lithium-ion battery is a standard lithium-ion battery model, where 18 indicates a diameter of 18mm, 65 indicates a length of 65mm, and 0 indicates a cylindrical battery.

You will get efficient and thoughtful service from Godson Tech.

It has the advantages of light weight, large capacity, and no memory effect, so it has been widely used. The energy density of lithium-ion batteries is very high, its capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and it has a very low self-discharge rate. In addition, lithium-ion batteries have almost no "memory effect" and do not contain toxic substances, which are also important reasons for their widespread use.

Main application areas of lithium battery

1. Energy storage

Mainly used in base station power supply, clean energy energy storage, grid power energy storage, home optical storage system, etc.

2. Power type Mainly refers to electric transportation, electric bicycles, new energy vehicles, etc.

3. Digital Mobile phones, tablets, laptops, electric toys, MP3/MP4, headphones, power banks, model aircraft, mobile power supplies, etc.

lithium battery model parameters

1. General physical parameters of lithium battery Type - sealed cylindrical type, rechargeable lithium-ion battery

Model——ICR

Nominal voltage - 3.6V

Weight - about 45g

CamAh——mAh

Charging voltage——4.200±0.049V

Minimum discharge termination voltage——2.75V

Maximum charge termination voltage——4.23V

Maximum continuous charging current——mA

Maximum continuous discharge current——mA

Dimensions (including heat shrink jacket) Diameter: d——18.0±0.2mm

Height: h-65.0±0.5mm

Minimum capacity——mAh

Maximum capacity——mAh

Internal resistance (20℃±5℃, measured after fully charged) - less than 80mQ

Charging conditions: 20℃±5℃)

Standard charging mA to 4.2V, 4.2V constant voltage to current less than 20mA

Fast Charging – mA to 4.2V, 4.2V constant voltage to less than 20mA

Usage environment (recommended)

Storage - Temperature (15-35℃)

Relative humidity (45-75%)

Atmospheric pressure (86-106kPa)

Discharge 20 to 60℃

Standard charging 0 to 45℃

Relative humidity <93% Atmospheric pressure 86 to 106kPa Standard test environment (unless otherwise required) Temperature 20℃±5℃ Relative humidity 45±20%

2. lithium-ion battery conventional chemical performance parameters (electrical performance) requirements

(1) Appearance structure, visual inspection shows no cracks, scratches, deformation, stains, or electrolyte leakage.

(2) Standard test strip: If there are no special requirements, the test should be conducted under the conditions of 20±5℃ (temperature) and 65±20% (humidity). The accuracy level of the ammeter and voltmeter used in the test is ≤0.5

(3) Standard charging It means that under the environment of 20±5℃ and 65±5%RH, after charging with a current of 0.5ItmA to a single cell voltage of 4.2V, it is switched to a constant voltage of 4.2V for charging until the charging current is less than 20mA, then the charging is stopped.

(4) Quick charging It refers to charging at a constant current of mA to a single cell voltage of 4.2V in an environment of 20±5℃ and 65±5%RH, then switching to constant voltage 4.2V for charging until the charging current is less than 20mA, then stopping charging.

(5) Rated capacity It refers to the discharge capacity when the battery is discharged to the end voltage of 2.75V at a constant current of 0.5mA before charging under the environment of 20±5℃ and 65±5%H; left for 15 minutes after standard charging; and discharged to 2.75V at 0.2ItmA. Required discharge capacity: ≥100%C5mAh.

(6) Rapid discharge capacity It refers to the discharge capacity when the battery is discharged to the end voltage of 2.75V at a constant current of 0.5ImA before charging under the environment of 20±5℃ and 65±5%H; left for 15 minutes after standard charging; and discharged to 2.75V at 0.2ImA. Required discharge capacity: ≥90%C5mAh

(7) Cycle life Discharge the battery according to standard discharge requirements and leave it aside for 15 minutes. In the environment of 20±5℃ and 65±5%RH, charge according to the fast charging requirements and leave it for 15 minutes, then discharge with a current of mA until the battery terminal voltage reaches the termination voltage of 2.75V. Cyclic charge and discharge, when the discharge capacity of any cycle is less than 80% CsmAh, the life is terminated. The number of cycles must be greater than or equal to 300

(8) -20℃ discharge performance The battery should be charged according to the standard charging method; the battery should be left at an ambient temperature of -20℃±2℃ for 16h~24h; the battery should be discharged at a constant current of 0.2ImA to a termination voltage of 2.75V at an ambient temperature of -20℃±2℃ ;Discharge capacity ≥60%C5mAh

2. Performance parameters of lithium-ion battery separator

The factors that affect the performance of the lithium-ion battery separator are: thickness, air permeability, wettability, chemical stability, pore size, puncture strength, thermal shutdown temperature, and porosity. These factors directly affect the quality of lithium-ion battery products. Let’s take a look at the performance parameter requirements of these lithium-ion battery separators.

1. Thickness Regarding consumable lithium-ion batteries (those used in mobile phones, laptops, and digital cameras), 25-micron separators are gradually becoming the standard. However, due to the increasing use of portable products, thinner diaphragms, such as 20 micron, 18 micron, 16 micron, or even thinner diaphragms, have begun to be widely used. For power lithium batteries, due to the mechanical requirements of the assembly process, thicker separators are often required. Of course, for large power batteries, safety is also very important, and thicker separators often mean better safety. EV/HEV uses a separator with a thickness of about 40 microns.

2. Air permeability MacMullin number: The ratio between the resistivity of the separator containing the electrolyte and the resistivity of the electrolyte itself. The smaller the value, the better. The value for the consumable lithium-ion battery is close to 8. Gurley number: The time required for a certain volume of gas to pass through a certain area of diaphragm under certain pressure conditions. It is proportional to the internal resistance of the battery assembled with the separator, that is, the larger the value, the greater the internal resistance. It is meaningless to simply compare the Gurley number of two different diaphragms, because the microstructure of the two diaphragms may be completely different; but the Gurley number of the same kind of diaphragm can well reflect the size of the internal resistance, because the same kind of diaphragm The microstructure is relatively the same or comparable.

3. Wetness In order to ensure that the internal resistance of the battery is not too large, the separator is required to be completely wetted by the electrolyte used in the battery. This is related to the separator material itself and the surface and internal microstructure of the separator. Rough judgment: Take a typical electrolyte (such as EC:DMC=1:1, 1MLiPF) and drop it on the surface of the separator to see if the droplets will quickly disappear and be absorbed by the separator. Accurate judgment: Use an ultra-high time resolution camera to record the process from the droplet contacting the separator to the droplet disappearing, calculate the time, and compare the wettability of the two separators based on the length of time.

Are you interested in learning more about Lithium Battery ICR mAh 3.7V|Lithium Battery for Electric Devices? Contact us today to secure an expert consultation!

4. Chemical stability of lithium-ion battery separator The separator is required to be inert in electrochemical reactions, inactive to strong reduction and strong oxidation, and have no attenuation in mechanical strength and no impurities. It is generally believed that the current diaphragm materials PE or PP can meet the chemical inertness requirements.

5. Pore size of lithium-ion battery separator To prevent electrode particles from passing directly through the separator, the separator pore size is required to be 0.01-0.1um. When it is less than 0.01um, the lithium ion penetration ability is too small. When it is greater than 0.1um, the battery is prone to short circuit when dendrites are formed inside the battery. The electrode particles currently used are generally on the order of 10 microns, while the conductive additives used are on the order of 10 nanometers. Fortunately, carbon black particles generally tend to agglomerate to form large particles. Generally speaking, a separator with submicron pores is enough to prevent the direct passage of electrode particles. Of course, it does not rule out that some electrodes have poor surface treatment and excessive dust, such as micro short circuits.

6. Puncture strength of lithium-ion battery separator Puncture strength: At a certain speed (3-5 meters per minute), a needle with a diameter of 1 mm without sharp edges is allowed to pierce the annularly fixed diaphragm, which is the maximum force exerted on the needle to penetrate the diaphragm. Since the method used during testing is very different from the actual situation in the battery, it is not particularly reasonable to directly compare the puncture strength of the two separators. However, when the microstructure is certain, the assembly with higher puncture strength is relatively better. The defective rate is low. However, the pure pursuit of high puncture strength will inevitably lead to a decrease in other properties of the diaphragm.

7. Thermal stability The separator must remain thermally stable within the temperature range of battery use (-20°C ~ 60°C). Generally speaking, the PE or PP materials currently used for diaphragms can meet the above requirements. Generally, under vacuum conditions and at a constant temperature of 90°C for 60 minutes, the transverse and longitudinal shrinkage of the diaphragm should be less than 5%.

8. Thermal shutdown temperature of lithium-ion battery separator Thermal shutdown temperature: The temperature at which the internal resistance increases by three orders of magnitude when a simulated battery (a separator sandwiched between two planar electrodes, using a general lithium-ion battery electrolyte) is heated. Closing temperature: the temperature at which the micropores of the diaphragm are blocked by the heat generated when an external short circuit or abnormal large current passes through. Melt rupture temperature: The temperature at which the diaphragm ruptures when the temperature exceeds the melting point of the sample.

lithium battery voltage and parameters, what is the capacity?

The voltage and capacity of lithium battery are the most important performance parameters of this type of battery, and are also the fundamental factors that determine the price of lithium batteries. Manufacturers can design lithium batteries with different capacities, which is determined by raw materials and processes.

lithium battery parameter table

lithium battery is a typical battery named according to its size. Therefore, the size as one of the parameters of lithium battery is basically the same. Because lithium batteries can actually be divided into four systems: lithium cobalt oxide, lithium manganate, ternary materials, and lithium iron phosphate due to different positive electrodes. Except for lithium iron phosphate, the other three materials can essentially replace each other.

lithium battery voltage is one of the important parameters of lithium battery. Mastering the basic knowledge of battery voltage plays an important role in scientific battery charging, discharging and shelving protection. lithium cobalt oxide battery The nominal voltage is generally: 3.7V The charging limit voltage is generally: 4.20V The minimum discharge termination voltage is generally: 2.75V Diameter: 18±0.2mm Height: 65±2.0mm Capacity: mAh or more (the highest currently is Panasonic’s mah) Currently, the world's largest manufacturers of this type of lithium batteries include Japan's Sanyo (acquired by Panasonic), Panasonic, Samsung, and Sony. lithium iron phosphate battery The nominal voltage of a single cell is generally: 3.2V The charging limit voltage is generally: 3.6V The minimum discharge termination voltage is generally: 2V Diameter: 18±0.2mm Height: 65±2.0mm Capacity: smaller than of lithium cobalt oxide, the common one is mah. It can be seen that the sizes of the two are exactly the same, but the lithium batteries of the two systems have their own advantages and disadvantages. Specifically, the advantages of lithium iron phosphate batteries and lithium cobalt oxide are: 1. Safer. Overcharge and overdischarge will not cause explosion or leakage. 2. Longer life, can be cycled more than 1,000 times under normal use 3. High magnification, 2C charging and 10C discharging, it will not get hot, explode or leak, and will not affect its lifespan. However, the lithium iron phosphate battery has a low cell voltage and is mostly used in electrical appliances that operate with high current. The voltage parameters of a single lithium battery are as follows 1. The core of the lithium battery voltage is the working voltage, also called the nominal voltage, which is 3.7V, which is equivalent to three nickel-cadmium or nickel-metal hydride batteries connected in series. Some domestic battery manufacturers also design the working voltage to be 3.6V. 2. Charging limit voltage: This is the highest limit for the battery voltage, which is 4.2V. The charging process of the lithium battery is the process of increasing the battery voltage from 3.7V during operation to 4.2V. The end of the process indicates that the battery is full. power status. If it exceeds 4.2V, it is overcharged and will cause damage to the battery. 3. Discharge termination voltage: that is, when the voltage of the lithium battery drops to the lowest working voltage where it is not suitable to continue discharging, it is 2.75V. If the battery is placed below the termination voltage, it is over-discharged. Over-discharge will damage the electrode structure of the battery. Causes lithium ions to undergo an irreversible reaction, seriously affecting the life of the battery. What is the capacity of lithium battery? The capacity of lithium battery is of concern to many industrial users and individual consumers. This is because the larger the capacity of lithium battery, the longer it can be used and can provide users with longer power supply. However, under the same system, High capacity of lithium batteries will bring negative effects of high price, so the balance between capacity and price is very important. The capacity of lithium battery is distributed between mAh and mAh, but the more mature technology is generally between mAh and mAh. This is because the capacity of lithium battery is too low, which will affect the effective working time of the battery and there are problems in applicability. . If the capacity of lithium battery is too high, the cost will increase greatly. Moreover, the lithium battery with too high capacity in non-special fields is not of great significance. The capacity of lithium battery is the main selling point of the manufacturer. In addition, the brand of lithium battery cells with the same capacity is also a factor that affects the price. Generally speaking, imported brands are more expensive than domestic brands of the same type. As mentioned earlier, the decision of lithium battery The main factor in capacity is also the structure of the raw materials. Therefore, from the perspective of the positive electrode, the prices of lithium cobalt oxide, lithium manganate, ternary materials, and lithium iron phosphate will be different. lithium battery packs need to be customized according to different products used in different working environments and fields. When selecting lithium battery packs, you should consider the consistency, stability, and safety of the cells, as well as the content of each set of cells. Every battery must be matched in all aspects, such as the same voltage, the same internal resistance, the same capacity, etc.

Ultimate Guide to 3.6V-3.7V Lithium Batteries

Time: -03-31

Key Highlights

• Voltage Basics: 3.6V–3.7V is the average discharge voltage; 0.1V difference is just labeling.
• Powerful & Versatile: High energy density and stability for phones, EVs, and drones.
• There are seven types: ICR, INR, IFR, etc., each with unique strengths (e.g., ICR, IFR).
• Easy Selection: Pick NCA for energy, LIP for shape, ER for longevity—match your needs.
• 3.6V vs. 3.7V: Nearly identical; devices don’t mind the 0.1V gap.
• Broad Uses: From wearables to solar, they power modern life.

Introduction

In today’s world, we use many portable electronics. Lithium batteries are very important for them. The 3.6V lithium-ion battery is one of the best. In this article, we will explore the type of 3.6v lithium battery, their benefits, applications and how to choose the right lithium battery for your project.

Why is the voltage of lithium-ion batteries around 3.6 to 3.7v?

1. Electrode Materials and Potential Difference

Lithium batteries have a positive (cathode) and negative (anode) part. The voltage comes from the difference between them. Materials like lithium cobalt oxide (positive part) create around 3.9–4.0 volts, while graphite (negative part) makes about 0.1–0.2 volts in lithium batteries. This voltage difference determines the cell’s total voltage, usually around 3.6–3.7 volts when discharged fully.

2. Practical and Safe Design

Lithium-ion batteries shuttle lithium ions between the cathode and anode through an electrolyte.

The 3.7-volt range is a sweet spot for graphite-based anodes and transition-metal-oxide cathodes, balancing energy density, stability, and safety. Higher voltages can provide more power but may compromise safety, while lower voltages might not meet the power requirements of modern electronics. The 3.6V to 3.7V range strikes a balance that makes lithium-ion batteries versatile and efficient for various applications.

In short, the 3.6–3.7 volts come from the inherent properties of the materials used and the physics of how lithium ions move in the battery, optimized for performance, safety, and longevity. Different chemistries (like lithium iron phosphate, LiFePO₄, at ~3.2 volts) can shift this voltage, but 3.7 volts is the norm for many common lithium-ion cells.

Key Characteristics and Benefits of 3.6V Lithium Battery

3.6V lithium batteries have several important features. They have high energy density, long life, and strong voltage stability. These batteries are easy to maintain and work well for a long time, making them perfect for many industrial applications. Their small and light design fits the needs of modern devices. They provide steady energy for laptops, flashlights, and other electronics with a nominal voltage of 3.6V.

• Nominal Voltage:
  • Typically 3.6–3.7 volts, are determined by the electrochemical potential difference between the cathode (e.g., lithium cobalt oxide) and anode (e.g., graphite).
• High Energy Density:
  • Stores a significant amount of energy per unit of weight or volume (typically 150–250 Wh/kg), far exceeding older technologies like NiMH or lead-acid batteries.
• Rechargeable:
  • Based on lithium-ion intercalation chemistry, allowing hundreds to thousands of charge-discharge cycles (often 500– cycles depending on usage and quality).
• Low Self-Discharge Rate:
  • Loses only about 1.5–2% of its monthly charge when idle, compared to 20–30% for NiMH batteries.
• Lightweight:
  • Lithium’s low atomic weight and the battery’s efficient design make it much lighter than alternatives with similar capacity.
• Wide Operating Temperature Range:
  • It effectively functions between -20°C and 60°C, though optimal performance is typically at room temperature (20–25°C).
• No Memory Effect:
  • Unlike older nickel-based batteries, lithium-ion cells don’t lose capacity if partially discharged before recharging.
• Variable Capacity:
  • Available in various capacities (e.g., mAh to mAh or more), depending on size and design (e.g., cells, pouch cells).

Overview of Common Applications.

3.6V lithium batteries are found in many devices. You can see them in consumer electronics, medical devices, and power tools. People often use these rechargeable batteries in laptops, flashlights, and digital cameras. They are popular because they have high energy density and last a long time. These batteries also work well for wireless devices, remote controls, and electric toys. In the industry, they support essential tasks such as automation systems and backup power. This shows they are both valuable and dependable.

Why 3.6V Lithium Batteries Excel in These Applications

• High Voltage: A single 3.6V cell provides more power than lower-voltage alternatives (e.g., 1.2V NiMH), reducing the need for multiple cells.
• Energy Density: Enables compact designs without sacrificing runtime.
• Rechargeability: Supports repeated use and is critical for portable and cost-sensitive applications.
• Versatility: It is available in various sizes (e.g., cylindrical , , , , etc.) to fit diverse needs.

From tiny wearables to massive EV packs, the 3.6V lithium-ion battery’s balance of power, efficiency, and adaptability makes it a cornerstone of modern technology.

Types of 3.6V Lithium Batteries

The 3.6V lithium battery category encompasses seven types, distinguished by their specific chemistries, form factors, and performance characteristics. Each type of lithium battery has its pros and cons and is best for different purposes. Knowing these differences can help you choose the right battery for your device.

Below is an overview of the seven types of 3.6V lithium batteries:

1. LiCoO₂ or LCO Battery – Abbreviation: ICR

• Nominal Voltage: 3.6–3.7V
• Hot Sell Models: ICR
• Characteristics:
  • High energy density (~150–200 Wh/kg).
  • Compact and lightweight.
  • Moderate cycle life (500– cycles).
• Common Uses:
  • Smartphones, laptops, and other consumer electronics
• Pros:
  • Excellent energy storage for small devices.
• Cons:
  • Limited thermal stability; prone to overheating if overcharged.
  • Cobalt is expensive and ethically controversial.

2. LiMn₂O₄ or LMO Battery – Abbreviation: IMR

• Nominal Voltage: 3.6–3.7V
• Hot Sell Models: IMR, IMR
• Characteristics:
  • Good power output and thermal stability.
  • Energy density (~100–150 Wh/kg) is lower than LCO.
  • Decent cycle life (300–700 cycles).
• Common Uses:
  • Power tools, medical devices, and some electric vehicles.
• Pros
  • Lower cost than cobalt-based batteries.
  • Safer than ICR due to better thermal stability.
• Cons
  • Reduced capacity and shorter lifespan compared to other chemistries.

3. LiNiMnCoO₂ or NMC Battery – Abbreviation: INR

• Nominal Voltage: 3.6–3.7V
• Hot Sell Models: INR, INR
• Characteristics:
  • Balanced energy density (~150–220 Wh/kg).
  • High power capability and long cycle life (– cycles).
• Common Uses:
  • Electric vehicles, e-bikes, laptops, and energy storage systems.
• Pros
  • Versatile performance with good safety and longevity.
• Cons
  • More complex and costly to manufacture than single-metal chemistries.

4. LiNiCoAlO₂ or NCA Battery – Abbreviation: INR (shared with NMC in some cases)

• Nominal Voltage: 3.6–3.7V
• Hot Sell Models: INR, INR (often branded specifically by manufacturers like Tesla)
• Features
  • Very high energy density (~200–260 Wh/kg).
  • Excellent specific power for demanding applications.
  • Cycle life (~– cycles).
• Common Uses
  • Electric vehicles (e.g., Tesla models), high-performance drones, and power tools.
• Pros
  • Maximizes energy storage and power output.
• Cons
  • Less thermally stable than INR (NMC) or IMR; requires careful management.
  • Higher cost due to nickel and cobalt content.

5. Lithium Iron Phosphate (LiFePO₄ or LFP) Battery – Abbreviation: IFR

• Nominal Voltage: ~3.2V (slightly below 3.6V, but often grouped with 3.6V batteries)
• Hot Sell Models: IFR, IFR
• Features
  • Lower energy density (~90–160 Wh/kg).
  • Exceptional cycle life (– cycles).
  • Superior thermal and chemical stability.
  • Solar storage, e-bikes, backup power, and some EVs.
• Pros
  • Extremely safe and long-lasting.
  • Cost-effective over time due to durability.
  • Lower voltage (3.2V) and energy density limit its use in compact, high-energy devices.

6. Lithium Polymer (LiPo) Battery – Abbreviation: LIP

• Nominal Voltage: 3.6–3.7V
• Hot Sell Models: LIP (5mm x 37mm x 59mm, pouch format; sizes vary widely)
• Features:
  • High energy density (~150–250 Wh/kg, similar to ICR).
  • Flexible, lightweight pouch design with a solid or gel polymer electrolyte instead of liquid.
  • Good cycle life (300– cycles, depending on usage).
• Common Uses
  • Drones, RC vehicles, smartphones, wearables, and thin laptops.
• Pros:
  • Customizable shapes and sizes for compact or irregular devices.
  • Lightweight with no rigid casing, maximizing energy-to-weight ratio.
• Cons:
  • Less durable than cylindrical cells; prone to swelling or damage if mishandled.
  • Requires careful charging to avoid overvoltage or puncture risks.

7. Lithium Thionyl Chloride (LiSOCl₂) Battery – Abbreviation: ER

• Nominal Voltage: 3.6V
• Hot Sell Models: ER (AA size), ER (D size)
•  Features
  • Very high energy density (~500–700 Wh/kg).
  • Non-rechargeable (primary battery) with an extremely low self-discharge rate (<1% per year).
  • Long shelf life (10–20 years) and wide temperature range (-55°C to 85°C).
• Common Uses:
  • Utility meters, remote sensors, military equipment, and medical implants (e.g., pacemakers).
• Pros
  • Exceptional longevity and reliability for low-power, long-term applications.
  • Performs well in extreme environments.
• Cons:
  • Non-rechargeable, limiting it to single-use scenarios.
  • High initial cost and not suited for high-drain devices.

Choose the Right Type of Lithium Battery

Selecting the perfect 3.6V–3.7V lithium battery from the seven options—ICR, IMR, INR, NCA, IFR, LIP, and ER—can feel a bit overwhelming, but don’t worry! I’m here to break it down for you.

By considering your specific application, performance requirements, safety, cost, and longevity, I’ll provide tailored suggestions to help you confidently choose the best battery for your needs.

Step 1: Define Your Application and Requirements

Consider the following questions:

• Is it rechargeable or single-use? Most are rechargeable (ICR, IMR, INR, NCA, IFR, LIP), but ER is non-rechargeable.
• What’s the power demand? High-drain (e.g., power tools) vs. low-drain (e.g., sensors).
• How much space do you have? Compact devices need a pouch (LIP) or small cylindrical cells (e.g., ).
• What’s the environment? Extreme temperatures or safety-critical uses narrow your options.
• How long should it last? Cycle life (rechargeable) or shelf life (non-rechargeable) matters.

Step 2: Evaluate Key Factors

Here’s how each battery type aligns with specific needs:

1. Energy Density (Capacity per Size/Weight)

• Best Choices
  • NCA (INR): ~200–260 Wh/kg – Ideal for EVs and drones needing maximum energy in minimal space.
  • LIP: ~150–250 Wh/kg – Great for slim, lightweight devices like phones or wearables.
  • ICR: ~150–200 Wh/kg – Good for compact electronics like laptops.
• Lower Energy Density
  • IFR: ~90–160 Wh/kg – Less energy but safer and longer-lasting.
  • IMR: ~100–150 Wh/kg – Prioritizes power over capacity.

2. Power Output (High Drain vs. Low Drain)

High-Drain Needs (e.g., power tools, vaping, drones):

• IMR: Excellent power delivery and thermal stability.
• INR (NMC or NCA): High power with decent energy density.
• LIP: High discharge rates for RC vehicles or drones.

Low-Drain Needs (e.g., sensors, meters):

• ER: Perfect for ultra-low power over decades.
• IFR: Stable for steady, moderate loads.

3. Cycle Life (Rechargeable Durability)

Longest Life:

• IFR: – cycles – Best for solar storage or e-bikes.
• INR (NMC): – cycles – Reliable for EVs and laptops.
• NCA: – cycles – Good for high-energy applications.

Moderate Life:

• ICR: 500– cycles – Sufficient for consumer electronics.
• LIP: 300– cycles – Varies with care and use.
• IMR: 300–700 cycles – Shorter due to power focus.

Non-Rechargeable:

• ER: Single-use, but lasts 10–20 years on shelf.

4. Safety and Thermal Stability

• Safest Options:
  • IFR: Exceptional stability, low risk of fire – Ideal for safety-critical uses (e.g., EVs, backups).
  • IMR: Good thermal stability for high-drain tasks.
  • INR (NMC): Balanced safety for versatile use.
• Less Safe (Need Management)
  • ICR: Prone to overheating if mishandled.
  • NCA: High energy but less stable than NMC or IFR.
  • LIP: Risk of swelling or fire if punctured or overcharged.
• Stable for Lower Power: 
  • ER: Very safe for long-term, low-drain use.

5. Form Factor and Size

• Compact/Flexible

  • LIP: Pouch format fits irregular shapes (e.g., wearables, drones).
• Standardized CYlindrical
  • ICR, IMR, INR, NCA, IFR: , , for easy assembly in packs (e.g., EVs, flashlights). 
• Small or Specific 
  • ER: AA (ER) or D (ER) sizes for meters or sensors.

6. Temperature Range

• Extreme Conditions
  • ER: -55°C to 85°C – Best for harsh environments (e.g., military, remote sensors).
  • IFR: -20°C to 60°C – Reliable in cold or hot climates.
• Standard Range
  • ICR, IMR, INR, NCA, LIP: -20°C to 60°C, but optimal at 20–25°C; performance drops at extremes.

Here is a summary table you can check quickly:

What is the Difference Between 3.6V and 3.7V Lithium Batteries?

When browsing lithium batteries, you might notice some are labeled as 3.6V while others are marked as 3.7V. This small 0.1V difference often sparks curiosity, but in reality, it’s not a significant distinction.

It’s Mostly a Labeling Preference

The difference between 3.6V and 3.7V lithium batteries is primarily a matter of manufacturer convention rather than a major variation in performance or chemistry. Both refer to the nominal voltage—the average voltage a battery delivers during its discharge cycle. A lithium-ion battery starts at around 4.2V when fully charged and drops to 2.5–3.0V when nearly depleted. The 3.6V or 3.7V figure is simply the midpoint of this range, and manufacturers choose one or the other based on their testing standards or marketing habits. For example:

• 3.6V: Often used in older standards or by some brands for consistency.
• 3.7V: More common in modern consumer batteries, like ICR cells, as it slightly better reflects the average discharge voltage.

No Real Impact on Performance

This 0.1V gap—about 2.7% of the nominal voltage—is negligible in practice. Whether a battery is labeled 3.6V or 3.7V, its key traits like capacity (mAh), power output, and lifespan depend far more on its chemistry (e.g., ICR, INR, LIP) and construction than this tiny voltage difference. For instance, a 3.7V ICR battery and a 3.6V ICR battery of the same size and quality will perform virtually identically.

Will Your Device Notice?

Most devices won’t care about the 0.1V difference. Electronics are designed to handle a range of voltages (typically 3.0V to 4.2V) thanks to built-in regulators or battery management systems (BMS). The device will adjust seamlessly whether you use a 3.6V or 3.7V lithium battery. This small variance might matter only in rare cases—like precision equipment without voltage regulation—but such scenarios are uncommon.

Conclusion

In conclusion, understanding 3.6V lithium batteries is crucial. This knowledge aids in selecting the best power source. You may like lithium-ion’s efficiency, lithium polymer’s flexibility, or lithium iron phosphate’s safety, so selecting the right battery type and model is vital. Compare their performance with other batteries for a wise decision. Also, consider common queries such as disposal and lifespan for responsible usage. If you require assistance with lithium batteries, consult Pkcell for pricing and samples that suit your business needs.

Why Choose Pkcell Lithium Battery

With over 20 years of experience powering industries worldwide, PKCELL’s commitment to quality, innovation, and customer satisfaction is built into every lithium battery we produce.

Backed by certifications like IEC, CE, and RoHS and trusted by major brands like Walmart, our lithium battery offers a reliable, long-lasting power solution you can depend on. Ready to experience the PKCELL difference? Contact us today to discuss your lithium battery needs and explore how we can create a customized power solution for you!

Frequently Asked Questions

How do I properly dispose of 3.6V lithium batteries?

Lithium batteries, such as the 3.6V type, must not be thrown in regular trash. You should reach out to your local recycling center or find battery recycling programs to get rid of them correctly. This practice is good for sustainability and helps protect the environment.

What’s the average lifespan of a 3.6V lithium battery?

The lifespan of rechargeable batteries, like 3.6V lithium batteries, is mainly measured in charge cycles. It usually falls between 300 and cycles, but this can vary depending on how they are used and charged. The energy density also matters. A higher mAh rating usually means the battery lasts longer.

Are there rechargeable options for 3.6V lithium batteries?

Yes, many 3.6V lithium batteries, especially lithium-ion ones, can be recharged. Brands like Tenergy make good rechargeable 3.6V batteries. This matters for sustainability and helps reduce waste.

Can I replace 3.6v Li-Ion batteries with 3.7v ones?

In most situations, yes. A small voltage difference is generally okay for devices that use 3.6V lithium-ion batteries. However, it’s a good idea to check if your device is compatible first. This can help you avoid issues later.

Best place to source new 3.6v half AA batteries?

Amazon is a good place to buy 3.6-volt half-AA batteries. They have a wide selection and good prices. You can also enjoy free shipping on many items. In addition to Amazon, you can find these batteries at electronics stores or special battery shops for your accessories.

How to Measure the State of Charge on a 3.6 V Lithium Battery?

The simplest way to know the State of Charge of a 3.6 V lithium battery from Xeno is to use a multimeter to check its voltage. You should look at the battery’s datasheet to find the voltage levels for various charge amounts.

For more LiFePO4 Rechargeable Prismatic Batteryinformation, please contact us. We will provide professional answers.