Best 26650 battery 3.6V 5.5Ah

As a best 26650 battery, the 26650 3.6V 5.5Ah lithium battery is a rechargeable battery designed for various electric devices starting from small flashlights to golf cart ,RV ,solver system,etc. This best 26650 battery is made of high-grade lithium-ion cells, which provide high energy density and long cycle life.The battery has a nominal voltage of 3.6V and a capacity of 5.5Ah. It has high capacity, high voltage, low resistance without any memory effect. Moreover, The  26650 3.6V 5.5Ah lithium battery is environmentally friendly and does not contain any harmful substances. The 26650 3.6V 5.5Ah lithium battery is the best option for its low self-discharge rate, long cycle life and a large capacity.
In conclusion, the 26650 3.6V 5.5Ah lithium battery is a high-quality, reliable, and efficient power source for your electric devices.


Model name 3.2V-3Ah 3.6V-5Ah 3.6V-5.5Ah
Typical Capacity 3000mAh 5000mAh 5500mAh
Minimum Capacity 2970mAh 4900mAh 5450mAh
Operation Voltage 2.0-3.65V 2..75-4.2V 2.75-4.2V
Cell AC Impedance(1KH) ≤10mΩ ≤20mΩ ≤20mΩ
Shipment Capacity 50% SOC
(About 1500mAh)
About 60%SOC
About 60%SOC
Charging status
Charge Operating Temperature 0-45
(Environment temperature)
Discharge Operating Temperature -20~60
(Environment temperature)
(Environment temperature)
(Cell surface temperature)
Cell Weight(g) About 85g About 95g About 94g
Cell Dimension(mm) 65.3±0.3 * 26.3±0.2 65.2±0.3 * 26.7±0.2 65.2±0.3 * 26.7±0.2
Standard Charge Current 3000mA 2500mA 2750mA
Standard Charge Voltage 3.65V max for Unit Cells 4.2V max for Unit Cells 4.2V max for Unit Cell
Standard Charge Model Cell is charged with constant current of 1C to 3.65 V, and the it is convertedto 3.65V constant voltage charging until the charging current is less than0.02C(60mA) Cell is charged with constant current of 0.5C to 4.2 V, and the it is converted to 4.2Vconstant voltage charging until the charging current is less than 0.01C (55mA)
Charge Temperature 25±2 25±2 25±2
Charging Cut-off ProtectiveTemperature 0~60 0~55 0~45
Charging Protective Voltage 4.00V max. 4.25V max. 4.2V max.
Standard Discharge Current 3000mA 5000mA 5500mA
Max.Discharge Current(Continuous 30000mA 10000mA 11000mA
Max.Discharge Current (LongPulse) 45000mA 15000mA 16500mA
Max. Discharge Current(ShortPulse) 60000mA 25000mA 27500mA
Discharge Cut-off Voltage 2.0V Min. for unit Cell 2.75V Min. for unit Cell 2.75V Min. for unit Cell
Standard DischargeTemperature 25±2 25±2 25±2
Discharge Cut-off ProtectiveTemperature -20~75 -20~70 -20~60
Temperature Increasing during
Continuous Discharge
≤5 ≤5 ≤5
Temperature Increasing during
High Rate Discharge
≤30 ≤10 ≤10

Best 26650 battery buying guide

The 26650 battery is a cylindrical lithium battery, which has a wide range of applications due to its own advantages. There are not only differences in size between 26650 batteries and 18650 batteries. This article will take you to understand the characteristics, advantages and disadvantages, and the attention points of 26650 battery, and also compare the differences between 26650 batteries and 18650 batteries, to show you the necessary knowledge bout 26650 battery to make a proper selection for your specific requirements.

What is the meant by a 26650 battery?

26650 battery is a kind of cylindrical battery. It provides high capacity with high performance. 26650 batteries are suitable for delivering power to high-drain equipment. Moreover, it is also used as flashlight battery. The large ampere-hour (mAh) rating of a 26650 battery typically allows for a long operating period between charges.

What are the different types of 26650 batteries


There are 2 types of 26650 batteries as below:
– LiFePO4 26650 battery
– LiNiCoMnO2 26650 batteries

Specifications of 26650 battery

Users need to consider battery usage scenarios when choosing a 26650 battery. Its chemistry varies according to the requirements but mostly Li-ion is featured as its chemistry. Here are some specification parameters of 26650 battery:

Weight 85~95.5 g
Length About 65~68.2 mm
Diameter About 26.5~26.9 mm
Normal Capacity 3000~5500mAh
Normal Voltage 2.0~4.2V
Maximum Discharge Current 3~11A
Estimated Charge Cycles 2000-6000 cycles
Energy 9.6-19.8Wh

The advantages of 26650 battery

After comparison with the other batteries of equivalent grade, the advantages of the 26650 battery are listed below.


High Capacity and low resistance

When compared to other batteries such as AAA battery, AA battery and 18650 battery, the 26650 battery has a larger capacity. The 26650 battery’s resistance, which is less than 60m, is also extremely low, which considerably reduces the battery’s self-consumption. Both the length of life and the amount of time spent working are improved.

No memory effect

The 26650 battery has a long life cycle, great safety capability, and doesn’t suffer from any memory effect.

Easy to make battery packs

It is easy to make 26650 lithium packs to improve efficiency.

High Voltage

The voltage of 26650 lithium batteries is 3.2V-3.7V. It means that it has higher voltage than hydrogen batteries or nickel-chromium batteries.


It is entirely environment friendly as it creates zero pollution.

The drawbacks of the 26650 battery

After its performance comparison with other batteries of the same shape. The drawbacks of the 26650 battery are listed below:


High cost

The cost of a 26650 battery is one of the main cons of it. They typically cost about 40% more to produce than nickel-cadmium cells. This is a crucial consideration when taking into account they are being used in mass-produced goods when any added costs are a serious concern.

Developing technology

Although the 26650 battery has been used a lot, some people may notice it is still in the beginnings of the technology. Since technology is constantly changing, this could be a drawback. However, the constant development of new lithium-ion technology can also be a benefit as better options become available.

The application of 26650 battery


There are many applications using 26650 battery.  Due to its high voltage and efficiency, it is used in high power demand devices. Moreover, these batteries can be assembled into battery packs for different electrical equipment, such as backup power, home energy storage systems, and so on.

What is the maximum capacity of a 26650 battery?

26650 battery has a maximum capacity of 5,200 mA/h (5.2 A/h), making them perfect for high-drain applications that need peak bursts of power.

How 18650 batteries are different from 26650 batteries? The best one is?

There are many differences between these batteries. A 18650 battery and a 26650 battery differ in the following ways.


Size and diameter

26650 lithium battery is larger than a 18650 battery. Therefore it requires more space. And the diameter of the 26650 battery is 26 mm, however the diameter of the 18650 battery is 18mm.


Usually the 26650 lithium-ion battery has a capacity greater than the 18650 battery. The capacity of 26650 is 3000mAh and the capacity of the 18650 battery is from 1200 to 2200 mAh.


The applicable scenarios of the two are similar, but since 18650 is the most common and earliest developed lithium-ion cylindrical battery cell, the application rate of 18650 products is higher, and the level of industry standardization is also higher. There are many devices that are designed to work with 18650 batteries. Therefore, in actual product applications, the application range of 18650 batteries is wider. However, on the other hand, 26650 generally has a higher capacity than 18650, and is more suitable for devices with large capacity requirements.
18650 batteries vs 26650 batteries, the more efficient one is 26650 battery. As it adopts the latest technology and is larger in size than the 18650 battery. Moreover, the battery life and resistance is longer compared to 18650 batteries.

What should we consider while purchasing a 26650 battery?


The factors that we should consider while purchasing a 26650 battery (as well as other batteries) are:
– Battery voltage
– Charging and draining current
– Cycle life
– Power density
– State of charge
– Power rating
– Round-trip effectiveness, etc.

How to increase 26650 battery Life

There are multiple measures which we can follow to increase the 26650 battery life.

Avoid overheating

Do not overheat them. Intense temperatures are the primary cause of the 26650 battery draining and a lower battery life span. Generally, it is best to work at a room temperature of 20-25℃, and it should not exceed 60℃.

Avoid over-discharging

Be careful not to overcharge. Do not charge to 100% every time you charge it. It is best to keep the power of the lithium ion battery between 20-80%. Otherwise the metal inside of different battery sections will begin to plate as the voltage drops below 2.0V, which finally generates an internal voltage drop.


26650 battery is the best option for a low self-discharge rate, good charging and discharging cycle and a large capacity. The most important aspects of 26650 rechargeable batteries are their chemistry, wide application and sustained drain current. Rechargeable 26650 batteries are very similar to 18650 batteries, with the exception that the former have a volume that is roughly two times greater, resulting in a higher capacity power dissipation.


Q1. Can I have a sample order?
A. Yes, we welcome sample order to test and check quality.

Q2. What about the lead time?
A. Sample needs 5-10 days, mass production time needs 3-5 weeks, it depends on order quantity.

Q3. Do you have any MOQ limit?
A. Yes, we have MOQ for mass production, it depends on the different part numbers. 1~10pcs sample order is available. Low MOQ, 1pc for sample checking is available.

Q4. How do you ship the goods and how long does it take to arrive?
A. We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping is also optional.

Q5. How to proceed with an order?
A. Firstly let us know your requirements or application. Secondly, We quote according to your requirements or our suggestions.Thirdly customer confirms the samples and places a deposit for formal order. Fourthly We arrange the production.

Q6. Is it OK to print my logo on the product?
A. Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q7. How about cycles life and warranty of your battery?
All of batteries are 2000 cycles life beyond 80% DOD. with 2 years warranty.


Company Profile

lithium ion battery manufacturing SGS
lithium ion battery manufacturing SGS
lithium ion battery factory SGS
lithium ion battery factory SGS


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Overall introduction to lithium battery manufacturing process

This article provides an overall introduction to lithium battery manufacturing process in details, including the whole process of batching, coating, sheeting, preparation, winding, shelling, rolling, baking, liquid injection, welding, and what to notice in each step.

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