General Electrical Properties of 26650 Lithium Battery

Introduction General electrical performance of 26650 lithium battery Cycle performance: 2000 times (1C charge/1C discharge, capacity retention rate ≥80%, 100% DOD) maximum continuous discharge

General Electrical Properties of 26650 Lithium Battery

Cycle performance: 2000 times (1C charge/1C discharge, capacity retention rate ≥80%, 100% DOD) Maximum continuous discharge current: 9.6A Pulse discharge current: 15 A, 5s

Operating temperature: Charging: 0°C ~ 55°C; Discharge: -20°C ~ 60°C

Storage temperature: -20°C ~ 45°C

Battery weight: 86g (approximately)

The rated voltage of a single nickel-cobalt-manganese ternary lithium ion cell 26650 is generally: 3.6V

Rated capacity: 4500mAh (capacity range 4500 -4650mAh)

AC internal resistance: ≤30mΩ (plus PTC type)

Charging conditions: cut-off voltage 4.2±0.05V, cut-off current 0.01C. (Notes: Charge at 4.2V at a constant current of 0.5C, charge at a constant voltage until the current drops to 0.01C)

Discharge cut-off voltage : 2.75V

Cycle performance: 500 times (1C charge/1C discharge, capacity retention rate ≥70%, 100%DOD)

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Maximum continuous discharge current: 13A

Pulse discharge current: 15A, 5s

Operating temperature: Charge: 0°C ~ 55°C ; Discharge: -20°C ~ 60°C

Storage temperature: -20°C ~ 45°C

Battery weight: 92g (approx.)

Diameter: 26.2 mm

Height: 65.6 mm

What is the performance of lithium iron phosphate battery and lithium battery better ?

The key performance of lithium batteries is high current capacity, but the mAH marked on lithium battery is low current capacity, which will decrease less at high current. Generally, a good battery will be less than 10% to 20%, and a bad battery will be less than 50%. Lithium-ion polymer batteries would be only 5% less efficient. It is difficult to test the performance of the purchased battery. If you must test it, use it after fully charging it. The phone batteryrtable continues to speak, the camera continues to flash. Recharge after exhausting the battery, at least 10 times. After 10 times, compare it with a good battery. If you think the usage time is okay, you should be fine. However, this testing method is not very accurate.

Then there is a leakage current, which corresponds to the automatic discharge of the battery. It's hard to check when it's fully charged, usually need to discharge it, just use it until it's out of power. Lithium batteries are generally 3-3.5V. Then leave it for a while, usually a day, and the voltage will increase a little. If left for a while, the tension will drop a little. At this time, the voltage drop is not very obvious and the battery is of good quality.

In fact, this cannot be generalized. It depends on the specific applicationof your battery needs in the above locations or devices. If it's a small device that uses electricity, lithium batteries will be better! If it is a backup for significant power consumption, lithium iron phosphate batteries would be better.

In terms of performance: If it comes to special low temperature batteries, lithium polymer batteries are better than lithium iron phosphate batteries if used at room temperature , polymers with high current discharge capacity; Lithium batteries are better than lithium iron batteries, but in terms of safety performance, lithium iron batteries are safer than lithium batteries. At the same time, the high temperature performance of iron-lithium batteries is better.

Note:

The lithium iron phosphate battery is a batteryie lithium-ion which uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. The rated voltage of the single cell is 3.2V. and the charging cut-off voltage is 3.6V~3.65V.

During the charging process, some lithium ions contained in lithium iron phosphate are released, transferred to the negative electrode through the electrolyte, and embedded in the carbon material of the negative electrode at the same time, electrons are released; The positive electrode and reaches the negative electrode of the external circuit to maintain the balance of the chemical reaction. During the discharge process, lithium ions are released from the negative electrode and reach the positive electrode via the electrolyte. At the same time, the negative electrode releases electrons and reaches the positive electrode of the external circuit to provide energy to the outside world.

Lithium iron ph batteriesosphate have the advantages of high operating voltage, high energy density, long service life, good safety performance, low self-discharge rate and no memory effect .

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