21700 Lifepo4 Battery Cell 5000mah 3.6V For Flashlight Laptopu
Lithim Lifepo4 Battery21700 3.6V 5000mah Flashlight Laptopu
Zhuokai 21700 lithium battery
describe
The 21700 is a high energy density battery with long run time and stable power.
The 21700 battery was the original power behind the Tesla S series from high-tech electric car manufacturer Tesla. Its high performance and safety features allow it to be used under severe conditions.
Custom 21700 battery packs are available upon request.
*** 21700 Battery Care Tips ***
- Never fully discharge a Li-Ion battery (less than 2.5V load).
- Fully charge to 4.2V before first use.
- Never forcefully install (insert) the Li-ion battery.
- Do not use old and new batteries at the same time.
- Use only a top-notch battery charger.
- Do not expose to warm environment. Try not to short (connect) the positive (top) and negative (bottom) battery terminals (contacts).
| Parameter | ||
| Item | Specification | |
| 3.1 Typical Capacity , | 5000 mAh Charge: 1000 mA (0.2C), 4.20V, CCCV 100 mA cut-off, Discharge: 1000 mA (0.2C),2.50 V DC cut-off. | |
| 3.2 Min. Capacity | 4900 mAh Charge: 1000 mA (0.2C), 4.20 V, CCCV 100 mA cut-off, Discharge: 1000 mA (0.2C), 2.50 V DC cut-off. | |
| 3.3 Typical Votage | 3.65 V . 二 | |
| 3.4 Standard Charge | cccv, 1000 mA(0.2 C), 4.20 v, 100 mA cutoff | |
| 3.5 Rate Charge 上 | cccV, 2500 mA (0.5 C),4.15 V, 100 mA cut-off | |
| 3.6 Max. Continuous Charge | CCCV, 5000 mA(1 C), 4.10 V, 100 mA cut-off | |
| 3.7 Standard Discharge | DC, 1000 mA (0.2 C), 2.50V cut-off | |
| 3.8 Max. Continuous Discharge | DC, 15000 mA (3 C),2.50 V cut-off | |
| 3.9 Standard Charge/Discharge Voltage Range | 4.20~2.50V | |
| 3.10 Cell Weight | 69.0士2.0g | |
| 3.11 Cell Dimension 三 | Height: 70.15士0.15 mm Diameter: 21.15土0.10 mm | |
| 3.12 Operation Temperature (Cell Surface Temperature, cut-off temperature 70*C) | Charge: 0 to 15.C | y s0.2C(1000mA) |
| Charge: 15 to 45 *C | s 1.0C (5000mA) | |
| "Executive standard: GB31241. (Note: The above data comes from Yiwei Lab) | ||
FQA:
1.Is the 21700 battery bigger than the 18650?
While the 21700 cell is about 10% more dense than the 18650 cell, its energy density is about 33% higher. However, the added thickness means that 20700 and 21700 cells dissipate heat a little slower than 18650 cells
2.What is the maximum capacity of the 21700 battery?
The maximum capacity of the 21700 battery can reach 5000mAh.
3.Is LiFePO4 better than Li-ion?
Is LiFePO4 better than Li-ion? LiFePO4 batteries are superior to Li-ion batteries in terms of cycle life (duration 4-5 times longer) and safety. This is a key advantage because Li-ion batteries can overheat and even catch fire, while LiFePO4 cannot.
4.What is the lifespan of lithium iron phosphate?
long lasting
LiFePO4 batteries last for over 2000 cycles with an average discharge rate of 100%. This can even go up to 8500 cycles if the battery is discharged to 30%! Therefore, LiFePO4 batteries are true cyclic power sources that continue where other batteries left off.
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