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1 Years
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| Brand Name : | TINKO/OEM |
| Model Number : | 2245146 |
| Certification : | CE/ROHS/MSDS/UN38.3 |
| Price : | Negotiable |
| Supply Ability : | 100pcs/day |
Rechargeable LFP2265146 3.2V 21ah Lifepo4 Battery Cell for Electric
Bicycle and Scooter
Product Description
Lithium iron phosphate (LiFePO4) batteries, also known as LFP batteries, are a type of lithium-ion battery that have gained popularity in recent years due to their numerous advantages over traditional lead-acid batteries.
The main advantages of LiFePO4 batteries is their high energy density. This means that they can store a large amount of energy in a relatively small package, making them ideal for applications where space is limited. They also have a longer lifespan than traditional lead-acid batteries, with some manufacturers claiming lifetimes of up to 20 years. This is because LiFePO4 batteries do not suffer from the same issues of degradation and capacity loss as lead-acid batteries, which can lose up to 20% of their capacity per year.
Product Parameters
Item | Specification | Condition/Notes |
Nominal Capacity | 21Ah | |
Nominal Voltage | 3.2V | |
Charge/Discharge Voltage Range | 2.0V～3.65V | T>0℃ |
| 1.8 V～3.65V | Forbid continuous charging | |
Weight | 430g±5g | |
Weight energy density | ≥ 158Wh/kg | 0.33C |
Volume energy density | ≥ 320Wh/L | 0.33C |
ACR | 3.2mΩ<R≤4mΩ | 25℃±2℃ Fresh cell(17%±3%SOC) |
DCR | ≤7mΩ | 50%SOC, 25±2℃ |
Recommended Charge Specification
Item | Specification | Condition/Notes |
Regular Charge(Slow charge) | 8A 3.65V 1.15A 10℃≤T<45℃ | Constant current Constant voltage Cut off condition (terminating) Temperature |
Step Charge | See appendix A.1 | Fast charging strategy at different temperature |
Appendix A.1
Step | Temperature | ＜0℃ | 0℃≤T ＜5℃ | 5℃≤T< 15℃ | 15℃≤T ＜25℃ | 25℃≤T ＜45℃ | 45℃ ≤T< 50℃ | 50℃≤ T< 55℃ |
1 | Charge current(C) | 不允许充电 | 0.20 | 0.50 | 1.00 | 1.00 | 0.50 | 0.33 |
Jumping voltage (V) | / | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | |
2 | Charge current(C) | / | / | 0.30 | 0.50 | 0.5 | 0.30 | / |
Jumping voltage (V) | / | / | 3.50 | 3.50 | 3.50 | 3.50 | / | |
3 | Charge current(C) | / | / | 0.20 | 0.20 | 0.2 | 0.20 | 0.20 |
Jumping voltage (V) | / | / | 3.65 | 3.65 | 3.65 | 3.65 | 3.65 | |
4 | Charge current(C) | / | 0.10 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| End off Voltage (V) | / | 3.65 | 3.65 | 3.65 | 3.65 | 3.65 | 3.65 |
Working Temperature Range
Item | Condition/Notes | Specification |
Optimum working Temperature | 10～35℃ | |
Charge temperature range | -0～55℃ | |
Discharge temperature range | The highest cell temperature≤60℃ | -30～60℃ |
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