| Customization: | Available |
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| Type: | Li-ion Battery |
| Cathode Material: | NCM |
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Hot Sale Lithium Battery 21700 3.7 V 5000mAh 4500mAh 4000mAh for EV Golf Cart | Norminal Voltage | 3.7V | |
| Norminal Capacity | 3000mAh~5000mAh | |
| Internal Resistance | ≤10mΩ | |
| Size | 21.5*70mm | |
| Weight | 68g | |
| Cut-off Discharge Voltage | 2.75V | |
| Standard Charge | Charge Voltage | 4.2V±0.03V |
| Charge Current | 0.2C | |
| Max Charge Current | 1C | |
| Standard Discharge | Continuous Discharge Current | 0.2C |
| Max Discharge Current | 1~3C | |
| Working Temperature | Charge | 0∼45°C,60±25%RH |
| Discharge | -20∼60°C,60±25%RH | |
| Charging Method | CC-CV | |
| Certificate | CE,UL,ROHS,UN38.3,IEC62133, BIS, etc. | |
Features:
Rechargeable Lithium Ion(Li-ion) cells have a negative electrode(anode) made from lithium compounds.Lithium is a highly reactive material and is much lighter than the hydrogen-absorbing metal alloy of the NiMH negative electrode.This leads to higher gravimetric energy densities for the Li-ion cell. Cells can stay in storage for 12 months without requiring maintenance.The expected cycle life of a Li-ion in an application is about >1000 cycles.
Advantages:
1.Higher voltage,high capacity
2.Higher specific energy
3.Long cycle life about 1000+
4.Safety,no memory effect
5.Lower self-discharge,<3%/monthly
6.Fast charging,good discharge performance at high/low temperature
7.Clean and Green energy, no toxic material contained.
8.Can stay storage for 12 months without requiring maintenance.
A: Yes, we welcome sample order to test and check quality.
A: Samples in 5~10 days, 25-30 days for the bulk order.
A: Low MOQ, 1pc for sample checking is available.
A: For sample order, we usually ship by TNT, UPS etc., which usually takes 3~5 days to arrive. For the bulk order, Air and sea shipping are both optional.
A: Firstly let us know your technical requirements and application. Secondly we quote accordingly. Thirdly customer confirms the samples and places deposit for formal order. Fourthly we arrange the production.
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
A: Yes, we offer a one-year warranty to the Li-ion battery products.
A: Firstly, our batteries are produced in strict quality control system and the defective rate will be less than 0.2%.
Secondly, during the guarantee period, we will send new batteries with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.
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