Specification for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH
| No. | Items | Specifications |
Remark |
|
| 1 |
Nominal Capacity |
4000mAh |
0.5C Standard discharge
|
|
| 2 |
Minimum Capacity |
3800mAh | ||
| 3 |
Nominal Voltage |
3.7V |
Mean Operation Voltage
|
|
| 4 |
Delivery voltage |
3.70~3.9V |
Within 10 days from Factory
|
|
| 5 |
Charge Voltage
|
4.2V±0.03V |
By standard charge method
|
|
| 6 |
Standard charging method
|
0.5C constant current,4.2V constant voltage charge to 4.2V,continue charging till current decline to ≤0.01C |
|
|
| 7 |
Charge current |
0.2C | 400mA |
Standard charge, charge time about 7h(Ref)
|
| 0.5C | 2000mA |
Rapid Charge, charge time about: 3.5h(Ref)
|
||
| 8 |
Standard discharging method
|
0.5C constant current discharge to3.0V, | ||
| 9 |
Cell Internal Impedance
|
≤50mΩ |
Internal resistance measured at AC 1KHZ after 50% charge
|
|
| No | Items | Test Method and Condition/ |
Criteria | |
| 1 |
Rated Capacity at 0.2C(Min.)
|
After standard charge, the capacity shall be measured on 0.2C discharge till the voltage discharge to3.0V,
|
≥3800mAh | ≥100% |
|
Rated Capacity at 0.5C(Min.)
|
After standard charge, the capacity shall be measured on 0.5C discharge till the voltage discharge to 3.0V,
|
≥3686mAh | ≥98% | |
|
Rated Capacity at 1C(Min.)
|
After standard charge, the capacity shall be measured on 1C discharge till the voltage discharge to 3.0V,
|
≥3534mAh | ≥96% | |
| 2 |
Cycle Life
|
Charging and discharging battery as blew conditions 0.2C standard charge to 4.2V end-off 0.2C standard discharge to 3.0V cut-off Continuous charge and discharge for 300 cycles ,the capacity will be measure after the200th cycle
|
≥80% of initial capacity | |
| 3 |
Capacity retention
|
The battery to be charge in accordance with standard charge condition at 20~25℃,then storage the battery at an ambient temperature 20~25℃ for 28 days. Measure the capacity after 30 days with 0.2C at 20~25℃ as retention capacity
|
Retention capacity
≥85% |
|
Application for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH
Electric tool battery
Electric vehicles battery
Consumer lithium battery:
Energy storage battery:
20-50 pcs each box and 4 box pcs in one standard export carton
Tac Also support display box and specially color carton for OEM ODM order
Delivery Time Information
7-10 days for bulk cell base on industry pack , this is normal model , we prepare the stock continue
25-30 days for battery pack after the customer confirm the detail accessories for examples PCB Connector etc.
The period of warranty is one year from the date of shipment. We guarantees to give a case of cells with defects proven due to manufacturing process instead of the customer abuse and misuse.
The batteries should be stored at room temperature, charged to about 30% to 50% of capacity.
We recommend that batteries be charged about once per half a year to prevent over discharge.
| MODEL | CAPACITY | VOLATGE |
| ICR10440 | 250-400MAH | 3.7V |
| ICR14500 | 450-600MAH | 3.7V |
| ICR17335 | 750-900MAH | 3.7V |
| ICR18490 | 1100-1500MAH | 3.7V |
| ICR18500 | 1500-1800MAH | 3.7V |
| ICR18650 | 2000-2800MAH | 3.7V |
| ICR26650 | 3000-3300MAH | 3.7V |
| ICR20700 | 3500MAH | 3.7V |
| ICR21700 | 4000MAH |
3.7V |
Lithium-ion Battery Pack Made By ICR21700 4000MAH 3.7V
Sunland Power, established in 2011, is a leading company specializing in high-performance lithium-ion batteries, battery modules, and advanced battery packs. We are dedicated to providing cutting-edge energy storage and power solutions for various industries worldwide. Our commitment to clean energy applications ensures that our products deliver high efficiency, reliability, and sustainability.
FAQ
1. Who are we?
Sunland Power, established in 2011, specializes in high-performance lithium-ion batteries, modules, and battery packs. We serve various industries by providing energy storage and power solutions.
2. How can we guarantee quality?
We have obtained ISO9001/14000, SA8000 certifications, and our products meet UL, CE, IEC, PSE, KC, BIS, JIS C8714, and other international standards. Our automated and smart manufacturing system ensures traceable and high-quality products.
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We offer a wide range of lithium-ion batteries, battery modules, and advanced battery packs, suitable for energy storage, electric vehicles, and other power applications.
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5. What services can we provide?
We offer customized battery solutions, technical support, after-sales service, and full clean energy application solutions.
Contact us now to get the latest quote and the best battery solutions for your business!
