ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
Brand Name:TAC OEM & ODM
Certification:MSDS REACH ROHS
Model Number:21700 400mah 3.7v
Minimum Order Quantity:500 pcs for single cell , 50pack for battery packs
Delivery Time:7-10 days after order confirm for stock model
Payment Terms:30% advance for battery Pack
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Location:
Guangzhou China
Address:
No.27 BOWANG Street ,Nan Cun Town, Panyu, Guangzhou, GD,China
Supplier`s last login times:
within 30 hours
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21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH
Specification for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH
| No. | Items | Specifications | Remark | |
| 1 | Nominal Capacity | 4000mAh-5000mAH | 0.5C Standard discharge | |
| 2 | Minimum Capacity | 3800mAh-4800mAh | ||
| 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 | |
Cell Electrical Performance
| 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 | ≥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. | Retention capacity | |
Application for 21700 Lithium Battery For Electrical Vehicle 3.7V 4000MAH
- EV / E-CAR / E-SCOOTER /E-Bike
- Energy storage system// Portable ESS
- power tool /
- Solar production
- 21700 cells with cap in electric bikes.
Package For Bulk
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.
Period of Warranty
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 suggestion for Storage of the Lithium-ion Batteries
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.
Similar Model for Lithium ion Cylindrical Battery
| 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-5000MAH | 3.7V |
Battery Photo for Similar Model ( Bulk cell)
Lithium-ion Battery Pack Made By ICR21700 4000MAH 3.7V
Normally 21700 Cell positive is flat type , but we can support both
of flat type and top type
Flat Type
TOP Type
ROHS 21700 Lithium Ion Cylindrical Battery For Electrical Vehicle 3.7V 4000MAH
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