21700 Lithium Battery 3.7V 3000MAH 30C High Power for EV E-Car
Feature for 21700 Lithium Battery 3.7V 3000MAH 30C High Power for
EV E-Car
- new model 21700 similar with Tesla ,
- high capacity 3000mah and high power support 30c discharge current
- 21700 / 20700 size
- circle life : 500 times
- The performance similar with Panasonic NCR21700A 5000mAh 15A high
drain battery
- Good price to support for your company only provides asssembly and
formation equipment.
Specification for 21700 Lithium Battery 3.7V 3000MAH 30C High Power
for EV E-Car
| No. | Items | Specifications | Remark |
| 1 | Nominal Capacity | 3000mAh | 0.5C Standard discharge
|
| 2 | Minimum Capacity | 2800mAh |
| 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 | 600mA | Standard charge, charge time about 7h(Ref)
|
| 0.5C | 1500mA | Rapid Charge, charge time about: 3.5h(Ref)
|
| 8 | Standard discharging method
| 0.5C constant current discharge to3.0V, | |
| 9 | Cell Internal Impedance
| ≤35mΩ | Internal resistance measured at AC 1KHZ after 50% charge
|
Similar Model
Rated Capacity at 0.5C(Min.)
After standard charge, the capacity shall be
measured on 0.5C discharge till the voltage,discharge to2.75V, the
capacity is ≥2800mAh
Cycle Life:
Charging and discharging battery as blew
conditions 0.5C standard charge to 4.2V end-off1C standard
discharge to 2.75V cut-off Continuous charge and discharge for
500cycles ,the capacity will be measure after the 500th cycle
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 28 days with 0.2C at 20~25℃ as retention
capacityThe battery to be charge in accordance with standard charge
condition at 20~25℃,then storage battery at an ambient temperature
20~25℃ for 28 days.
Measure the capacity after 28 days with 0.2C at 20~25℃ as retention
capacity the Retention capacity
should be over 80%
Battery Photos
Packing
50pcs for one inner box , 6 box for one carton
Period of Warranty
The period of warranty is one year from the date of shipment. We
guarantees to give a ccin case of cells with defects proven due to
manufacturing process instead of the customer abuse and misuse.
Storage of the 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.
Other The Chemical Reaction
Because batteries utilize a chemical reaction, battery performance
will deteriorate over time even if stored for a long period of time
without being used. In addition, if the various usage conditions
such as charge, discharge, ambient temperature, etc. are not
maintained within the specified ranges the life expectancy of the
battery may be shortened or the device in which the battery is used
may be damaged by electrolyte leakage. If the batteries cannot
maintain a charge for long periods of time, even when they are
charged correctly, this may indicate it is time to change the
battery.
