If you need a lot of capacity and an acceptable discharge current, then this 21700 battery from Keeppower is just right.
Developed for the field of LED’s, electromobility.
Best suited for demanding e-cig. Vaporizers and LED Users
Scope of delivery: 1 piece Keeppower 21700-E650 – 6500mAh, 3,6V-3,7V Li-ion battery High Drain
Other features:
Lithium-ion batteries are thermally stable and are not subject to memory effect.
They work on the basis of lithium and are characterised by a high energy density.
Safety advice:
Lithium cells may only be operated with protective electronics!
Please note that lithium cells may only be used by qualified personnel.
Incorrect handling or short-circuiting can lead to fire or explosion.
Technical Data
| Cell | Keeppower |
| Capacity | 6500mAh |
| Min. capacity | 6400mAh |
| Nominal voltage | 3,7V |
| Charging end voltage | 4,20V |
| Final discharge voltage | 2,50V |
| Positive pole | flat (Flat Top) |
| Max. Discharge current (continuous load) | 13A |
| Chemistry | LiMnCo02 |
| Protective circuit PCB | not available |
| Charging method | CC-CV |
| Diameter | 21.80mm ± 0.15 |
| Height | 71,30mm ± 0,15 |
| Weight | 75g ± 1 |
| Test results | follows |
| Charging current Normal | 1200mA |
| Charging time at 1550mA | 5,0h |
| Fast charge current | 3000mA |
| Charging time at 2500mA | 2,5h |
| Operating temperature charging | 0 – 45°C |
| Operating temperature discharging | -20 – 60°C |
Notes:
For charging Lithium Ion batteries a special charger is required, which charges the batteries according to a special charging procedure. (CCCV = constand current, constant voltage.) The batteries must not be charged above a voltage of 4.2 volts, otherwise there is a risk of fire and explosion. It is advantageous to charge the batteries only up to approx. 4.1 volts, as this significantly increases the service life or the number of charging cycles (possibly up to double). Only lithium ion chargers may be used for charging. However, the cheap chargers sometimes have the disadvantage that they do not switch off safely at the end of the charging process, but continue to charge the batteries with a small charging current, which can be dangerous.
Furthermore, rechargeable batteries and batteries do not belong in household waste! Please dispose of them as prescribed by law at the municipal collection points or in the [usually green] containers provided by retailers.
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