Best alternative when it comes to high current output applications. With 4000mAh capacity and up to max. 45A (Ampere) load capacity, the Keeppower battery is suitable for extreme applications such as e-cigarettes. Besides reinforced sheathing (heat shrink tubing), all important technical characteristics are legibly attached to each battery as required by law.
Designed for power tools such as impact wrenches, angle grinders, circular saws, etc.
Ideally suited for demanding e-cig. Steamers in the sub-ohm range or current-hungry high-end torches.
Scope of delivery:
1 piece Keeppower INR21700 – 4000mAh, 3.6V-3.7V Li-Ion battery High Drain. When ordered in pairs, the batteries are supplied with storage box.
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 | UH2140 |
| Capacity | 4000mAh |
| Min. capacity | 3900mAh |
| Nominal voltage | 3.6V – 3.7V |
| Charging end voltage | 4,20V |
| Final discharge voltage | 2,50V |
| Positive pole | flat (Flat Top) |
| Max. Discharge current (continuous load) | 35A |
| Max. Discharge current (pulse approx. 10sec.) | 45A |
| Protection electronics PCB/BMS | not available |
| Charging method | CC-CV |
| Diameter | 21,40mm ± 0,15 |
| Height | 70,30mm ± 0,15 |
| Weight | 69g ± 1 |
| Datasheet | datasheet_uh2140 |
| SDS | sds_uh2140 |
| Charging current (guide value) | 0.xx – 2000mA |
| Charging time at 2000mA | approx. 4h |
| Charging current fast | max. 4000mA |
| Charging time at 4000mA | approx. 3h |
| 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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