BAK is not an unknown manufacturer. In the past, BAK has repeatedly brought cells onto the market that were equal to or even better than Samsung, Sony, Panasonic, etc. The BAK N21700CG-50 battery has a capacity of 5000mAh and a load capacity of 15A.
The N21700CG-50 from BAK is a perfect replacement for the Samsung, Murata (Sony), LG or Panasonic cells. Due to the shortage of batteries on the international market, cells like the N21700CG-50 will play a major role. For many battery pack manufacturers, the batteries from BAK, Lishen or DLG will make a decisive contribution and provide an equivalent replacement.
Innovative manufacturing processes in BAK factories enable competitive products at the best price-performance ratio. BAK is an internationally operating company. The branch office responsible for Europe has been located in Germany for several years. Through the innovation of its own factories, BAK can keep up with and in some cases surpass the top-class competition.
N21700CG-50 (Data sheet)
IEC (62133) IEC Certificate
Lithium cells may only be operated with protective electronics!
Please note that lithium cells may only be used by authorised specialist personnel.
Incorrect handling or short-circuiting may result in fire or explosion.
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.
1x BAK N21700CG-50 – 5000mAh, lithium-ion rechargeable battery.
Technical Data
| Capacity | 5000mAh |
| Minimum capacity | 4900mAh |
| Rated voltage | 3.6V – 3.7V |
| Charging end voltage | 4,2V ± 0,05 |
| Final discharge voltage | 2,5V |
| Max. discharge current (constant) | 3C 15A (15000mA) |
| max. discharge current (pulse) | approx. 20A – 25A |
| max. charging current | 1C 5A (5000mA) |
| recommended charging current | 0.5C 2.5A (2500mA) |
| Protection electronics BMS | none |
| Positive pole | flat (Flat Top) |
| Diameter | 21.3 mm ± 0.15 mm |
| Height | 70.50 mm ± 0.25 mm |
| Weight | 70g ± 1 g |
| Charging method | CC-CV |
| Charging current Normal | 0.xx – 2.5A |
| max. charging current (2) | up to max. 5A (temp. over.) |
| Operating temperature Charging | 0 °C – 60 °C |
| Operating temperature discharging | -40 °C – 60 °C |
Notes:
Charging lithium-ion batteries requires a special charger that charges the batteries according to a special charging procedure. (CCCV = constant 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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