The new Nitecore Li-Ion battery type 21700 NL2150 has a capacity of 5000mAh.
The battery is protected by a protective circuit against overvoltage, deep discharge and short circuits. The 21700 battery is now used more and more in powerful flashlights to extend the burn time.
The following chargers are suitable for charging: UI1, UI2, UM2, UM4, UMS2 and UMS4.
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