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Wisdom NWB-25A smart charger for Wisdom KL series cap lamps

The recommended charger for the Wisdom KL8M and KL12M cap lamps, the NWB-25A is a fast intelligent charger specifically tailored to charge the Li-ion batteries of the KL series lamps.

Charging is through the headset, insert the keyway on the charger into the back of the headset and give a half-turn clockwise (ensuring a good connection) to start charging the lamp. Smart-charger uses constant-current up to 70% charge (charge indicator LED stays red), then switches to constant voltage charging until lamp is fully charged (charge indicator LED flashes green). (When the LED flashes from red to green, the battery is 90% charged and the lamp will work for at least 14 hours if charging is stopped at this point). The charger powers-off once charging is complete. This prevents over charging and allows the battery to be topped up at any time. When charging is complete, remove headset from charger by turning it anti-clockwise 180° and lifting it off the brass keyway.

The NWB-25A fast intelligent smart-charger is also compatible with the KL5M cap lamp, charging it in less time than the NWB-20 charger or the older NWB-15 charger. Charging time (for full recharge): 3 hours for KL5M lamp, 5-6 hours for KL8M and KL12M lamps.


3 in stock

Stock ID:  300005

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