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BKD50 04/02/2018
The Klarus K1 charger is good value for the money. It is well built and will charge almost any battery that you own including NiMH and most Lithium ion batteries. The charger recognizes battery type automatically but you have to select the voltage for LiFePO4. There was no problem with inserting long 18650 batteries. The default is a 0.5 amp charging current that can be increased to 1 amp by pressing the select switch for a couple of seconds - not a good idea for AAAA NiMH! Since the charger is designed to accommodate the large 26650 batteries, you have to be careful to make sure that smaller diameter batteries are centred in the slot, particularly with button tops. The charger has a protection circuit for reverse polarity and short circuit and shuts off to prevent overcharging. Although I did not test, it it is supposed to reactivate Li Ion batteries whose protection circuit has been tripped.The display is somewhat confusing and when I inserted an almost charged NiMH battery all four blue lights activated with the 3.7V light flashing - it looked like it was confused as to the type of battery. Apparently, the type of battery is only shown momentarily when you insert it, then the display shows the state of charge by flashing one to four blue lights. The display would be better designed if one light showed the battery type and another display showed the charging state. Charge termination seemed slightly early for Li-ion batteries compared to my higher-end chargers - not a bad thing to preserve battery life.
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BKD50 04/02/2018
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