Four batteries can be charged at the same time; the Q4 has a recorded 1A output when four batteries are being charged, and 2A output when two batteries are being charged.
There are multiple safety protections built into the Q4 Charger including reverse polarity protection, short circuit protection and automatic deactivation upon charging completion. All of which help protect the Q4 charger and your batteries.
The user manual included with the Q4 fully lists compatible battery types, we recommend you always check before using batteries with a charger. Never leave batteries unattended while charging, when the Nitecore charger is not in use we advise that it should be unplugged and stored safely.
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