Tired of a charger that just gives you blinking lights. Here at Fuma, the H4 charger is the only chargers we use. Being able to monitor you batteries is crucial for battery safety, but you can't monitor or check on your batteries without a proper display screen. This is why our 18650 chargers have an lcd screen. Know what percent your battery currently is at, how long it's been charging, it's voltage and mah. This charger can also detect reverse polarity so you can have peace of mind even if you put your batteries in backwards (we've all done it).
Buy an H4 charger today. You won't regret it.
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