Universal 3.7V 4.2V adapter for charging li-ion battery.Charging current:0.6A,0 ... .8A,1A,1.2A,2A optional.Output voltage:4.2V+-1% Product Name: Universal ... 4.2V adapter for charging 3.7V li-ion battery Product Feature:- Input ... over-volatge protection, output short-circuit protection, reverse-battery protection- Hi-pot test: AC3000V, less than 0 ...