The MC4S charger from XTAR offers safe charging for a range of batteries (AA, AAA, 18650, 21700 (unprotected), 20700 (unprotected), 18650, 14500, 16340, 18350, 18490 & 18500, 26650, 10440, C). 

4 slots offer mixed charging types and shuts down once batteries are fully charged preserving their life. Highly efficient this charger protects against overcharging, short circuit and overload.