8 Bay 8-Slot Battery Charger, LUMSING Multi-slots AA, AAA, Ni-MH, Ni-CD Rechargeable Battery Charger Can both charge AA and AAA Ni-MH Ni-Cd rechargeable batteries, (Can't be used to charge alkaline or Lithium batteries) 2/4/6/8 AA or AAA batteries together at a time, need to charge batteries every two ones, do not charge uneven amount of batteries 4 LEDs show the status of charging, never charge 1 AA + 1 AAA together at 2 slots which are controlled by 1 LED Over-heat, over-current, short-circuit, & reverse polarity protection, (mechanically) ensures that charger and batteries will not be damaged when users insert batteries with reversed polarity. DC adaptor with wide AC input voltage 100-240V, designed for wordwide usage. 30 days money back, 12 months free replacement warranty and 24 hours friendly customer service