① This charger can charge 1-4pcs AA/AAA Ni-MH/Ni-Cd rechargeable batteries,LED displays. ② It can automatically transfer to tricle-charging, to ensure the batteries are fully charged. ③Built-in intelligent MCU control intelligent power-off function ④ The LED Indicator shows the charging status. ⑤ With over-charge and over-temperature protection. Note: Only 1.2V AA/AAA rechargeable batteries can be charged LED Indicator smart intelligent battery charger Fully compatible with AA/AAA Rechargeable Batteries *Quick charge *Full Automatic stop Quick charge LED Indicator Safety charge Environmental material Four-slot independent channel charging Single charge, double charge, mixed charge Universal AA/AAA battery charging Only NiMH NiCd rechargeable batteries can be charged,ordinary alkaline and carbon batteries cannot be charged. LED Indicator Smart charging The charging process is intuitive and clear,and you can underst and the charging situation throughout the process