... batteries" because they are usually damaged by heat from classical chargers: alkaline and saline batteries.RC998 is an intelligent charger incorporating ... -Rechargeable) ,(NI-MH,NI-CDRechargeable),(AA,AAA,9V,1.5V Battery types)220VAC VDE OR 110VAC UL PLUG ,250VAC UK PLUG ... and reduce waste. You can even charge or regenerate mixed battery types and sizes at the same time!