Hama 69087009 is a fast automatic charger for NiMH rechargeable batteries. It features a completely automatic -AV charger shutoff that ensures that each pair of batteries is individually charged to the optimal level, thus preventing overcharging. The charger has two charging slots, allowing you to charge 2 or 4 AA/mignon or AAA/micro rechargeable batteries simultaneously. It also features a turbo switch that allows you to charge 2 AA batteries in the middle charging slots with a higher charging current, reducing the charging time.