Tenergy TN136 4 Bay 9V Smart Charger for Ni-MH Batteries Rapid chargingWorldwide voltage 100V ~ 240VACAutomatically detect-Delta VMicroprocessor controlled to ensure charger safetyLED indicator for each individual bayFeaturesApplicable for 9V rechargeable Ni-MH batteriesWorldwide voltage 100V ~ 240VACBuilt-in micro-controller to ensure full charge5hr safety timerCircuit / polarity protectionAutomatically detect - delta VLED indicator for each individual bayIndicator statusChargingRED, Fully chargedGREENUL approved AC adapterBattery Type Capacity Charging time 1~4pcs Ni-MH 9V 160mAh 1.6 hrs 180mAh 1.8 hrs 200mAh 2.0 hrs 220mAh 2.2 hrs SpecificationsOutlet input voltage12VCharge current100mAOperating Temp0 ~ 40??CWeight70gDownload product manual here.