- 12.0 V 4200 mAh NiMH Battery packlong battery pack made by 10X SC4200mAh NIMH batteries- Can deliver maximum 10C or 40A discharging current- Two separate charging and discharging terminals to protect battery from overcharging and power-off during charging- Good as a DC 12V power supply and storage battery- Pefect for walking robot -- two time running time than NiCd power pack - Quick charge, long cycle life and rapid charge up- You can use our 7.2V-12V smart charger to charger this battery pack. Technical Specifications- Battery TypeNIMH- Voltage; 12V- Maximum discharging current10C or 40A-Connectors:DischargeStandard TamiyaChargeMini Tamiya- DimensionsLength230mm, Width 22mm and Height 51mm- Weight690g- Good as a DC 12V power supply and storage battery- Pefect for walking robot -- two time running time than NiCd power pack - Quick charge, long cycle life (up to 500 times) and rapid charge up Caution:- Only use the Charging Mini Tamiya terminal for charging. Do not use the charging terminal for discharging.- You may make make 24V, 36V, 48V 4Ah battery packs by series connection two or three modules. In such case, you must charge each 12V moduleindividuallybefore connecting them into larger pack.- Any change to the battery pack will void our warranty