- Powerful 12.0 V 10000 mAh NiMH Battery pack long battery pack - Made with 10 x D 10000mAh TENERGY high capacity NiMH Batteries assembled- Delivers 8 - 9 hours of run time with typical emergence light (500mA discahrge current)- Good as a DC 12V power supply and storage battery- Perfect for walking robot -- two time running time than NiCd power pack - Quick charge, long life cycle (up to 500 times) and rapid charge up- You can use our 7.2V-12V smart charger to charger this battery pack.- You can use 3:1 Paralell connector adaptor to have a new pack with three times the capacity with the same voltage- You can use 3:1 Serial connector adaptor to ahve a new pack with three times the voltage with the same capacity - Weight3.35LB-Output12V -with 16AWG silicone wires- Dimensions12" x 2.5" x 1.25"Caution:- You may make 12V 20Ah NiMH pack by parallel connection of two this 12V NiMH battery modules , or make 24V and 36V 10Ah battery packs by series connection two or three modules. In such case, you must charge each 12V module individually before connecting them into larger pack. - Any change to the battery pack will void our warranty