:High quality 11.1V 17.6Ah Li-Ion rechargeable battery pack. Light weight and higher energy density than any rechargeable batteries. Rechargeable with no memory effect. Longer storage life than NiMH battery. Built-in IC chip will prevent battery pack from over charge, over discharge, and prolongs battery life.Ideal for replacing 12V HID batteries (10 to 13W) and can be used for diving lights with capability to withstand longer run time. Perfect for RC toy, lighting, robots, and DVD external battery. Use the Smart Universal Li-ion Battery charger for proper charging.Technical Specifications:Capacity17.6AhVoltage11.1V (Peak at 12.6V)Dimensions110mm x 73mm x 38mmWeight2.444 lbsRecommended Charging Current2AMax. Discharge Current10.4AWarnings CAUTIONwhen working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled! User should have enough knowledge when charging,discharging, and assemble Li-Ion rechargeable batteries. We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries. We strongly suggest that youuse our smart Li-Ion battery charger to charge the battery pack. Never use conventional DC adapter to charge the battery module; we are NOT responsible for any damages caused by misuse of the Li-Ion Battery. Please don't make parallel connection with more than three modules to avoid uneven charge.