Features and Benefits * High quality 11.1 V Li-Ion rechargeable battery pack * Made of three 2200mAh cylindrical 18650 cells with PCB and poly switch for full protection * Light weight and higher energy density than any rechargeable battery * No memory effect and rechargeable * Longer storage life than NiMH battery * You can build 10.8V/4.4Ah or 6.6Ah Li-Ion battery pack by connecting two or three PCB ready battery module in parallel . * Built-in IC chip will prevent battery pack from over charge and over discharge and prolongs battery life * Ideal for replacing batteries for 12V HID (10 to 13W) and Diving Lights for long running time * Perfect for building 10.8V battery pack for RC toy, robots, and DVD external battery. * Recommend using our Smart Universal Li-ion Battery Charger and set the charging voltage properly. Technical Specifications Capacity 2200mAh Voltage 10.8V (Peak at 12.6V, avg. at 11.1V) Dimensions 70mm Length x 55mm width x 18 mm thickness Weight 5.3 oz Max. charge current 2A Max. discharge current 6.5A Cut off voltage Over-Charge Protection: 13V Over-DisCharge Protetion: 7.2V Cautions * CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled. * User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging and assembly before use. * We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries * Strongly suggest that you use our smart Li-Ion battery charger to recharge the battery pack * Never use conventional DC adapter to charge the battery module) We are NOT responsible for any damage that is caused by the misuse of the Li-Ion Battery * Please don't make parallel connection with more than three modules to avoid uneven charge.