Features and Benefit High quality 14.8 V Li-Ion rechargeable battery pack Made of12 pcs 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 14.8V/4.8Ah Li-Ion battery pack by connecting two PCB ready battery modules in parallel . Built-in IC chip will prevent battery pack fromover charge and over discharge and prolongs battery life Perfect for building 14.8V battery pack for bike lighting, RC toy, robots,laptop and DVD external battery.Use Smart Universal Li-ion Battery Charger for proper charging. Technical Specifications Capacity6600mAhVoltage14.8V (Peak at 16.8V)Dimensions55mmx75mmx70mmWeight20ozMax. charge current2AmpsMax. discharge current5AmpsCut off voltage12VCautions CAUTIONwhen 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 suggestthat youuse 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 BatteryPlease don't make parallel connection with more thantwo modules to avoid uneven charge.