HOOVO is a professional Lipo battery brand, which is focus on research, development and production of Li-Polymer batteries for over decades. We are committed to provide the most professional and safest batteries for every consumer. Feature: - Light weight, long cycle life, no "memory-effect". - High power battery, high capacity provide your rc model more energy, more enjoyment. - High Discharge rate and steady discharge curve make your rc vehicle work powerfully. Specification: Brand: HOOVO Cell Number: 4S Voltage(V): 14.8V Capacity(mAh): 5200mAh Discharge Rate (C): 120C Charge Plug Type: JST-XH Configuration: 4S1P Battery Dimension(±2mm): 138*47*48.5mm / 5.47*1.85*1.91inch(L*W*H) Approx Weight: 484g / 17.07oz Package Content: 2 X HOOVO 4S Lipo Battery 14.8V 5200mAh 120C Hard Case with TR Plug. Notice: - For the RC battery, only if the voltage and the plug match, then it will fit. - Don't over charge exceed 4.2V and don't over discharge below 3.2V. - Check the battery condition carefully before using or charging. - If the new battery won’t hold a full charge or loss the charge very quickly in short time, please use Balance Charger to charge and recycle several times first. - For any questions, pls feel free to contact us through "Your Orders" tab of your Amazon account, we will respond within 24 hours.