Specifications: Compatiable for:Wltoys 12401 12402 12403 12404,Specially designed manufactured for your high-quality RC devices. Battery volts：7.4V, Battery capacity: 1500mAh Charge Plug: JST-XH,Discharge Plug: T Connector Charging Time:About 150 mins,Fast charge and discharge rate for your requirements. Using time: 8-10 minutes,Easy to install and convenient to use. Size :2.76*1.38*0.59in / 7*3.5*1.5cm Weight：3.35oz / 95g Quantity: without battery charger, if you aren't absolutely satisfied, returned it within 30 days for a full refund. Note: Please turn off the power switch and unplug the battery connector after use 1. Never use or charge the battery that has ballooned or swelled, leaks, overheat or anything else abnormal occurs. 2. Do not discharge the batteries with the current exceed.