Lectron Pro 11.1V 3500mAh 30C Lipo Battery with EC3 Connector for Blade 350 QX, QX2, QX3 & Parkzone Planes Lectron Pro batteries feature a high-end performance and reliability at an affordable price! Battery Voltage: 11.1V | Capacity: 3500mAh | Maximum Continuous Discharge Rate: 30C | Maximum Charge Rate: 2C (7 Amps) Battery Dimensions: 100mm x 34mm x 28mm / 3.94in x 1.34in x 1.1in | Weight: 210g Works great with Parkzone T-28 Trojan, F-27Q Stryker, Extra 300, Spitfire, and F4U-A1 Corsair (Always check the voltage, dimensions, and battery connector to ensure this battery will be a good fit for your vehicle/application) We're confident in quality of our batteries! All Lectron Pro batteries are covered by a 1 Year Warranty against any manufacturing defects and U.S. based support in case you run into any issues!