Common Sense RC (2 Pack) Lectron Pro 11.1V 3000mAh 30C Lipo Battery with EC3 Connector for the 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: 3000mAh | Maximum Continuous Discharge Rate: 30C | Maximum Charge Rate: 2C (6 Amps) Battery Dimensions: 102mm x 33mm x 28mm / 4in x 1.3in x 1.1in | Weight: 195g Works great with Blade 350 QX and 450 QX, QX2, QX3, and Parkzone T-28 Trojan, F-27Q Stryker, Extra 300, Spitfire, F4U-A1 Corsair, and other Parkzone Planes (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!