Common Sense RC (3 Pack) Lectron Pro 3.7V 300mAh 35C Lipo Battery with MCPX Connector for Blade Nano QX 3D and mCP X
Do the math: your stock lipo is 200mAh and our lipo is 300mAh. That's 50% more runtime than the stock replacement, and our lipo fits perfectly in the heli and the stock charger. No modifications necessary!