If you have any issue with our products,please contact us by email or ask the question on the product page.We will try our best to solve your problem!</br></br> 7.4V 3000mAh Lipo Batteries for MJX B3 Bugs Bug 6 Force1 F100 Contixo F17 RC Drone </br> This 7.4V 3000mAh Lipo battery is a replacement battery.</br> It will give more punch and robust performance due to its higher current output and power.</br> Direct replacement battery for MJX B3 Bugs Force1 F100 Contixo F17 RC Quadcopter, no modification is needed.</br> Work for MJX B2C B2W but there is no shell,it needs to be fixed.</br></br> Specification:</br> Voltage: 7.4V</br> Capacity: 3000mAh</br> Size:104mm*34mm*21mm / 4.06 x 1.34 x 0. 83 inch</br> Weight:123g/ 4.34oz(not including wires and package) </br></br> Retail package includes:</br> 1 x 7.4V 3000mAh LiPO rechargeable battery Direct replacement, no modification needed!</br></br> Compatible with this MJX models:</br> MJX B3 Bugs 3</br> Force1 F100</br> Contixo F17</br> MJX Bugs 6</br> MJX BUGS 2</br></br> Kindly Remind:</br> ENGPOW promise to give you best friendly customer service. Please feel free to contact us if you have any questions, wish you have a nice day!