Due to higher voltage (7.4V) & higher Max current drawn (40A) supply, The RC device will run faster.
Need longer burn-time? Please utilize pack with higher mAh rate
Burn-time = (Pack's Wh rate) / Device's Wattage
Please double check if the size would match up with your RC device
Note: Please make sure you order the pack with correct connector type. Furthermore, We also offer the 7.2v 1400 mAh with mini female connector for Firebired XL.