Tech Center: Punching the Numbers

I know that battery capacity determines how long my car will run on a charge, but does it affect power too? My car feels more powerful on a 5000mAh 2-cell pack than a 3000mAh 2-cell pack.

Yep, that’s a real thing. Even though the 3000mAh battery and 5000mAh battery have the same resting voltage, that voltage will drop under load—like when you stomp on the throttle, for instance.  e greater the capacity of a battery, the less its voltage will drop under load.  at’s why your 5000mAh pack makes your car feel stronger off the line, and may potentially make it a little faster at top speed too, depending on gearing. You won’t notice this effect with all models; it’s more apparent when you have a low-turn / high KV motor, tall gearing, or a heavy vehicle—or all three.

To get maximum performance from a high-powered brushless model such as this HPI Savage Flux, choose high-capacity packs.

Increasing battery capacity can increase your car’s performance as well as its run time.