Battery C-Rating Calculator
The C rating defines how fast a battery can safely discharge. Max burst current = capacity (Ah) × C rating. A pack that can't keep up with your motors sags under load, loses power, and degrades faster. Check your battery here.
Published C ratings are often 30–40% optimistic. This tool recommends at least 30% headroom above your build's peak draw.
Enter capacity, C rating, and select a build type to see results.