RC Battery Runtime Calculator
Estimate session runtime from pack capacity and average current draw. Add a reserve margin so you stop before the pack is overworked.
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Usable Runtime
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Theoretical Full Runtime
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Average Power Draw
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Capacity Needed for Goal
Runtime by Driving Load
| Current Draw | Usable Runtime | Average Power | Typical Use |
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Quick Presets
Use This Correctly
- Use average current draw, not peak current.
- Keep reserve in the pack instead of planning to run it flat.
- Cold weather, gearing, and terrain can reduce runtime fast.
- LiPo packs should usually stop around 15-20% remaining under practical use.