Camera
Camera Battery Runtime Calculator
Estimate runtime from battery capacity and rig draw.
Runs entirely in your browser. Nothing is uploaded.
How to use
- Enter the battery capacity in watt-hours.
- Add each device on the rig with its draw in watts.
- Set how much of the battery you are willing to use, then read the estimated runtime.
Examples
- A 98Wh battery running a 26W rig lasts roughly three hours at 80 percent usable capacity.
- Adding a monitor and a wireless transmitter raises the draw and visibly shortens the runtime.
- Limiting use to 80 percent protects the cells and gives a realistic on-set figure rather than a best case.
Frequently asked questions
Why use watt-hours?
Watt-hours describe the real energy a battery holds regardless of voltage, so dividing by the rig draw in watts gives a clean runtime in hours.
Why not use the full battery?
Running a lithium pack flat shortens its life and risks cutting out mid-take. Planning to about 80 percent leaves a safe margin.
Why is my real runtime shorter?
Cold weather, high-draw peaks when recording or powering motors, and ageing cells all reduce capacity, so always carry spares.
