Batteries and runtime
How long a design lasts on a given cell, and what the pack has to be to get there — including the sag and the derating that make the number on the label optimistic.
These calculators are in development. Below is what is being built for this category.
Coming next
- Battery life from capacity and average current draw
- Runtime for a duty-cycled load, from active current, sleep current and duty
- mAh to watt-hours and back, at a nominal cell voltage
- Pack configuration: cells in series and parallel for a target voltage and capacity
- Charge time and C-rate from capacity and charge current
- Voltage sag under a load step, from cell internal resistance
- Usable capacity against a cutoff voltage and a depth-of-discharge limit
- Peukert correction for lead-acid discharged faster than its rating