Battery Online Calculator

All calculators with (deep) sleep phases and running time!

of-things calculator

geekstips calculator

A bit tricky to set the sleep time, it’s not in seconds / hours but “Number of wakeups per hour” and “Capacity is automatically derated by 15% to account for some self discharge”, in the other calculators you can specify it by yourselfe.


With changeable metrics (e.g. mA / uA or s / h). Switch to advanced mode to have sleep time und run time. Not the best usability:

See also Kleine und kleinste Ströme messen in case you are interested in a more expensive test setting with a Otti power and measurement device. Iit’s a bit more an Otti ad than an independent article but also interesting.