Calculator category

Battery & Power

Estimate solar battery charging time from panel watts, peak sun hours, battery capacity, charge range, real-world losses, daytime…

Estimate 12V battery runtime from Ah capacity, charge range, battery condition, DC load, efficiency and optional lead-acid Peukert…

Estimate inverter battery backup time from battery Ah, bank voltage, charge range, inverter losses and running load.

Estimate how long a power bank can operate a phone, tablet, laptop or other connected load using usable…

Estimate how long a power bank takes to recharge using battery energy, charger output, input limits, efficiency and…

Estimate how many times a power bank can charge a phone, tablet or laptop using battery energy, efficiency…

Calculate battery C-rate, current, ideal time, nominal power and parallel-string current.

Estimate the battery-bank Ah and energy required for an inverter load and target backup time.

Calculate battery-bank voltage, Ah, Wh, usable energy and total batteries for series, parallel or series-parallel wiring.

Estimate battery charging time using capacity, charger amps, state of charge, efficiency and the battery bank arrangement.

Estimate UPS or inverter battery backup time using battery voltage, Ah capacity, connected load, usable depth and efficiency.