Energy and renewables calculators
Running costs of appliances and plant, battery capacity in mAh, Ah and Wh, charge times and storage, worked with the formula beside the answer. Off-grid solar PV sizing and battery runtime sit with the electrical calculators.
4 calculators- Battery charge timeTime to charge a battery from any state of charge with a given charger, allowing for the chemistry's charge efficiency, with the charge rate in C.
- Electricity cost and energy useEnergy use and running cost of any appliance or load per hour, day, month and year, from its power, hours of use and the price per kWh.
- mAh to Wh battery capacityBattery capacity in mAh or Ah converted to energy in Wh at the nominal voltage, and back, with the airline carry-on limit it falls under.
- Solar panel calculator: how many panels do I need?Solar system size in kW and the number of panels to cover your yearly electricity use, from peak sun hours and losses, with roof area, output and cost.