RV & Marine

Browse 5 rv & marine tools. Opening RV Solar & House Battery Calculator.

RV Solar & House Battery CalculatorMatch rooftop panel yield to daily 12V/24V loads and bank Ah shortfall.Use this to camp off-grid longer without draining your house battery.
Marine Trolling Motor Runtime CalculatorContinuous amp draw vs. bank Ah for trolling and house loads.Use this to know how long you can troll before the battery calls it a day.
Portable Power Station Recharge TimesCompare wall AC, car 12V, and solar MPPT hours to refill Wh capacity.Use this to pick the fastest way to refill your power station on the road.
12V to 120V Inverter Load PlannerCheck continuous and surge loads against inverter ratings.Use this to check which household devices your inverter can safely run.
12V Camping Fridge Runtime CalculatorAmbient temperature effect on compressor duty cycle and battery days.Use this to know how many days your fridge lasts off battery in hot weather.

RV Solar & House Battery Calculator

Inputs

Adjust values to update results live

Panel watts (W)

Peak sun hours (HRS)

Daily solar yield

Enter panels, sun & load

Yield Wh = panel W × sun h × efficiency%. Shortfall Ah = (load − yield) ÷ voltage when yield is low.

Q: 12 V vs 24 V? A: Higher voltage reduces amps for same watts—smaller cables.

Yield Wh = panel W × sun h × efficiency%. Shortfall Ah = (load − yield) ÷ voltage when yield is low.

Q: 12 V vs 24 V? A: Higher voltage reduces amps for same watts—smaller cables.

Solar Panel Roof Space CalculatorEstimate how many panels fit on your roof and total system size in kW—updates live.Use this to know how big a system your roof can hold before getting quotes.
Solar Battery Bank SizeSize an off-grid battery bank from daily use and backup days.Use this to size a battery bank that carries you through cloudy days.
Battery Bank Size (Ah)Size a battery bank in amp-hours from load, runtime, and voltage.Use this to buy a battery bank big enough without overspending on capacity.
Marine Trolling Motor Runtime CalculatorContinuous amp draw vs. bank Ah for trolling and house loads.Use this to know how long you can troll before the battery calls it a day.

Yield Wh = panel W × sun h × efficiency%. Shortfall Ah = (load − yield) ÷ voltage when yield is low.

Q: 12 V vs 24 V? A: Higher voltage reduces amps for same watts—smaller cables.

Yield Wh = panel W × sun h × efficiency%. Shortfall Ah = (load − yield) ÷ voltage when yield is low.

Q: 12 V vs 24 V? A: Higher voltage reduces amps for same watts—smaller cables.