Boat Amp Hour Calculator

System Setup

System Voltage

Battery Chemistry

Days of Autonomy

System Efficiency

Daily Onboard Loads

Appliance Watts (W) Hours/Day

Fridge / Freezer

Chartplotter & VHF

LED Cabin Lighting

Water & Bilge Pumps

Inverter / AC Loads

Daily Energy Requirements

Daily Energy (Wh)

0

Daily Demand (Ah)

0

Battery Bank & Solar Sizing

Usable Capacity (Ah)

0

Min Bank Size (Ah)

0

Recommended Bank Size (Ah + 20% Safety Margin)

0

Min Solar Array (Watts @ 4.5 Sun-Hours)

0

Base Formulas

Watts Amps × Volts

Amp-Hours Watt-Hours / Volts

Bank Size Daily Ah / DoD

Solar Panel Daily Wh / 4.5h