Boat Battery Amps Calculator

Easily figure out the energy / amperage requirements for your boating trip .

A simple application to quickly calculate your amperage use and supply for an upcoming sailboat or power boat trip. The application includes many common boat electronics and their typical amp hour draws. You can then enter the estimated time of use, down to the second if you wish, for each device. The program will show you an estimate of the overall amp hour usage against your total battery capacity. You can also add in any supply times and amperages, like running an alternator, solar panels, etc.

The app can display a simple pie graph, detailing which of your electronics are drawing the most energy. All amperage draws are fully customizable for your device... or you can simply use the stock numbers. You can add, change the name of, or hide any devices that may be specific to your sailboat or power boat.

An information section provides many useful bits of knowledge, such as wire size charts, definitions, battery life tips, a power (Watts, Volts, Amps) calculator, etc.

I wrote the app because I was tired of guessing when I might not be able to start my engine, and wanted a way to quickly calculate an estimate of battery drain and supply. I've found it much easier to use than drawing out a paper chart, and thought others may like to use it as well. It is absolutely free, with no ads, but you are welcome to buy me a coffee within the app if you find it useful!