Want to know how many batteries and solar panels you need for your camper, boat, or off-grid setup? This easy-to-use calculator helps you estimate your energy needs — whether you’re using 12V or 230V devices. You’ll find out:

• How much battery capacity you need (AGM or lithium)

• How long you can stay off-grid based on your usage and number of days

• How many solar panels are needed to recharge your daily consumption

• And how large your inverter should be to power your appliances safely

Perfect for planning your electrical system — whether you’re aiming for a basic weekend setup or full off-grid independence.