Calculate what size DC-DC charger (booster/B2B) you need to charge your house battery from the alternator while driving.
Fill in all fields to calculate the DC-DC charger size.
We calculate how much energy you want to replenish per day, divide by your driving hours, and round up to the nearest common DC-DC charger size. We account for the maximum charge rate of your battery type (0.5C for lithium, 0.1C for lead-acid).
This calculation is an estimate. Actual charge current depends on alternator capacity, cable thickness and ambient temperature. Consult a professional for installation.
This is one part of an installation. Work out the rest.
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