6 editable schematics

Boat wiring examples

Keep the bilge pump powered, retrofit a LiFePO4 house battery, or plan solar and separate-bank charging.

Bilge pump with an always-on supply

Keep the automatic bilge circuit powered when you switch off the rest of the boat.

Boat LiFePO4 house battery retrofit

Replace the house battery with LiFePO4, retain a lead-acid starter battery and charge through a current-limited DC–DC charger.

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Boat solar charging for a house battery

Follow a solar panel through its controller to a house battery, chartplotter and navigation lights.

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12V trolling motor with a separate battery

Give the trolling motor its own battery and keep the chartplotter on a separate supply.

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Shore charging for two boat batteries

Use separate charger outputs to replenish two batteries without joining their positive terminals.

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Boat dual battery selector switch

See how a 1–2–Both switch feeds the same boat circuits from either battery.

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