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Lithium Battery Upgrades

Switching a boat from lead-acid to lithium is the biggest 12V decision most owners make this decade, and it is easy to get wrong. This section walks through LiFePO4 drop-in batteries, why the battery management system matters more than the price tag, and how lithium changes the way you charge from the alternator, solar, and shore power. You will find plain-language comparisons, real capacity math, and the cold-weather charging rules that protect your investment. We cover safety, wiring changes, and the mistakes that cook a brand new bank in a single season. Whether you run a weekend runabout or a liveaboard cruiser, the goal here is simple: help you spend once, wire it correctly, and get the usable amp-hours you actually paid for.

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