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Replacing AGM Batteries with Lithium Ion on a Boat

After three and a half years of cruising, our AGM batteries weren’t holding a charge like they used to.  We did our research and decided to upgrade our house bank to Lithium-ion (LiFePO4) batteries. Our AGM Battery Set-Up Battery Setup from the Factory Here’s what our Helia 44 came with from the Fountaine Pajot factory:…