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post #1 of Old 12-13-2019 Thread Starter
max_w101
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Charging outboard battery onboard

I bought a 12V 135ah Lithium Iron LiFePo4 Deep Cycle Rechargeable Battery with built in BMS off eBay for my electric outboard. Itís meant to be a ďdrop inĒ replacement for lead acid car battery. Normally I charge at home with supplied battery charger that plugs into its own port and all is well. What is the best way to charge onboard?

1) plug the supplied charger into my inverter

Or

2) use jumper leads to connect the discharged battery in parallel to my house bank?

I assume 2 is more efficient as the voltage is not going through a step up / step down path, but not sure if itís good for the rest of the batteries etc






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