Velero Reginavideo
We switched to LifePO4 and installed a crazy amount of amps!
16 January 2026 · 15 min · 3K views
Two LiFePO4 batteries installed in sailboat storage compartment
What this video covers
Javi, host of the sailboat Regina, replaces a failed lead-acid battery bank with two 300Ah LiFePO4 batteries.1:06 To ensure balanced charging and longevity, he installs the batteries in a parallel configuration using bus bars rather than a standard diagonal connection.5:44 Each battery connects to the positive bus bar via an individual 60-amp fuse, with identical cable lengths for both positive and negative leads to maintain electrical equilibrium.11:08 He reuses existing heavy-gauge wiring by crimping new terminal lugs.8:07 The system integrates multiple solar charge controllers—configured via Bluetooth for lithium charging profiles of 14.4V absorption and 13.5V float—to manage 350W, 200W, and 120W solar arrays.10:03 To protect the engine alternator from the high current demands of lithium chemistry, he installs an Orion TR Smart DC-DC charger.12:33 This device regulates the power flow from the alternator to the service bank, preventing alternator overheating.13:38 The installation includes a dedicated shunt for monitoring and a separate 50W solar setup for the engine start battery.14:35
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