Lithium Batteries on Boats: A Real World Example of a Lithium Battery Install

Name: Lithium Batteries on Boats: A Real World Example of a Lithium Battery Install
Uploaded: 2023-09-06T15:00:11.000Z
Duration: 10 min 38 s
Description: A 40-foot Beneteau sailboat replaces AGM batteries with Battle Born lithium to support Starlink power demands.

6. september 2023 · 10 min · 6K visninger

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A 40-foot 2018 Beneteau sailboat based in Anacortes, Washington, upgraded its house bank from three 80-amp-hour AGM batteries to three 75-amp-hour Battle Born lithium batteries to support increased power demands from Starlink.1:06 The installation replaced the existing internally regulated alternator with a Balmar MC-618 external voltage regulator to prevent alternator overheating during high-amperage lithium charging.3:18 To maintain charging for the boat's separate starter and bow thruster AGM banks, the system uses a DC-to-DC charger triggered by an ignition-switched relay.5:27 The primary shore power charger was repurposed for the lithium bank, while a new 15-amp multi-output charger handles the remaining AGM banks.6:16 A dump protection device provides a safeguard against alternator damage should the lithium battery management system (BMS) open unexpectedly.9:30 The owners report successful operation, including charging rates of 80 amp-hours per hour while underway.6:56 Proper configuration and adherence to ABYC standards are essential for safety and insurance compliance.7:23