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Topic starter
July 28, 2023 4:52 pm
I recently replaced an AGM house bank woth some litime lifepo4 batteries. I added a renogy 60A DC-DC charger to charge the house bank from the starter battery, off of the alternator, while underway.
My preexisting cristec AC-DC charger does a good job keeping the batteries topped off while at shore. Underway, the Renogy charger will charge the batteries to 100%. But once they reach 100%, they stop charging and unless I turn the engine off and restart it, house loads will just drain the batteries even though the engine is running.
Any ideas how to get the DC-DC charger to keep the batteries topped off while underway?
Thanks!
August 18, 2023 4:49 am
HY there i can see your post and i must say
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Incorrect Charger Settings: Make sure that the DC-DC charger is set to the appropriate charging parameters for lithium-ion batteries. Li-ion batteries require specific voltage and current levels for safe and effective charging.
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Charging Algorithm: Li-ion batteries have different charging characteristics compared to traditional lead-acid batteries. Ensure that your DC-DC charger has a charging algorithm suitable for Li-ion batteries, as using the wrong algorithm can damage the batteries.
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Battery Health: Check the health of your lithium-ion batteries. If the batteries are old or degraded, they may not hold a charge as effectively. It might be necessary to replace the batteries if they are no longer functioning optimally.
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Wiring and Connections: Ensure that the wiring and connections between the DC-DC charger, main battery, and lithium-ion batteries are secure and correctly connected. Loose or faulty connections can lead to charging issues.
Thanks and regards
JamesMasters
September 1, 2023 2:47 pm
not sure what your alternator is, but this can happen with a "smart" alternator. Mercury ( for one) is now shipping LIN controlled alternators on the V10.
Good read
