Coast Resorts Open Roads Forum: Tech Issues: Lithium Battery Upgrade


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StirCrazy

Kamloops, BC, Canada

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Joined: 07/16/2003

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Posted: 08/13/23 08:54am

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ppine wrote:

Now add the discussion about how to protect your alternator and prevent current flow from your starter battery to your house battery.

If you are adding lithium batteries you must account for these two things.

on a factory vehicle it is a non-issue, although it still won't charge your battery properly. The reason I say it's a non-issue as it will never get enough amperage to cause the alternator an issue as the fuse would blow first. That's why the fuse is there.

Too many people watched a sales video on YouTube and think this is what will happen, that video was set up so this could happen so they could sell their product.

Now having said that I would recommend a dc to dc charger. not to protect your alternator but rather to properly charge your LFP battery. I don't have one as I have more than enough solar to keep mine charged, but I am thinking of adding one to use as an emergency generator if something goes wrong with the solar. for the 150 bucks you can't go wrong.

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trailrider

Idaho Is Full! Don't Move Here!!!

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Posted: 08/15/23 07:27pm

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ppine wrote:

Simple. I pulled the fuse in the trailer that is in that circuit. No need
to charge the trailer batteries from the alternator with the solar on the roof.

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ppine

Northern Nevada

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Posted: 09/01/23 10:15am

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The new Ram truck has a 220 amp alternator.
I am adding a 50 amp DC/DC charger to take advantage of all of that power. Then I have solar panels for when the rig is parked.
I am installing the new Renogy charger which also has built in an MTTP solar charger.

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