The solenoid complicates everything- so I've heard.įirst we upgraded the battery converter charger using per Go Westy to this newer one We have a 2003 Eurovan camper and have had an interesting time finding someone to help correctly install the new lithium battle born battery. Posted: Mon 4:17 pm Post subject: Re: Do I need a DC/DC charger?Ĭurious if anyone made this connection work yet? That would make it so that the two systems weren't connected when the key is on. Yeah, you could disconnect the trigger wire from the battery isolator solenoid/relay that's mounted to the firewall right above the battery. Is there a way to just disconnect the coach battery from the alternator without disconnecting the battery altogether? Posted: Thu 11:37 am Post subject: Re: Do I need a DC/DC charger? I think I understand it conceptually but I don't know all the components involved. I have a pretty good handle on the "house" wiring side of things, but the interaction with the alternator is still a bit of a mystery to me. I really don't necessarily need the alternator charging piece, but I do want to use to coach battery to power 12v outlets while driving. Is there a way to just disconnect the coach battery from the alternator without disconnecting the battery altogether? I have a disconnect installed to disconnect it from the system entirely. Posted: Thu 8:46 am Post subject: Re: Do I need a DC/DC charger? Renogy has similar stuff for cheaper, but their product support is supposedly kind of sketchy. I'm partial to Victron and they have bluetooth monitoring built in. Newer vehicles have better protection from this, but most older ones don't have any. This will overheat and fry your alternator. Lithium batteries can pull very large amounts of current when charging, a 100 Ah battery can pull 100+ A when charging from fully discharged. Posted: Thu 6:55 am Post subject: Re: Do I need a DC/DC charger? I'm thinking about doing the battery upgrade too. How could the alternator get ruined by charging a lithium battery? Posted: Thu 4:54 am Post subject: Re: Do I need a DC/DC charger? where would I find the wires that go to the solenoid relay Posted: Wed 2:35 pm Post subject: Re: Do I need a DC/DC charger? I think I'll be able to re-use all the wiring, and I should be able to just connect the two wires that go to the solenoid relay together. I plan to put the DC-DC in the back where the Magnetek used to reside, and where I mounted the victron replacement. Posted: Wed 2:27 pm Post subject: Re: Do I need a DC/DC charger?ġ.) You'll never fully charge the Lithium Iron Phosphate battery without it.Ģ.) If you ever fully discharge your battery, it could kill your alternator while re-charging. Not looking to add gear I don't need, but will do if there's good reason. Primarily I'm wondering if this might be important due to the different voltages/chemistries between the starting and house battery. The question I have is whether I need to add a DC/DC charger to this setup (and if so any recommendations on where to mount it?). Last year I replaced my house battery with a lifepo4 battery when I added a solar setup, and this year replaced the magnatek "converter" with Victron AC/DC charger. Posted: Wed 1:55 pm Post subject: Do I need a DC/DC charger? Quick sort: Show newest posts on top | Show oldest posts on top
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