Need advice solar, lithium and power converter

[SolarPoweredRV]

The answer to your question is NO you don't need to change it. It will charge your LiFePO4 batteries it just wont charge them to 100%. I believe that it will charge them to 95%. So you can change it latter when the timing is good for you.

You don't have to change out the Converter right away, but I would suggest an upgrade for the future.

Since you have Solar Charging available, your Solar panels can charge your battery to 100% and your Converter will supply the load for all the 12v devices inside the camper.

In some ways this is similar to the way I have my system setup, the charger (Inverter/Charger) only charges my batteries to 75% when I am plugged into shore power and I rely on the Solar panels to reach 100% charge.

I have set this up intentionally because I intend to rely on the Solar system for most of my electric energy and Shore Power is only a "stop-gap" measure to keep my batteries from being depleted.

[MnemonicGhost]

All great responses, thank you. I will think about my next steps with this info in mind.

[Riverbug]

The 30/50 amp rig doesn't matter. The rule of thumb is to pick one the same size as the one your replacing. In my case it came with a 55 amp converter so I replaced it with the closest to it which is the PD 60 amp unit. You can go bigger but need to make sure the current wiring can handle the larger load or replace it. Going with the same size takes that worry out of the equation. The 55/60 amp converter size is how much DC power it can provide.

Don't forget to check the manufacturers recommended max charge amperage. Ours has a 50 amp max.

[JKellerJr]

Don't forget to check the manufacturers recommended max charge amperage. Ours has a 50 amp max.

True, battleborns have the same max but it doubles with 2 batteries. 2=100 amp max 3=150 max etc.

Also even with the 60 amp PD converter you’ll never see that. The 12v loads come off first. I don’t think I ever saw anything above a low 40’s charge rate.

[orbiker]

Don't forget to check the manufacturers recommended max charge amperage. Ours has a 50 amp max.

True, battleborns have the same max but it doubles with 2 batteries. 2=100 amp max 3=150 max etc.

Also even with the 60 amp PD converter you’ll never see that. The 12v loads come off first. I don’t think I ever saw anything above a low 40’s charge rate.

I looked at it a bit different. The OP'er has 2 batteries, so a possible 60A coming out divided by 2 = 30 to each possible. That would charge back up pretty fast. KEN

[Brother_Bluto]

I just replaced the 55A WFCO converter that came from factory with a 60A Progressive Dynamics for LiFePo4 batteries. IMO the hardest part of the whole swap is removing the basement walls to get at it. Just remember to shut off AC power and the DC feed from the battery before you start.

[Riverbug]

True, battleborns have the same max but it doubles with 2 batteries. 2=100 amp max 3=150 max etc.

Also even with the 60 amp PD converter you’ll never see that. The 12v loads come off first. I don’t think I ever saw anything above a low 40’s charge rate.

I looked at it a bit different. The OP'er has 2 batteries, so a possible 60A coming out divided by 2 = 30 to each possible. That would charge back up pretty fast. KEN

Valid points, thanks.

[hartcentr]

The answer to your question is NO you don't need to change it. It will charge your LiFePO4 batteries it just wont charge them to 100%. I believe that it will charge them to 95%. So you can change it latter when the timing is good for you.

I looked into lithium before going with AGM, and was told by tech support at WFCO that their regular converter (which I believe is in all GD units) would only charge the lithium to about 85%.

This is the Lithium converter/charger I would have bought had I went with lithium batteries. It will handle lithium OR flooded/sealed. All that needs to happen is to change a jumper setting.

https://www.amazon.com/dp/B08KJJF7L8...v_ov_lig_dp_it

[PerryDog]

I have a 2021 Momentum 349M, I am adding a 400w solar charge system with a 40a MPPT charge controller. I am also wanting to add two 100AH lithium batteries to the setup.

My question is.... Will I need to change the shore power charger/converter to support the new batteries? If so recommendations?

I might add a 2000w pure sine wave inverter in the future but for now I just want the solar to keep the batteries charged while it's not on shore power, but then when connected to shore power I want the batteries to fully charge to 100%.

As far as lithium batteries go, I got a message this morning from Battleborn Batteries and their 100 ah batteries are on sale for $799. This is the best price I have seen on these batteries. I bought 2 last year and they have been a great addition to my Rv.

[opandy]

You should change the converter. Also a DC to DC charger will help to keep your trucks alternator alive.