Replacing Converter Panel in InTech Horizon Travel Trailer with Lithium Compatible Unit

Updated 04/02/2025 | Published 02/21/2020

Question:

If I am purchasing an InTech Horizon travel trailer with the PD4135K Power Center, what is the correct replacement if I want to change to lithium batteries? If I understand correctly, having a power center that is not intended for lithium means that lithium batteries cant fully charge. Are there other issues too?

asked by: Mimi H

Expert Reply:

Lithium batteries do require higher voltages to charge than standard batteries which is why the # PD4135K wouldn't work for them. The closest matching converter would be the # PD404KA which will be a bit larger psychically and has a higher amperage rating at 45 amps but it would work really well with your Lithium batteries.

expert reply by: Jameson C

Dave S.

3/28/2025

It is my understanding that the Intech Sol Horizon has a lithium switch on the converter to change to lithium charging? Is that not the case?

Jameson C.

3/31/2025

@DaveS We don't carry that brand of inverter but from what I found online it does appear to be lithium compatible.

Dave S.

4/2/2025

Do I need a DC/DC charger to protect my alternator?

Jameson C.

4/2/2025

@DaveS We have BCDC chargers like the Redarc part # RED96FR but what exactly are you trying to do?

Dave

4/2/2025

I am converting my travel trailer to lithium batteries. Pulling it with my 2024 3/4 ton GMC AT4.

Jameson C.

4/2/2025

@Dave To charge them from GMC then a BCDC charger is the way to go. If you want to charge them from a shore power outlet you'd want something like the # PD4135K. If you have a converter now you'd want to make sure it's lithium compatible.