2025 Revel Chassis Battery and Winterization Concerns

[Hockey Dad]

Hi All,
I am new to RV'ing and have a 2025 Revel (built on 2024 chassis) that I bought new in May '26 so this is my first time preparing for winter. I bought it from a dealer in Florida while I live in Ohio so can't go back to the dealer (and unfortunately they are not at all helpful remotely with phone calls/emails).

First, the chassis battery doesn't seem to last more than about 2-3 weeks of non-usage (house batteries are fine). I find myself putting the vehicle on a trickle charger even for short periods between uses. This seems unusual to me but I wanted to check with the community to see if that is typical and my expectations are just off. Also, perhaps there are settings on the vehicle itself that I should change - if anyone has any tips I would appreciate it.

Second, I am looking to winterize the Revel and watching YouTube videos it seems there should be a siphon connection just below the Winterization valve but I don't have that on mine. Perhaps I am looking in the wrong location. Does anyone know if early builds perhaps had a different setup or if I am just looking in the wrong place?

I appreciate any insights.

Thanks

 

[Neemer]

Welcome to the wonderful world of MB Sprinters.

These units are very prone to parasitic drains on chassis batteries. It’s universal.

I know of a couple of ways to deal with it.

First, you could do as you have, and place a trickle charger on it.

Second, you could disconnect the battery. If yours is like mine, there is a small hatch down near your right ankle through which you can access a battery connection. I can get you a pic of it tomorrow if needed. It looks kinda like a small pistol. Push a top mounted button and remove.

 

[isabellathomas]

The parasitic drain point matches what I've run into with a 2024-chassis rig here in American Samoa, where it sits for weeks between trips and the humidity is brutal. I'm weighing a trickle charger against just disconnecting at the hatch, but I'm not sure the disconnect is convenient enough for short gaps, and I don't want to reset the radio and modules constantly. On the siphon fitting, I'd check whether yours is an early build before tearing things apart. For house-side planning I came across ECO-WORTHY 12V 280Ah LiFePO4 Battery Review but haven't decided anything. Has anyone confirmed the early-build valve layout?

 

[Hockey Dad]

Thanks for the insight (shared pain) on the battery issue. I am trying to avoid the battery disconnect path so that I can still use the remote door unlock and avoid redoing the radio setup every time. For now I guess I will just keep using the trickle charger.

I dug around a little bit and found the siphon hose behind the metal panel to the left of the winterization valve. It is a little bit inconvenient but not that big of a deal once I found it, was able to get winterization done last night.

Thanks all for the insights. If anyone has any other thoughts on how to extend chassis battery life (or ideas on the source of current draw while parked) I would really appreciate hearing them.