2018 redhawk wont start

[jay0770]

Bought our 2018 Redhawk ls t year. When it has been sitting for over a few weeks I have to constantly jump start it to start the motorhome. Took the battery in to be checked nothing wrong with the battery. Its almost like it is trying to start using the aux switch. Not sure what to check. New to this motor home stuff.

[CAG]

It should not drain the vehicle battery that fast. You man need to add a cutoff to the vehicle battery but you have something else going on that is draining that battery. The coach battery, if the 12V cutoff is engaged will last for months. I do use a small solar panel to both batteries when parked in storage to help maintain the batteries.

[TG-Roamy]

This may sound silly, and I'm not sure if this is your first motorhome purchase, but I learned from a similar experience to make sure I had the Main Power turned off when not using the Motorhome. On my 2015 Redhawk that switch is right by the door.
Also depending on where you are, my battery seems to struggle when it's been sitting in freezing conditions. I go out and run the generator and motorhome once a month to keep things working.

[mini4mw]

Not sure if you have the same tablet style radio I have in mine, but small drains from aux items may be doing it. I always make sure everything is unplugged from the 12v sockets (old cig lighters) and the tablet is not plugged into the dash (powered off and on the floor). Make sure similar things like door lights are not stuck on. If you didn't buy new, perhaps the previous owner added some gadgets that are doing it. I leave mine for 4-8 weeks at a time and it always cranks right up.

While you are troubleshooting/trying to find the drain you could install something like this to easily disconnect the chassis battery so it doesn't drain. Looks like it should be an easy install.
https://www.amazon.com/Ampper-Batter.../dp/B0882VCYDZ

[CAG]

Originally Posted by mini4mw

Not sure if you have the same tablet style radio I have in mine, but small drains from aux items may be doing it. I always make sure everything is unplugged from the 12v sockets (old cig lighters) and the tablet is not plugged into the dash (powered off and on the floor). Make sure similar things like door lights are not stuck on. If you didn't buy new, perhaps the previous owner added some gadgets that are doing it. I leave mine for 4-8 weeks at a time and it always cranks right up.

While you are troubleshooting/trying to find the drain you could install something like this to easily disconnect the chassis battery so it doesn't drain. Looks like it should be an easy install.
https://www.amazon.com/Ampper-Batter.../dp/B0882VCYDZ

No offense but rather than trying to track down all of the parasitics in the rig, set up a battery cutoff on both the vehicle and the coach battery. Once you flip those nothing is going to drain the battery and the normal battery drain from just sitting idle is 3% per month. A small solar charger will more than make up for that.