Chassis Battery Dead-ish

[MichaelEyeOh]

Hello Thor Family
2019 Thor AXIS 24.1 with a dead RV.

When connected to shore power everything works. Absolutely everything. Microwave A/C heat etc.

The chassis is dead and won't start. On the Lippert One Control panel the chassis battery is reading 1.46v. The battery monitor is dead as well. Blank screen no lights

The emergency start isn't working even after holding it for two minutes.

Looking for some troubleshooting tips. I'm in Hawaii now. RV is in upstate NY. I'll be working on it Monday or Tuesday

Any tips?

[16ACE27]

Of course everything works when plugged into SP - the converter supplies 12 VDC to the house DC buss.

You left out any information on the status of the house batteries - probably dead as well. If so, first thing you need to do is put an external charger on the house battery bank and charge those batteries until you can close the battery disconnect (USE/STORE to USE). Once closed the house battery bank should charge from the converter and when close to charged, the BIM should close and start charging the chassis battery.

I did use the "should" word a few times.

[lwmcguir]

One thing to add on is you will probably need a regular charger. Many smart chargers won't recover a dead battery

[Judge]

Originally Posted by MichaelEyeOh

Hello Thor Family
2019 Thor AXIS 24.1 with a dead RV.

When connected to shore power everything works. Absolutely everything. Microwave A/C heat etc.

The chassis is dead and won't start. On the Lippert One Control panel the chassis battery is reading 1.46v. The battery monitor is dead as well. Blank screen no lights

The emergency start isn't working even after holding it for two minutes.

Looking for some troubleshooting tips. I'm in Hawaii now. RV is in upstate NY. I'll be working on it Monday or Tuesday

Any tips?

The Levelers run off the house batteries and not the chassis batteries. If the USE / STORE switch was in the STORE position and you are plugged into shore power, you will have 12V from the converter as Ted stated.... but your house batteries won't get charged. And neither will the chassis battery if you have a BIM.

[MichaelEyeOh]

Sorry. I should have clarified. The house/coach batteries are reading a solid charge when not using shore power.

1. Is it possible I accidentally toggled the battery disconnect, and
2. Would that matter?
3. Wouldn't the emergency start, held for a couple of minutes, charge the chassis battery? It's not.
4. Where the heck IS the chassis battery ? I guess I have to RTFM lol

[MichaelEyeOh]

It's a 30 amp unit. It's currently connected to 30 amp wired to a regular plug (standard looking house outlet) but the campground said it's a 30 amp and used an adapter. I have my surge protector on it and reads reverse polarity

[lwmcguir]

Originally Posted by MichaelEyeOh

It's a 30 amp unit. It's currently connected to 30 amp wired to a regular plug (standard looking house outlet) but the campground said it's a 30 amp and used an adapter. I have my surge protector on it and reads reverse polarity

What does your VOM say?

[Judge]

Originally Posted by MichaelEyeOh

Sorry. I should have clarified. The house/coach batteries are reading a solid charge when not using shore power.

1. Is it possible I accidentally toggled the battery disconnect, and
2. Would that matter?
3. Wouldn't the emergency start, held for a couple of minutes, charge the chassis battery? It's not.
4. Where the heck IS the chassis battery ? I guess I have to RTFM lol

The chassis battery(ies) is your starting battery. Your house batteries power the 12V circuits in the coach. They also power the levelers and start the generator. The house batteries also power the inverter if you have one.

If you moved the USE / STORE switch to STORE, the batteries won't charge. If the coach sits long enough, they can drain down from parasitic current.

The emergency start switch uses the house batteries to boost the chassis battery if it drains down and won't start the coach. It can also be used to use the chassis battery to boost the house batteries to start the generator.

[MichaelEyeOh]

Originally Posted by lwmcguir

What does your VOM say?

I'm in Hawaii. The RV is currently in Upstate NY. I'm trying to have my troubleshooting list ready to go for when I get back home and head up.

[16ACE27]

Originally Posted by MichaelEyeOh

Hello Thor Family
2019 Thor AXIS 24.1 with a dead RV.

When connected to shore power everything works. Absolutely everything. Microwave A/C heat etc.

The chassis is dead and won't start. On the Lippert One Control panel the chassis battery is reading 1.46v. The battery monitor is dead as well. Blank screen no lights

The emergency start isn't working even after holding it for two minutes.

Looking for some troubleshooting tips. I'm in Hawaii now. RV is in upstate NY. I'll be working on it Monday or Tuesday

Any tips?

Originally Posted by MichaelEyeOh

Sorry. I should have clarified. The house/coach batteries are reading a solid charge when not using shore power.

1. Is it possible I accidentally toggled the battery disconnect, and
2. Would that matter?
3. Wouldn't the emergency start, held for a couple of minutes, charge the chassis battery? It's not.
4. Where the heck IS the chassis battery ? I guess I have to RTFM lol

Yeah, you're still not clear and won't be until you are at the RV.

1.46 V is NOT a "solid charge"
Where are they reading this "solid charge"
Define "solid charge"

The chassis battery is under the hood on the passenger side under the desk.
The house batteries are under the steps.

Put a voltmeter on the batteries after unplugging from SP for an hour and tell us what the voltage is. Then plug into SP and read the voltages again, tell us what it is. We'll go from there.

Do your interior lights work when not connected to SP?

[MichaelEyeOh]

Originally Posted by 16ACE27

Yeah, you're still not clear and won't be until you are at the RV.

1.46 V is NOT a "solid charge"
Where are they reading this "solid charge"
Define "solid charge"

The chassis battery is under the hood on the passenger side under the desk.
The house batteries are under the steps.

Put a voltmeter on the batteries after unplugging from SP for an hour and tell us what the voltage is. Then plug into SP and read the voltages again, tell us what it is. We'll go from there.

Do your interior lights work when not connected to SP?

1. The solid charge comment was for the house/coach batteries. They are reading 12+ according to the Lippert One Control panel
2. 1.46 v was the reading on the panel for the chassis battery
3. The battery monitor panel below the Battery disconnect was dead.
4. Disconnected from Shore power all cabin lights and electric work fine, as they are running off the coach/house battery.
5. Anything that runs off the chassis, like the privacy screen and radio and ignition, is dead.

My buddy was using my RV and discovered this. He attempted to use the Emergency Start. He held it for a few minutes and tried to start it and got nothing.

[16ACE27]

Originally Posted by MichaelEyeOh

1. The solid charge comment was for the house/coach batteries. They are reading 12+ according to the Lippert One Control panel
2. 1.46 v was the reading on the panel for the chassis battery
3. The battery monitor panel below the Battery disconnect was dead.
4. Disconnected from Shore power all cabin lights and electric work fine, as they are running off the coach/house battery.
5. Anything that runs off the chassis, like the privacy screen and radio and ignition, is dead.

My buddy was using my RV and discovered this. He attempted to use the Emergency Start. He held it for a few minutes and tried to start it and got nothing.

12.0 volts is less than 50% charged IF you have no bad cells.

The radio runs off the house batteries.

[cofred]

Same thing happened to me when my Bird/Thrombetta failed. Not sure if you have this set up or a BIM, but I would suspect that this is your failure point based on your description + my experience.

Good luck!

[Kcass]

This happened to us earlier this year. Replaced the chassis battery and all was good.