Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 01-26-2019, 01:28 AM   #1
Junior Member
 
Brand: Thor Motor Coach
State: Alabama
Posts: 7
THOR #14121
Batteries

I thought I had the coach batteries off in my 2019 Miramar 35.2. Today both the engine battery and coach batteries were dead. I jumped it off and got it started. It has now been plugged into shore power for 5 hours. Question is how long does it take the batteries to fully charge and how can I tell if they are charging. The leveling jacks control panel has all lights flashing and the jacks won’t operate. Tried with the engine running. Read online that is a low voltage indicator
__________________

__________________
Kh4auburn is offline   Reply With Quote
Old 01-26-2019, 01:34 AM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Quantum WS31
State: Washington
Posts: 890
THOR #7205
Make sure the use/store switch is in the use position to charge when plugged in. 5 hours is probably long enough to have a fair charge. But, overnight is better. Hopefully draining them didn't totally ruin them.
__________________

__________________
Pat & Becky & now Katie
Wenatchee, WA
99dart is offline   Reply With Quote
Old 01-26-2019, 01:37 AM   #3
Junior Member
 
Brand: Thor Motor Coach
State: Alabama
Posts: 7
THOR #14121
Thanks. The main off is just a toggle switch above the door. The red light is on all the time. Can’t figure out if that means the coach batteries are on or off

Edit...unplugged from shore power and lights were working off batteries, but not at full brightness. Going to let them charge overnight and see if they will hold a full charge.
I had 2004 Southwind for 15 years....this new one is a different world ��
__________________
Kh4auburn is offline   Reply With Quote
Old 01-26-2019, 04:28 AM   #4
Senior Member
 
Long & Winding road's Avatar
 
Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
Posts: 2,358
THOR #12231
Let them charge over night then the next day take them off charge - wait 30 minutes and check the voltage with your multi meter (at the battery).

Full charge (but normally quoted at like 75 deg temps - will be lower if its cold outside) is usually between 12.7 and 12.8 on most batteries, 12.4 - 12.6 is 75 %, 12.2 - 12.3 is 50% and 11.8 or less is dead. (I gave you wide ranges to cover LA, AGM, Gel).

When I tested my 9 mo old OEM battieries they would drop immediately to 9.7 - 9.8 = super dead ever commming back to life.

So if your batteries are at like 75% or above, check a few hours later and see if they continue to drop and then the next day as well. If they stat at like 75% + charge I will milk them for longer but keep your eye on them and shop around for replacements (IMO). IF they are at 50% just replace them right away.
__________________
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, Fresh water surge tank, Black Tank Tornado flush, 4999 zip ties.
Long & Winding road is offline   Reply With Quote
Old 01-26-2019, 01:56 PM   #5
Junior Member
 
Brand: Thor Motor Coach
State: Alabama
Posts: 7
THOR #14121
Quote:
Originally Posted by Long & Winding road View Post
Let them charge over night then the next day take them off charge - wait 30 minutes and check the voltage with your multi meter (at the battery).

Full charge (but normally quoted at like 75 deg temps - will be lower if its cold outside) is usually between 12.7 and 12.8 on most batteries, 12.4 - 12.6 is 75 %, 12.2 - 12.3 is 50% and 11.8 or less is dead. (I gave you wide ranges to cover LA, AGM, Gel).

When I tested my 9 mo old OEM battieries they would drop immediately to 9.7 - 9.8 = super dead ever commming back to life.

So if your batteries are at like 75% or above, check a few hours later and see if they continue to drop and then the next day as well. If they stat at like 75% + charge I will milk them for longer but keep your eye on them and shop around for replacements (IMO). IF they are at 50% just replace them right away.
Thank you. I found the owners manual for the LCI Motorized Standard Leveling System I have online. To reset you hold all 4 directional buttons down for about 10 seconds. I did that this morning and the jacks worked and the low voltage indicator no longer flashes.
I have to take it back to the dealer this week to fix a few minor issues. I have a ton of questions written down and will also get them to test the batteries.
Can't tell you how much I appreciate the replies!

Ken
__________________
Kh4auburn is offline   Reply With Quote
Old 01-26-2019, 02:37 PM   #6
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 434
THOR #13869
Here is something extra I did.
When we are at home, and it is stowed, in its parking spot with 110 nearby.
I bought two separate battery tenders and installed one each to the: coach batteries as a pair, and the chassis battery.
They milli amp charge and will not over charge the batteries while sitting idle.

What I learned from reading these threads, so thank y'all who inform us, is I do not want the tender hooked to the coach batteries, when the 30 amp is plugged in, and when plugged like that, the stow switch needs to be in use position.
Because the coach has a coach battery charger running when hooked to shore power, and use switch on.

That was good to know, because I recently had a 30 amp outlet installed off our garage, where a cement pad is planned for our baby, the RV.

I ran the coach batteries, battery tender lead, up and into the engine compartment.
Now it, and the chassis battery tender lead, being next to each other, I can hide both tenders under the hood.
If you are careful, an extension cord will tuck up into there, and you can close the engine compartment hood.
Every lead is tied to stay in place, but the battery tenders themselves, get removed and stowed once we get under way.
This is my at home stowing modification.
__________________
At my young age, lol...
You could still maybe see me rolling down the highway, on my motorcycle, pulling a trailer with camp gear, smiling, beard in braids...
Feeling The Wind! (FTW)
Rusty
10scDust is offline   Reply With Quote
Old 01-26-2019, 03:49 PM   #7
Junior Member
 
Brand: Thor Motor Coach
State: Alabama
Posts: 7
THOR #14121
Quote:
Originally Posted by 10scDust View Post
Here is something extra I did.
When we are at home, and it is stowed, in its parking spot with 110 nearby.
I bought two separate battery tenders and installed one each to the: coach batteries as a pair, and the chassis battery.
They milli amp charge and will not over charge the batteries while sitting idle.

What I learned from reading these threads, so thank y'all who inform us, is I do not want the tender hooked to the coach batteries, when the 30 amp is plugged in, and when plugged like that, the stow switch needs to be in use position.
Because the coach has a coach battery charger running when hooked to shore power, and use switch on.

That was good to know, because I recently had a 30 amp outlet installed off our garage, where a cement pad is planned for our baby, the RV.

I ran the coach batteries, battery tender lead, up and into the engine compartment.
Now it, and the chassis battery tender lead, being next to each other, I can hide both tenders under the hood.
If you are careful, an extension cord will tuck up into there, and you can close the engine compartment hood.
Every lead is tied to stay in place, but the battery tenders themselves, get removed and stowed once we get under way.
This is my at home stowing modification.
Great information. Thank you. I am having a 50amp breaker installed next week so it will be plugged into shore power anytime it is parked.
__________________
Kh4auburn is offline   Reply With Quote
Old 01-26-2019, 08:38 PM   #8
Member
 
Mac man's Avatar
 
Brand: Thor Motor Coach
Model: Freedom elite
State: Florida
Posts: 35
THOR #12255
Haven’t seen posted but you should check water level in the battery cells and add distilled water to the bottom of the plastic ridge covering the metal plates! Good luck!
__________________
Mac man is offline   Reply With Quote
Old 01-27-2019, 03:33 AM   #9
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 434
THOR #13869
Quote:
Originally Posted by Mac man View Post
Haven’t seen posted but you should check water level in the battery cells and add distilled water to the bottom of the plastic ridge covering the metal plates! Good luck!
Yes, that too, good call.
I failed to mention that I did that while at the tender leads install.
Had to replace one of the batteries at that time too, one went bad according to load test and leveling low battery error!

Check battery water level, at least two times a year, once in middle of the summer!
__________________

__________________
At my young age, lol...
You could still maybe see me rolling down the highway, on my motorcycle, pulling a trailer with camp gear, smiling, beard in braids...
Feeling The Wind! (FTW)
Rusty
10scDust is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 01:40 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
×