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07-13-2020, 02:01 AM
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#1
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Junior Member
Brand: Thor Motor Coach
Model: ACE 30.1
State: Illinois
Posts: 6
THOR #15691
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Battery Issue!!
I have a battery question. I have an 2015 ACE 30.1. It has 4 Trojan T105 6v Batteries. Had it for about a year and have had no electrical issues.
This week I went out and flipped the use/store switch to 'use'. All seemed normal. interior lights came on, Jensen stereo in the dash came on. I Turned on the Freedom HFS Inverter and all looked fine. My goal today was to exercise the 4K Onan Gen. It fired up fine, waited a few minutes and turned on the A/C to apply a load. It ran for about 90 minutes. I then turned off the A/C and let the gen run under load for about 10 minutes before shutting it off.
It was then I noticed the ceiling lights went off as well as the inverter. So at this point the only time I appear to have 12 volts is when either the generator is running or the shore power is on.
When in the use position all I get is the Jensen stereo in the dash to come on.
Checked the batteries water level, it was low in 6 of the 12 cells, so I topped them off. The stock battery monitor panel says batteries are full. Checked voltage at the batteries and they were all around 6.25 Volts.
Any Ideas / suggestions would be appreciated.
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07-13-2020, 03:19 AM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35m
State: North Carolina
Posts: 945
THOR #13505
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Lead acid 5 yr old batteries?
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Retired Squid who has a Retired Squid that drives him around in a RV!
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07-13-2020, 03:27 AM
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#3
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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Sounds like batteries are done for!
__________________
Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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07-13-2020, 10:55 AM
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#4
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Junior Member
Brand: Thor Motor Coach
Model: ACE 30.1
State: Illinois
Posts: 6
THOR #15691
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Not sure exactly how old they are. I do not believe Thor would have put Trojan T-105 Batteries in originally.
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07-13-2020, 12:59 PM
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#5
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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check the battery disconnect.
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2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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07-13-2020, 09:32 PM
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#6
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,328
THOR #6903
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You have bad batteries or battery, 6.4 after charging or in that range with a good meter
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07-13-2020, 11:07 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: Chateau 31L
State: Florida
Posts: 2,063
THOR #12189
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Quote:
Originally Posted by rking81157
cut..
It has 4 Trojan T105 6v Batteries.
Checked the batteries water level, it was low in 6 of the 12 cells, so I topped them off.
cut...
Any Ideas / suggestions would be appreciated.
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If you have 4-6s, you have 24 cells. What are the other 12? 6.4 sounds low to me. Most inverters I've researched shutdown at 10.5 though that may not be your case. It would explain the 'outage' as you explained it. Need more info to help.
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07-14-2020, 12:27 AM
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#8
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,390
THOR #7035
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Quote:
Originally Posted by The_Breeze
If you have 4-6s, you have 24 cells. What are the other 12? 6.4 sounds low to me. Most inverters I've researched shutdown at 10.5 though that may not be your case. It would explain the 'outage' as you explained it. Need more info to help.
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6.4 VDC across a 6 volt FLA battery is fully charged.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-14-2020, 11:06 AM
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#9
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,328
THOR #6903
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My Fluke will generally read 6.38 on fully charged Trojan T105
Go with AGM replacement so you don't have to check water levels
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07-15-2020, 12:26 AM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: ACE 30.2
State: Massachusetts
Posts: 441
THOR #8180
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They’ll typically show over 6V at charge and even 6.25V sounds good but you’ll see V drop quickly when you start to draw from them.
I think my bigger ? Is why was the water level so low to begin with. Battery neglect I would guess. I service my original pb acid batteries religiously. I only ever add a few ounces of water twice a year. Batteries can be expensive so take care of them.
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USN - RETIRED NUKE
Taunton, MA
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07-18-2020, 06:32 PM
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#11
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Junior Member
Brand: Thor Motor Coach
Model: ACE 30.3
State: California
Posts: 16
THOR #15932
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Did you check the circuit breakers in the battery compartment?
Did you wiggle the battery cables to see if any of them is loose?
Did you check the fuses and circuit breakers inside the coach?
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07-18-2020, 07:13 PM
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#12
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Junior Member
Brand: Thor Motor Coach
Model: ACE 30.1
State: Illinois
Posts: 6
THOR #15691
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Quote:
Originally Posted by woodbender
Did you check the circuit breakers in the battery compartment?
Did you wiggle the battery cables to see if any of them is loose?
Did you check the fuses and circuit breakers inside the coach?
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Problem identified - In the engine compartment inside the RV Custom Products TH-1020 BCC box. There was a gray re-settable breaker in the lower left corner of the box. Be being tripped it was not sending 12 volts to the 12 v fuse panel. Reset and all is good to go. Learned a little more about the 12 v system. Thanks all for your suggestions and advice. See link attached for pictures of the box.
https://rvcustomproducts.com/th-1020
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07-19-2020, 01:22 PM
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#13
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Junior Member
Brand: Thor Motor Coach
State: Alabama
Posts: 3
THOR #17043
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Thor converter
Quote:
Originally Posted by rking81157
I have a battery question. I have an 2015 ACE 30.1. It has 4 Trojan T105 6v Batteries. Had it for about a year and have had no electrical issues.
This week I went out and flipped the use/store switch to 'use'. All seemed normal. interior lights came on, Jensen stereo in the dash came on. I Turned on the Freedom HFS Inverter and all looked fine. My goal today was to exercise the 4K Onan Gen. It fired up fine, waited a few minutes and turned on the A/C to apply a load. It ran for about 90 minutes. I then turned off the A/C and let the gen run under load for about 10 minutes before shutting it off.
It was then I noticed the ceiling lights went off as well as the inverter. So at this point the only time I appear to have 12 volts is when either the generator is running or the shore power is on.
When in the use position all I get is the Jensen stereo in the dash to come on.
Checked the batteries water level, it was low in 6 of the 12 cells, so I topped them off. The stock battery monitor panel says batteries are full. Checked voltage at the batteries and they were all around 6.25 Volts.
Any Ideas / suggestions would be appreciated.
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Sadly we have the same poorly constructed RV Thor 30.1. I had the exact same issue and replaced the converter. It wasn't difficult. It’s located under the bed and only took about 30 minutes.
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07-19-2020, 04:19 PM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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Quote:
Originally Posted by rking81157
I have a battery question. I have an 2015 ACE 30.1. It has 4 Trojan T105 6v Batteries. Had it for about a year and have had no electrical issues.
This week I went out and flipped the use/store switch to 'use'. All seemed normal. interior lights came on, Jensen stereo in the dash came on. I Turned on the Freedom HFS Inverter and all looked fine. My goal today was to exercise the 4K Onan Gen. It fired up fine, waited a few minutes and turned on the A/C to apply a load. It ran for about 90 minutes. I then turned off the A/C and let the gen run under load for about 10 minutes before shutting it off.
It was then I noticed the ceiling lights went off as well as the inverter. So at this point the only time I appear to have 12 volts is when either the generator is running or the shore power is on.
When in the use position all I get is the Jensen stereo in the dash to come on.
Checked the batteries water level, it was low in 6 of the 12 cells, so I topped them off. The stock battery monitor panel says batteries are full. Checked voltage at the batteries and they were all around 6.25 Volts.
Any Ideas / suggestions would be appreciated.
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wow 4 Trogans, big bucks.
Trivia question:
How many volts CAN you get out of 4 6v batteries?
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07-19-2020, 04:40 PM
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#15
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,390
THOR #7035
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Quote:
Originally Posted by abjbrtd
wow 4 Trogans, big bucks.
Trivia question:
How many volts CAN you get out of 4 6v batteries?
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Depending on the battery connection configuration with no other devices:
6
12
24
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-19-2020, 05:14 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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Quote:
Originally Posted by 16ACE27
Depending on the battery connection configuration with no other devices:
6
12
24
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Close
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07-19-2020, 08:03 PM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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Quote:
Originally Posted by 16ACE27
Depending on the battery connection configuration with no other devices:
6
12
24
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And 18
This was a make you think question from a dc power class I took in the early 80's
The closest drawing I can find is series parallel using 12 6v for 36 volts.
Wiring Your Battery Bank In Series Parallel
To get 18v from 4 6v...you would have 2 6v wired in parallel = 6v, and 2 6v wired in series = 12 v, wired in series = 18
(6 + 6 =6) + (6 +6 =12) = 18
We had a tech replacing the 12v batteries in a series parallel system that made 48v, OOooPPppssss he wired it just series $100K system poof.
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07-19-2020, 08:10 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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Quote:
Originally Posted by 16ACE27
Depending on the battery connection configuration with no other devices:
6
12
24
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And 18
This was a make you think question from a dc power class I took in the early 80's
The closest drawing I can find is series parallel using 12 6v for 36 volts.
Wiring Your Battery Bank In Series Parallel
To get 18v from 4 6v...you would have 2 6v wired in parallel = 6v, and 2 6v wired in series = 12 v, wired in series = 18
(6 + 6 =6) + (6 +6 =12) = 18
We had a tech replacing the 12v batteries in a series parallel system that made 48v, OOooPPppssss he wired it just series $100K system poof.
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07-19-2020, 08:56 PM
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#19
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,390
THOR #7035
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Yes, you CAN get 18 volts from (4) 6 volt batteries in a non-standard configuration. The two batteries in parallel provide no benefit.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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08-01-2020, 07:39 PM
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#20
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Junior Member
Brand: Thor Motor Coach
Model: 2016 ACE 30.1
State: Oregon
Posts: 29
THOR #2371
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4 Trojans in an ACE 30.1 ??
Hey RKING, I have a 2016 ACE 30.1. love it but the way, never so much as a minor problem.
I have 2 Trojans in mine and and am wondering where your 4 are located ?? I didn't think i'd have room for 4 in the battery bay ??
Thx Marc
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