Home » Public Forums » GMCnet » [GMCnet] Trying to charge discharged house batteries.
| [GMCnet] Trying to charge discharged house batteries. [message #348051] |
Tue, 17 September 2019 17:35  |
w schurman
Messages: 49
Registered: June 2015
Karma: 1
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Member |
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Today I went to retrieve the GMC from a storage lot where it had been
sitting for approximately two weeks. One of the air bags was very low so I
started the engine and hit the raise toggle switch for the compressor to
air up the bag and nothing happened. After looking around for the cause I
found that I had no house battery voltage, I mean none. Next I discovered
that I had inadvertently left the "systems check " toggle switch in the on
position.which completely discharged the house batteries.
Not wanting to buy new batteries (if I can help it) can they be charged up
by running the engine and hoping that the combiner will recognize the needy
house batteries and charge them ?
There is no access to electricity in the storage lot so can they be
recovered by using a Schumacher XC75 75A battery charged running it with a
400 watt inverter running off my SUV engine battery ?
The batteries while 3 years old they have never been totally discharged.
All advice is much appreciated
William S. Schurman
box 772806
Steamboat Springs, CO
80477
1978 Palm Beach
TZE168V100258
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348052 is a reply to message #348051] |
Tue, 17 September 2019 17:45  |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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If the generator will run fire it up, it will power the converter which will run the air pump and charge the house batteries.
The engine should charge the house side but I would think it would take a while.
w schurman wrote on Tue, 17 September 2019 18:35Today I went to retrieve the GMC from a storage lot where it had been
sitting for approximately two weeks. One of the air bags was very low so I
started the engine and hit the raise toggle switch for the compressor to
air up the bag and nothing happened. After looking around for the cause I
found that I had no house battery voltage, I mean none. Next I discovered
that I had inadvertently left the "systems check " toggle switch in the on
position.which completely discharged the house batteries.
Not wanting to buy new batteries (if I can help it) can they be charged up
by running the engine and hoping that the combiner will recognize the needy
house batteries and charge them ?
There is no access to electricity in the storage lot so can they be
recovered by using a Schumacher XC75 75A battery charged running it with a
400 watt inverter running off my SUV engine battery ?
The batteries while 3 years old they have never been totally discharged.
All advice is much appreciated
William S. Schurman
box 772806
Steamboat Springs, CO
80477
1978 Palm Beach
TZE168V100258
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C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348057 is a reply to message #348054] |
Tue, 17 September 2019 18:05 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Hold your boost switch down and start the generator. Then it should charge the house batteries.
Emery Stora
> On Sep 17, 2019, at 4:51 PM, w schurman via Gmclist wrote:
>
> Nothing happens when I try to start the generator.
>
> On Tue, Sep 17, 2019 at 4:46 PM Charles Boyd via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> If the generator will run fire it up, it will power the converter which
>> will run the air pump and charge the house batteries.
>> The engine should charge the house side but I would think it would take a
>> while.
>>
>>
>>
>>
>>
>> w schurman wrote on Tue, 17 September 2019 18:35
>>> Today I went to retrieve the GMC from a storage lot where it had been
>>> sitting for approximately two weeks. One of the air bags was very low so
>> I
>>> started the engine and hit the raise toggle switch for the compressor to
>>> air up the bag and nothing happened. After looking around for the cause I
>>> found that I had no house battery voltage, I mean none. Next I
>> discovered
>>> that I had inadvertently left the "systems check " toggle switch in the
>> on
>>> position.which completely discharged the house batteries.
>>> Not wanting to buy new batteries (if I can help it) can they be charged
>> up
>>> by running the engine and hoping that the combiner will recognize the
>> needy
>>> house batteries and charge them ?
>>> There is no access to electricity in the storage lot so can they be
>>> recovered by using a Schumacher XC75 75A battery charged running it with
>> a
>>> 400 watt inverter running off my SUV engine battery ?
>>> The batteries while 3 years old they have never been totally discharged.
>>> All advice is much appreciated
>>>
>>> William S. Schurman
>>> box 772806
>>> Steamboat Springs, CO
>>> 80477
>>> 1978 Palm Beach
>>> TZE168V100258
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> --
>> C. Boyd
>> 76 Crestmont
>> East Tennessee
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> William S. Schurman
> box 772806
> Steamboat Springs, CO
> 80477
> 1978 Palm Beach
> TZE168V100258
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348059 is a reply to message #348057] |
Tue, 17 September 2019 18:16 |
w schurman
Messages: 49
Registered: June 2015
Karma: 1
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Member |
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Unfortunately I am alone and the boost switch is spring loaded so i cannot
be in two places at once.
On Tue, Sep 17, 2019 at 5:05 PM Emery Stora via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Hold your boost switch down and start the generator. Then it should charge
> the house batteries.
>
> Emery Stora
>
>> On Sep 17, 2019, at 4:51 PM, w schurman via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> Nothing happens when I try to start the generator.
>>
>> On Tue, Sep 17, 2019 at 4:46 PM Charles Boyd via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> If the generator will run fire it up, it will power the converter which
>>> will run the air pump and charge the house batteries.
>>> The engine should charge the house side but I would think it would take
> a
>>> while.
>>>
>>>
>>>
>>>
>>>
>>> w schurman wrote on Tue, 17 September 2019 18:35
>>>> Today I went to retrieve the GMC from a storage lot where it had been
>>>> sitting for approximately two weeks. One of the air bags was very low
> so
>>> I
>>>> started the engine and hit the raise toggle switch for the compressor
> to
>>>> air up the bag and nothing happened. After looking around for the
> cause I
>>>> found that I had no house battery voltage, I mean none. Next I
>>> discovered
>>>> that I had inadvertently left the "systems check " toggle switch in
> the
>>> on
>>>> position.which completely discharged the house batteries.
>>>> Not wanting to buy new batteries (if I can help it) can they be charged
>>> up
>>>> by running the engine and hoping that the combiner will recognize the
>>> needy
>>>> house batteries and charge them ?
>>>> There is no access to electricity in the storage lot so can they be
>>>> recovered by using a Schumacher XC75 75A battery charged running it
> with
>>> a
>>>> 400 watt inverter running off my SUV engine battery ?
>>>> The batteries while 3 years old they have never been totally
> discharged.
>>>> All advice is much appreciated
>>>>
>>>> William S. Schurman
>>>> box 772806
>>>> Steamboat Springs, CO
>>>> 80477
>>>> 1978 Palm Beach
>>>> TZE168V100258
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>>>
>>> --
>>> C. Boyd
>>> 76 Crestmont
>>> East Tennessee
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>>
>>
>> --
>> William S. Schurman
>> box 772806
>> Steamboat Springs, CO
>> 80477
>> 1978 Palm Beach
>> TZE168V100258
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
William S. Schurman
box 772806
Steamboat Springs, CO
80477
1978 Palm Beach
TZE168V100258
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348062 is a reply to message #348051] |
Tue, 17 September 2019 18:41 |
Melbo
Messages: 144
Registered: August 2018
Location: Albuquerque NM
Karma: 0
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Senior Member |
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You may need to trick the system to see the dead battery. I have done it with a 9 volt battery and test leads. Hook it up with correct polarity and try that. Sometimes that makes the charger "see" the dead battery.
HTH
Melbo
Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348063 is a reply to message #348059] |
Tue, 17 September 2019 18:43 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Have you looked in your generator compartment? Are your house batteries
even present? Storage lots are notoriously bad for stuff to grow legs and
walk away.
Hope that is not the case.
Jim Hupy
Salem, Oregon
On Tue, Sep 17, 2019, 4:17 PM w schurman via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Unfortunately I am alone and the boost switch is spring loaded so i cannot
> be in two places at once.
>
> On Tue, Sep 17, 2019 at 5:05 PM Emery Stora via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Hold your boost switch down and start the generator. Then it should
> charge
>> the house batteries.
>>
>> Emery Stora
>>
>>> On Sep 17, 2019, at 4:51 PM, w schurman via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>
>>> Nothing happens when I try to start the generator.
>>>
>>> On Tue, Sep 17, 2019 at 4:46 PM Charles Boyd via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> If the generator will run fire it up, it will power the converter
> which
>>>> will run the air pump and charge the house batteries.
>>>> The engine should charge the house side but I would think it would
> take
>> a
>>>> while.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> w schurman wrote on Tue, 17 September 2019 18:35
>>>> > Today I went to retrieve the GMC from a storage lot where it had been
>>>> > sitting for approximately two weeks. One of the air bags was very low
>> so
>>>> I
>>>> > started the engine and hit the raise toggle switch for the compressor
>> to
>>>> > air up the bag and nothing happened. After looking around for the
>> cause I
>>>> > found that I had no house battery voltage, I mean none. Next I
>>>> discovered
>>>> > that I had inadvertently left the "systems check " toggle switch in
>> the
>>>> on
>>>> > position.which completely discharged the house batteries.
>>>> > Not wanting to buy new batteries (if I can help it) can they be
> charged
>>>> up
>>>> > by running the engine and hoping that the combiner will recognize the
>>>> needy
>>>> > house batteries and charge them ?
>>>> > There is no access to electricity in the storage lot so can they be
>>>> > recovered by using a Schumacher XC75 75A battery charged running it
>> with
>>>> a
>>>> > 400 watt inverter running off my SUV engine battery ?
>>>> > The batteries while 3 years old they have never been totally
>> discharged.
>>>> > All advice is much appreciated
>>>> >
>>>> > William S. Schurman
>>>> > box 772806
>>>> > Steamboat Springs, CO
>>>> > 80477
>>>> > 1978 Palm Beach
>>>> > TZE168V100258
>>>> > _______________________________________________
>>>> > GMCnet mailing list
>>>> > Unsubscribe or Change List Options:
>>>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>>>
>>>> --
>>>> C. Boyd
>>>> 76 Crestmont
>>>> East Tennessee
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>>
>>>
>>> --
>>> William S. Schurman
>>> box 772806
>>> Steamboat Springs, CO
>>> 80477
>>> 1978 Palm Beach
>>> TZE168V100258
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> William S. Schurman
> box 772806
> Steamboat Springs, CO
> 80477
> 1978 Palm Beach
> TZE168V100258
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348068 is a reply to message #348059] |
Tue, 17 September 2019 19:11 |
Olly Schmidt
Messages: 1265
Registered: February 2014
Location: Germany and Scottsville, ...
Karma: 8
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Senior Member |
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On 17.09.19 20:16, w schurman via Gmclist wrote:
> Unfortunately I am alone and the boost switch is spring loaded so i cannot
> be in two places at once.
No need. Get a screwdriver, stick into the booth switch to hold it, go
to the generator start switch. Done.
BTDT.
--
Best regards
Peer Oliver "Olly" Schmidt
PGP KeyID: 0x4196BF22
'76a 26' Eleganza II - Virginia, US
'73 23' Sequoia - Schleswig-Holstein, Germany
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Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348073 is a reply to message #348059] |
Wed, 18 September 2019 00:09 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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I had that problem one time so I got a piece of wood that would prop between the switch and the front of the seat. I moved the seat forward to keep pressure on the switch.
You can also run a jumper wire from the positive of the battery to one side of the boost solenoid and it will keep the boost engaged.
Emery Stora
> On Sep 17, 2019, at 5:16 PM, w schurman via Gmclist wrote:
>
> Unfortunately I am alone and the boost switch is spring loaded so i cannot
> be in two places at once.
>
> On Tue, Sep 17, 2019 at 5:05 PM Emery Stora via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Hold your boost switch down and start the generator. Then it should charge
>> the house batteries.
>>
>> Emery Stora
>>
>>> On Sep 17, 2019, at 4:51 PM, w schurman via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>
>>> Nothing happens when I try to start the generator.
>>>
>>> On Tue, Sep 17, 2019 at 4:46 PM Charles Boyd via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> If the generator will run fire it up, it will power the converter which
>>>> will run the air pump and charge the house batteries.
>>>> The engine should charge the house side but I would think it would take
>> a
>>>> while.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> w schurman wrote on Tue, 17 September 2019 18:35
>>>> > Today I went to retrieve the GMC from a storage lot where it had been
>>>> > sitting for approximately two weeks. One of the air bags was very low
>> so
>>>> I
>>>> > started the engine and hit the raise toggle switch for the compressor
>> to
>>>> > air up the bag and nothing happened. After looking around for the
>> cause I
>>>> > found that I had no house battery voltage, I mean none. Next I
>>>> discovered
>>>> > that I had inadvertently left the "systems check " toggle switch in
>> the
>>>> on
>>>> > position.which completely discharged the house batteries.
>>>> > Not wanting to buy new batteries (if I can help it) can they be charged
>>>> up
>>>> > by running the engine and hoping that the combiner will recognize the
>>>> needy
>>>> > house batteries and charge them ?
>>>> > There is no access to electricity in the storage lot so can they be
>>>> > recovered by using a Schumacher XC75 75A battery charged running it
>> with
>>>> a
>>>> > 400 watt inverter running off my SUV engine battery ?
>>>> > The batteries while 3 years old they have never been totally
>> discharged.
>>>> > All advice is much appreciated
>>>> >
>>>> > William S. Schurman
>>>> > box 772806
>>>> > Steamboat Springs, CO
>>>> > 80477
>>>> > 1978 Palm Beach
>>>> > TZE168V100258
>>>> > _______________________________________________
>>>> > GMCnet mailing list
>>>> > Unsubscribe or Change List Options:
>>>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>>>
>>>> --
>>>> C. Boyd
>>>> 76 Crestmont
>>>> East Tennessee
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>>
>>>
>>> --
>>> William S. Schurman
>>> box 772806
>>> Steamboat Springs, CO
>>> 80477
>>> 1978 Palm Beach
>>> TZE168V100258
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> William S. Schurman
> box 772806
> Steamboat Springs, CO
> 80477
> 1978 Palm Beach
> TZE168V100258
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] Trying to charge discharged house batteries. [message #348074 is a reply to message #348067] |
Wed, 18 September 2019 05:11 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
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pjburt wrote on Tue, 17 September 2019 19:17Why don't you jump the generator with your SUV?
I read every one of these posts looking to see if any one suggested this. Simply throw a set of jumper cables on the house battery, if someone has not stolen it. If the house battery is gone or completely dead, or has a dirty battery cable, the boost will not work because the power for the boost solenoid comes from the house battery and NOT the engine battery.
There are several other ways to do this
1. a big thick battery cable jumper across the two big terminals of the boost relay.
2. A $1.00 combiner (2 alligator clips and a 16 gauge wire) connected from engine battery positive terminal on the boost solenoid to to the boost relay coil terminal.
3. start the main engine and let it run to charge the house battery for a few minutes. Then press boost with the engine still running. Jam a piece of thick folded paper or tooth pick or Popsicle stick in the side of the boost rocker switch to hold it on. Any of those will work.
coil.
Good Luck
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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