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Topic: Shore power with coach batteries disconnected? (Read 6 times) previous topic - next topic
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Shore power with coach batteries disconnected?
Yahoo Message Number: 88373
A question for anyone who knows. Can you connect to and use shore power if the coach batteries are either absent or disconnected, say via one of the battery disconnect switches that LD supplies?

I'd like to have power connected while the LD is stored at home, to run a heater or whatever, but after doing some research I've concluded my new coach batteries might be better maintained on a Deltran Battery Tender that I have or by simply being disconnected most of the time and then occasionally charged.

Terry

2003 26.5' RB
Gardnerville, NV
Terry
2003 26.5'RB
Gardnerville, NV
Re: Shore power with coach batteries disconnected?
Reply #1 –
Yahoo Message Number: 88375
On Jan 15, 2008, at 12:13 AM, tlburnes wrote:

Quote
A question for anyone who knows. Can you connect to and use shore power if the coach batteries are either absent or disconnected, say via one of the battery disconnect switches that LD supplies?
Do you have solar panels?  If you do, be sure to disconnect them before disconnecting the batteries. But shore power by itself should not cause a problem.

-Dave
Re: Shore power with coach batteries disconnected?
Reply #2 –
Yahoo Message Number: 88382
Quote
A question for anyone who knows. Can you connect to and use shore power if the coach batteries are either absent or disconnected,
...snip...

I did that in my LD when I was rebuilding the battery box.  The transfer switch does not appear to need any 12 VDC, just 110 VAC.

Safe travels, Dave N 2000 RB Albuquerque
Dave

2017 TK
Re: Shore power with coach batteries disconnected?
Reply #3 –
Yahoo Message Number: 88386
Quote
Do you have solar panels? If you do, be sure to disconnect them before disconnecting the batteries
I'm not questioning the wisdom, but why do we need to disconnect the solar panels when the batteries are disconnected?? Indio Todd

Start the year off right.  Easy ways to stay in shape.
http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489

[Non-text portions of this message have been removed]
Re: Shore power with coach batteries disconnected?
Reply #4 –
Yahoo Message Number: 88387
On Jan 15, 2008, at 9:54 AM,

Quote
I'm not questioning the wisdom, but why do we need to disconnect the solar panels when the batteries are disconnected?? Indio Todd
Because the batteries are the primary load for the solar system keeping the voltage in check.  In bright sunshine, with no load, i.e. the batteries disconnected, the solar system voltage can easily rise to upwards of 25 volts, likely damaging anything still turned on, things such as the TV, stereo, propane detector, and anything plugged in to the 12v accessory outlets, etc.

-Dave '06 MB, Indianapolis
Re: Shore power with coach batteries disconnected?
Reply #5 –
Yahoo Message Number: 88391
Quote
Because the batteries are the primary load for the solar system keeping the voltage in check.
Hey Dave Thanks for the explanation.
I thought the solar panel output went directly to the batteries for charging purposes only, and when the batteries are disconnected so are the panels.
If that was the case there would be no way the solar output could get to my TV. I don't see why it would matter anyway if the TV is off. I will, however, defer to your expertise as I must be missing an important step in the solar loop, and turning off the panels is no big deal. Better safe than sorry! Todd

Start the year off right.  Easy ways to stay in shape.
 http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489

[Non-text portions of this message have been removed]
 
Re: Shore power with coach batteries disconnected?
Reply #6 –
Yahoo Message Number: 88424
On Jan 15, 2008, at 11:48 AM,

Quote
Hey Dave Thanks for the explanation.
I thought the solar panel output went directly to the batteries for charging purposes only, and when the batteries are disconnected so are the panels.
Unfortunately that is not quite true. THe solar panels (actually the output of the solar controller) is tied in to the 12 volt system cabling upstream from the batteries a distance.  When you disconnect the batteries, the solar system remains connected to everything else.

Quote
I don't see why it would matter anyway if the TV is off.
Like most electronic devices these days, they are never truly off unless you lift the power leads from the source. Memories are maintained, clocks continue to run (dash radio) and whatever is connected to any of the accessory outlets remain powered.  One of the advantages of the HPV-22B controller is it has an on/off switch.  To disable the standard HPV-22, you have to open the panel near the floor and pull the fuse.  Not difficult, but easy to forget.

-Dave '06 MB, Indianapolis