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auto start on generator

What would be the disadvantage of leaving generator on auto start to keep batteries charge up when motor home is setting for a month or less. I was thinking it would use some fuel, but it would make generator get some use and get the electrical cord out of my way while doing yard work.

Larry Bradley
98 U270
Grand Cherokee
Larry Bradley
SOB
former 1998 U270
Build 5251
Jeep Grand Cherokee

Re: auto start on generator

Reply #1 –
Quote from: Larry Bradley –
What would be the disadvantage of leaving generator on auto start to keep batteries charge up when motor home is setting for a month or less. I was thinking it would use some fuel, but it would make generator get some use and get the electrical cord out of my way while doing yard work.

The auto gen start would come on when the batteries got down to about 12.2 vdc.
The gen would then run 4-5 hours.
Probably more that you want just to exercise the gen at the price of diesel right now.
The selected media item is not currently available.Barry BEAM #16014
2003 U320 40' AGDS
Beamalarm, Foretravel technical help and specifications
"Whatever the mind can conceive and believe, it can achieve"

Re: auto start on generator

Reply #2 –
So the auto start will shut it off too?  What triggers that?
1996 U270
Build #4846

Re: auto start on generator

Reply #3 –
Quote from: Gayland Baasch –
So the auto start will shut it off too?  What triggers that?
On our BCM-12 auto Gen start. It is programmable for how long to run after auto start or until voltage is reached.
The selected media item is not currently available.Barry BEAM #16014
2003 U320 40' AGDS
Beamalarm, Foretravel technical help and specifications
"Whatever the mind can conceive and believe, it can achieve"

Re: auto start on generator

Reply #4 –
I think you can adjust all of the auto start units.  I had my 99 adjusted with a multi meter to the electrode on the black board under the center of the dash.  You turned a screw and saw the numbers move on the multimeter.  That adjusted the start and stop voltage but not the time.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: auto start on generator

Reply #5 –
The BCM-12 is fully adjustable, start voltage, finish voltage, and run time.  Very easy if you have a good meter and can understrand the manual.  Barry has a copy of the manual.

Re: auto start on generator

Reply #6 –
According to Dynagen its a discontinued product.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: auto start on generator

Reply #7 –
Yep, They discontinued the BCM about the same time Silverleaf started offering it.  A few years ago.
BUT, if you have one, you can still check and adjust it to your liking. ;D

Re: auto start on generator

Reply #8 –
For those contemplating adding an autostart, the Magnum is avail at this site for $244, free shipping. Everywhere else I've looked, its $263 (up).
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT