| Re: [GMCnet] Vehicle Dead Battery Brain Saver Type I Bronze [message #327074 is a reply to message #327073] |
Wed, 13 December 2017 19:47   |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
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Senior Member |
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Rob,
I build a similar unit to shut down commercial two-way radios we install into vehicles and equipment. The customers like to have the radios ON all day, but don't like the dead batteries if the radio was not turned OFF over a weekend.
Its a relatively simple device that monitors the vehicle voltage. When it detects the engine is turned OFF, it starts a timer which leaves the radio ON for a preset time, or until the battery voltage drops to a preset level which is dependent on the ambient temperature (for winter time). I've sold a few to GMCer's.
I have one in-line to the house 12V fuse panel in case I leave some turned ON, it will power OFF before the battery voltage drops below a set level.
http://www.gmcmhphotos.com/photos/electrical/p28712-12-volt-accessory-power-down-timer.html
The unit you refer to senses battery voltage and disconnects if it drops below a set level. You must then manually press a button on the unit to reset it. Its a great idea.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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