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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Mar 2010 Posts: 843 Shop Shark | | Shop Shark Joined: Mar 2010 Posts: 843 | Tony, There is a product made for RV applications that will do exactly what you want. It's called a "dual battery isolator". https://truck-hardware.orrorr.com/viewitems/category-2350/the-sure-power-battery-isolator-It keeps the battery that is being heavily used from draining the starting battery and when the engine is started the alternator charge is sent to each battery based on its state of charge. I've had one of these on a van I use to tow a small travel trailer for decades and it's worked perfectly.
Last edited by yar; 11/22/2018 3:28 AM.
Ray
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