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Battery Buddy:
Disconnects (Saves) Battery at Low Voltage

Alex Steele
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Several weeks ago I read about a device called a Battery Buddy, and I believe it was in your column. The device in question attaches to the battery cable, and when the battery voltage drops to a predetermined level it shuts off all current to the vehicle.


I spend part of the year in Minnesota and part of the year in California. I leave a car at each end, and have trouble with the battery going dead over time. I now disconnect the cables when I leave, but the device mentioned above would be much simpler, especially if someone had to start the car to move it while I am away.


I would certainly appreciate any information you might have on where the Battery Buddy can be purchased.




There are several different manufacturers that produce items for this same basic purpose. That is to break the connection to the vehicle's battery when battery voltage drops below a certain point in order to prevent a no start condition. This can happen due to a number of reasons, such as leaving your lights on, a door ajar, sitting for long periods of time, or even a power draining short (or electrical draw).


I'm going to suggest looking into the "Priority-Start" Automatic Battery Protection Device. Reports show its electronic design to be innovative, and of higher quality than other versions. The unit will disconnect the vehicle's battery when battery voltage drops below 12 volts. Then it will automatically reconnect the battery and get you on your way by simply switching on the ignition. In other words, you don't have to do anything!


The unit requires a very simple installation and goes for about $64.95. You can order one by calling BLI International at 1-800-780-8276. They also make a marine and a 24-volt version for a few dollars more.

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leon reed
26 Jan 2018, 15:45
ron I had one like that but it got away from me, I would like to have one like that the battery buddy you just push the button where can I find one
19 Apr 2017, 06:00
RE:Mark Bell, The best I could find is a battery buddy that can charge up to four battery's at once. This is the website below. https://www.extrememax.com/product-p/1229.4023.htm
mark bell
19 Apr 2017, 01:02
I have a diesel dual battery 2004 Dodge Ram. I also have a V8 Jeep with dual batteries. any battery buddy for both vehicles?

Thanks, Mark
15 Oct 2014, 20:26
RE: Xavier Ramirez: You can find similar items a Amazon.com/battery buddy
Xavier Ramirez
07 Aug 2014, 15:44
I had a battery buddy several years ago and let it go when i sold the van. Now i need another one. The problem is i can't find the brand Battery Buddy. if anyone can help, that would be great. thankyou.
16 Aug 2013, 20:56
@Ron who asked: "What do I do with the third wire, the small one?"

I realize this is an old thread, but as Admin suggested, the Battery Buddy owners manual says: "Secure [the small wire, which Battery Buddy calls the ground terminal] to bolt at vehicle ground point such as a metal fender, a metal battery tie down, or under the nut of the Neg (-) battery cable. Battery Buddy will not function without proper ground connection. (Note: Use a knife or sandpaper to make sure grounding surface is free of paint and dirt. Plastic, rubber, and/or painted metal surfaces in contact with Ground Terminal prevent proper ground connection.)
10 Feb 2013, 11:06
Search for Priority Start system. It's a universal device which can be installed on your Chevy van.
08 Feb 2013, 13:54
Do you sell battery buddy's for Chevy g20 gladiators
15 Nov 2012, 08:50
I believe that's a ground wire to be connected to the negative battery post or any engine/chassis ground. But you should do a search on the manufacture for instructions to be sure.
14 Nov 2012, 22:19
I have a Battery Buddy automatic disconnect. It has been around for quite a while on the shelf. It does not have an automatic reset. It has a button to push to reset.

I am trying to install this unit but don't have the instructions. I see how to hook up the battery cables, but what do I do with the third wire, the small one? Help, please!

08 Nov 2012, 11:54
I have had a Battery Buddy for about 10 yrs now. I have never replaced my car battery. Not to say the Battery Buddy enhances the battery, but it prevents it from ever going dead! I have never had to jump my car since I've had it. 1 time dead battery = 1/2 the life! Buy one! It is a very useful tool and a time saver at the very least!
29 Jan 2012, 10:33
Google it. They're all over.
Stefan Rosik
29 Jan 2012, 07:16

Can you drop me a note where to get? Mine went bad last night, and my Chevy needs a new one urgently

21 Jan 2012, 12:02
I bought a battery buddy and had it installed a year ago. Today I am stranded as my battery buddy did not work. Warranties are worthless. I have been online looking for ways to report my non-functioning battery buddy and all I found were these sites selling the battery buddy.


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