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Universal 12v Digital Volt Meter with Car Adapter UPGvoltminder

$30.00 - No Tax
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Keeps you informed of your battery status at all times!

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Product InformationStore Part Number: UPGvoltminder


Low Voltage Warning Device for 12 volt battery systems. Prevent low or dead batteries by installing Volt Minder which has both LCD voltage read out and audible alarm. Customer adjustable low voltage setting, with a range of 10.5 to 13.8 volts, and audible on and off switch. Automatically monitors charging system and detects battery loads.

Ideal battery protection for RV, Marine, Big Rigs or anyplace battery voltage may be critical to operation of starting or auxiliary power systems.
We tested many voltage monitors, and this unit was the most accurate.


  • Prevent battery failure and jump starts
  • Loud audible alarm with on and off switch
  • Adjustable low voltage alarm threshold
  • Illuminated LCD voltage read out
  • Reads charging system voltage and detects battery loads
  • Volt Minder contains 6 foot power cord and mounting kit
  • 90 Day Warranty


*Flat Rate shipping is for the lower 48 states only.

Tech Specs

  • Dimensions (LxWxH): 4 x 2 3⁄4 x 1 in
  • Weight: .5 lb
  • Manufacturer: Universal Power Group
  • Shipping Weight (lb.): 1
  • Manufacturer Part #: UPGvoltminder

Reviews and Ratings

4.75 Average
5 Stars 3
4 Stars 1
3 Stars 0
2 Stars 0
1 Stars 0
Rated 4.75/5 Stars from 4 customer reviews.

Do you own the UPGvoltminder? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Volt Minder
Pros: Nice. Simple. Convenient.
Cons: If the alarm is activated and the unit loses power, then when power is restored, the alarm is not automatically reactivated. It must than be manually reactivated.
Is this review helpful?
Written by JoeD on Jun 08, 2012. Ownership: Use regularly. Knowledge Level: Genius is my way of life — (95 of 178 customers found this review helpful
Bob Zuk
Pros: Very good product. I use it for my batteries on my backup power system and it gives me fast and accurate readings. I have used it for over 3 years. The adjustable audible alarm is great to keep me from over draing the batteries. For the price and features, it can not be beat. I am buying 2 more today for my portable power packs.
Cons: None
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Written by Offthegridzone on Nov 07, 2011. Ownership: Use regularly. Knowledge Level: AC/DC is more than a band — (109 of 190 customers found this review helpful
12 Volt Minder UPG 71730
Pros: i traded for a new peterbilt and forgot to remove the Minder i'd had for 10 yrs so I was pleased to find you carried them! it is great for guys like me who fall asleep while watching tv at nite with the truck off and alerts u if alternator fails while driving-designed by a trucker for truckers!! would be lost without it!
Cons: non!
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Written by bushpilot on Nov 16, 2011. Ownership: Use regularly. Knowledge Level: AC/DC is more than a band — (94 of 175 customers found this review helpful
Whaddya know
Pros: The unit is simple and it works by simply plugging it into the cigarette port. The voltage readout is instant and in real time. This would be great for trailers/RVs in which everything runs off the house batteries.
Cons: It beeps every time you start the car, which gets a little annoying.
Other Thoughts: Using this volt meter, I was able to figure out that my battery wasn't charging to full charge every time I drove. Also, the alternator wasn't putting out the voltage it should. It helped me diagnose the electrical problems in my Chevy Tracker.
Is this review helpful?
Written by James Art Ville on Aug 01, 2012. Ownership: Use regularly. Knowledge Level: AC/DC is more than a band — (95 of 175 customers found this review helpful

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