Equus Innova 3721 Battery and Charging System Monitor

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Equus Innova 3721 Battery and Charging System Monitor

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List Price: $16.99
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Item Description

The Equus Innova 3721 Battery charging system monitor keeps track of your car's battery to help you avoid car break downs due to a low battery. This 12-volt battery monitor is easy to use. It plugs into your cigarette lighter outlet to help you to monitor the battery and the charging system voltage. This car battery monitor features an LCD display that shows the voltage in a bar graph. It has color-coded LEDs that indicate the battery's status. A pivoting head allows you to view the battery charging system monitor from any direction.

Equus Innova 3721 Battery and Charging System Monitor:
  • Designed for use with 12V outlet
  • Monitors battery and charging system voltage
  • LCD displays measured voltage with bar graph
  • Color-coded LEDs identify battery's charge status
  • Head pivots for easy viewing


    Battery Type: Does Not Contain a Battery
    Model No.: 3721
    Shipping Weight (in pounds): 0.3
    Product in Inches (L x W x H): 4.25 x 1.5 x 10.25
    Walmart No.: 551722731

    Customer Product Reviews

    Rated 4.5 out of 5★ by 34reviewers.
    Rated 5 out of 5★ by I purchased this to monitor my 12v portable power packs I use for camping. I'm a retired Master auto technician and I used a $3000 digital lab scope to test the accuracy of the monitor. I was very surprised at the accuracy. It was right in line with the expensive unit. 02/22/2011
    Rated 5 out of 5★ by Easy & accurate Easy product to use and provides very accurate readings. Served my purposes completely 12/13/2010
    Rated 5 out of 5★ by A TRUE voltage monitor I bought this SPECIFICALLY because it indicated "hundredths" of volt. In this way you can really see the condition of your 12v battery & charge system. I feel that using only the single decimal does not give sufficient charge indication as 12.7v is indicative of full (100%) charge and 12.2v is already under 50% - the extra decimal digit just gives better info.Value has four stars only because I did find this in the local store (afterward) at a lower price even though searching online claimed the local to have none when I made my initial check. I suggest actually checking the physical store prior to ordering online if at all possible - you may save a few bucks and get it quicker. 06/09/2011
    Rated 5 out of 5★ by A great product This voltmeter monitors both battery voltage (engine off) and alternator output voltage (engine running). Indicators include colored LED's, a vertical bar graph and a large digital display reading in hundreds of a volt. The device is smart enough to know whether or not the engine is running so the "condition" readings are appropriate. The head is adjustable for the best viewing angle. I leave mine plugged in as a permanent display. I'm really happy with the product. It arrived at my local WalMart sooner than promised. 10/17/2011
    Rated 5 out of 5★ by My volt meter in my 03 Silverado 1500 HD quit working about two years ago, I checked battery and alternator voltage peoridocally with my multimeter, but it was unerving to be miles from home and not have constant monitoring as I pull a 25' fith wheel camper, now in excess of 90,ooo miles across the US and Canada. (yes ninty housand) tip-use 3rd gear not drive.I was doing a intrnet search lookind for a better way than replacing the instrument cluster, when I saw this device which plugs in the lighter receptical, reading the instructions, specifications and reviews, this shoud work great. and it does, very happy with this product. ordered on line from Wallmart, it arrived at my local store in bout one week. 07/18/2013
    Rated 4 out of 5★ by Just What I Need What We All Need To Be Aware Of A Problem Before It Gets Bad. Very Accurate Reading Lights Up In Darkness. Aloha;Mod Squad 04/15/2011
    Rated 5 out of 5★ by Super Battery Monitor We purchased two of these little devices. We had one previously purchased in the store and when we wanted another we were disappointed that only the less sensitive model was being offered in the store. We were delighted to find that the increased sensitivity model could be ordered online and then conveniently picked up at the store. 08/01/2011
    Rated 5 out of 5★ by Great real-time monitor for elec/charging system Plugs in and tells me precisely what the battery charge and alternator activity are. Acts like the old-time dash amp meter used to (don't know why the manufacturers eliminated that). Switch from car to car to check charging situation. It seems very accurate. 04/10/2014
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    Product Warranty and Service Plan Options

    Product warranty: 1 Year See details

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