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 32reviewers.
    Rated 5 out of 5★ by Easy way to check your battery and charging system Works as advertised. No more mystery how my battery is doing.Just plut it in the cigarette lighter/12VDC socket before you start the engine - then watch the voltage. Before starting the engine, it should be close to 12.8VDC. Near 12.0VDC, your battery is almost empty. When you start the engine, it should be above 14.2VDC. As you keep driving, the voltage should drop to 13.6VDC, possibly a bit less, as the battery is being charged. If you leave your car overnight and the voltage is still near 12.0VDC, a new battery will be in your future.I use this tool also for my RV to check the chassis and coach battery voltage levels so I don't have a surprise in the morning when I leave. 05/09/2012
    Rated 5 out of 5★ by An Excellent Tool I bought this volt meter to monitor the charging system on my older (1985) Honda Goldwing. The real-time digital voltage display is excellent, and told me exactly what I needed to know. The LCD display lights up enough to see it easily at night, but not so bright as to be a distraction. Now I just leave it in the socket all the time (switches off with the key).It does not come with instructions, though, which would have been helpful in determining what some of the symbols on the display are supposed to mean. A quick Google search found that the circle indicates it is reading the charging system, while the batter symbol indicates ... well ... the battery.It's an excellent tool for initial diagnostics and monitoring. 08/13/2012
    Rated 5 out of 5★ by Super Value and Accurate Bought for its two decimal readout and adjustable head. When I checked its accuracy against a $150 Fluke DIgital Multimeter, the Equus voltage was within 0.02 volts. Wow!Exceeded my expectations, and at $13 it is a great value. Every RV or Boat should have one as a primary or secondary battery monitor. 03/03/2014
    Rated 5 out of 5★ by Great little voltmeter Would not leave home without one of these in my car. Love knowing battery and alternator status versus just waiting for a red light to light up on the dashboard. This is my second one, lost my first in a move or it's in a storage box somewhere. 06/05/2014
    Rated 5 out of 5★ by Excellent tool Excellent display, day or night and ideal for monitoring battery and alternator charging status. I see a lot of people broken down on the highway and the worst thing is when they are with their families. As a mechanic, I often stop to help, especially when there are children involved and 8 out of 10 times, it's the vehicles charging system that has failed. This product easily allows me to check my vehicles charging system and this way, I can prevent stalling on the road, especially if I have my familly with me. Because I know what the charging system should read, I can fix the problem, before it every happens. Great tool to have. 08/30/2012
    Rated 5 out of 5★ by Excellent Product Easy to use, accurate readings, nice easy to read bright display with large numerals. Head tilts for easy to read angle. 03/08/2013
    Rated 5 out of 5★ by Great product and value This product makes it very easy to evaluate alternator and battery issues instantly. Large digital readout. This is my second one. My first one lasted for many years. This is an excellent diagnostic tool and the price is hard to beat. 03/13/2014
    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: 1 Year See details

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