Equus 3721 Battery and Charging System Monitor Review
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I was skeptical that something this inexpensive could be so useful. But once you plug this tester into your cigarette lighter, you’ll see this this little device is a lot more intelligent than you might think.
With the car not running, the tester shows your battery voltage and status. A little battery icon tells you that the tester knows the car is not running, and that the LCD is displaying Battery Status. You can see the exact voltage on the LCD screen. Novices can simply look at the red, yellow, or green LEDs to quickly determine the health of your battery. To put your mind at ease, a little bar graph shows you the relative battery voltage.
Once you start the car, the little battery icon goes out and you see a little charging circle icon displayed – this tells you the device knows the car is running and that it is now displaying Charging Status. After you let the engine warm up, hold the engine at about 2500 RPM. The neat little LCD display now shows you the alternator’s charging voltage. A green LED will satisfy you that the charging system is healthy, a yellow will caution you that your charging system might need some maintenance, and finally the red LED alerts you that your battery is being either under- or over-charged. The LCD display and graph indicates the exact nature of any problems.
IT’S VERY IMPORTANT to note that your cigarette lighter socket must be COMPLETELY CLEAN for this tester to be happy and useful. Clean out the socket good with a plastic (NON-METALLIC!) brush, then blow any debris with a quick blast from a can of compressed air (blowing from your mouth is NOT enough). Proper operation of this tester will display the LCD voltage being stable, or moving either consistently up OR consistently down. If the voltage fluctuates erratically, or if the devices turns itself on and off, clean the cigarette lighter socket, then re-seat the tester firmly in the socket. If the device still behaves erratically, that’s a sign that your battery terminals may be loose.
Most garages will charge you a pop for what this wonderful tester does for a few bucks in three minutes. Someone with advanced knowledge of cars can have way too much fun with this tester.
Equus 3721 Battery and Charging System Monitor Feature
- Displays the condition of the battery and charging system
- Designed for 12-volt negative ground systems
- Protects the engine computer and 12-volt accessories from surges
- Easily plugs into a cigarette lighter or power receptacle
- Head pivots for easy viewing and angle adjustment
Equus 3721 Battery and Charging System Monitor Overview
This battery and charging system monitor displays the condition of your battery and charging system instantly. It protects the engine computer and 12-volt accessories from damaging surges when jump starting or recharging. You can easily plug into the vehicle’s cigarette lighter or power receptacle to monitor battery and charging system voltage. It has an LCD screen which displays the measured voltage with a bar graph to indicate battery charge level and it also has color-coded LEDs which quickly identify the battery’s charge status. The head pivots for easy viewing and angle adjustment.
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*** Product Information and Prices Stored: Mar 07, 2010 19:33:05
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