About this item
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:
|Battery Type:||Does Not Contain a Battery|
|Shipping Weight (in pounds):||0.3|
|Product in Inches (L x W x H):||4.25 x 1.5 x 10.25|
|Assembled in Country of Origin:||Imported|
|Origin of Components:||Imported|
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- Well sort of. If you become familiar with the normal voltage drop with engine off. you can notice a draw when you step on brake or leave headlights on. There are better methods and tools to find a parasitic power draw. In a pinch it could be done.by poolguru1/3/2015Was this answer helpful? (0) (0)Was this answer helpful?
- All this battery monitor does is measure and display the voltage. It does it three ways: with a digital readout, "idiot" lights, and a voltage indicator. All batteries lose voltage over time, but a significant loss of voltage could be indicated by regular monitoring of the system voltage.by b6fischer3/6/2014Was this answer helpful? (0) (0)Was this answer helpful?
- I agree with those who answered "yes, but not directly". And probably not right away. Depending on the current draw of whatever is draining your battery, it could take from a few minutes to a few days for it to show up. But, if there is a drain of any significance, it will show up in the form of reduced battery voltage over time. Note: that test must be done when the engine is not running. If you start the engine, even briefly, the alternator will at least partially recharge the battery and you will not get an accurate reading. I used a similar battery/charging system tester to help determine that my mother in law had a slow drain on her battery that was causing the voltage to drop significantly when the car sat for 2 or 3 days. The problem turned out to be the glove compartment light that was not turning off.by Richard029/15/2013Was this answer helpful? (0) (0)Was this answer helpful?
- No. This is a volt meter, and will only read the voltage present from the battery and/or the charging system. To detect excessive power drain, you will need to use an ampere meter to read current draw.by PJSprog8/14/2012Was this answer helpful? (0) (0)Was this answer helpful?
- Sorry for the delay in giving an answer to you and hope you have (by now) found your problem. BUT, if not... to locate battery drain it is better to use an inline amp meter to check for what are called "phantom loads". These can be as simple as the radio memory or clock circuits and as complex as a stuck relay or a wire that has pinched and is bleeding to ground (hopefully not the latter as they are usually difficult to find). Anyway once you have a reading on you amp meter you can then selectively disconnect items to see if the draw diminishes or disappears - do this by fuse pulling or physical wire disconnection (hopefully through plug connector or spade terminals). GOOD LUCK !!by MarineChief9/15/2013Was this answer helpful? (3) (0)Was this answer helpful?
- Yes It Show Low Voltage Before You Start Car.by ModSquadApproved8/4/2012Was this answer helpful? (0) (1)Was this answer helpful?
- Yes, by monitoring the voltage over time you would see a voltage drop. This monitors voltage to .00 volts so a drain will so up almost immediately. You will need to wait for 10 to 20 minutes with the battery at rest before testing.by rtlrp1211/25/2012Was this answer helpful? (2) (0)Was this answer helpful?
- I believe it would because it will display a decrease in the available voltage.by santeejj12/13/2010Was this answer helpful? (0) (0)Was this answer helpful?
- Not directly. But if you have a power drain, your battery voltage will fall over time when the engine is not running. This device will let you observe the voltage and determine if it is falling. Basically, if your car can sit overnight or for a couple of days and the device is still indicating a full battery, you probably do not have a significant drain.by Barry39/15/2013Was this answer helpful? (3) (0)Was this answer helpful?
- Also check your alternator and voltage regulatorby cloudcroft9/5/2014Was this answer helpful? (0) (0)Was this answer helpful?
- With the engine on you are reading the alternator voltage. If you want to test battery voltage turn the engine off. The half way point means not too high and not too low.by poolguru7/10/2014Was this answer helpful? (0) (0)Was this answer helpful?
- If your reading was 14 Volts, then the battery monitor should have had displayed a small circle with arrow icon showing above the voltage reading. This indicates it is in Charge mode and the indicator on the right side of the screen has nothing to do with the battery. If you were to turn the car engine off and then turn the ignition to the on position (but not starting the car), then you would see a little battery icon showing above the voltage read-out, and your voltage would likely show 12.6 or so volts. Now the indicator on the right would help you "see" the state of your battery's charge.by b6fischer6/1/2015Was this answer helpful? (1) (0)Was this answer helpful?
- I think it could be the alternator, just check it, u don't have anything to loose.by memua6/28/2012Was this answer helpful? (0) (0)Was this answer helpful?
- With the engine running, the charge indicator indicates alternator output voltage, not battery voltage. That is why you are reading 14 volts or more. The graph in the middle of the range means not too low, not too high. With the engine off, battery voltage is being read and a reading of 12.6 volts should show a full or nearly full battery on the graph, which is good. (See the package illustration.)by Doneright1/17/2014Was this answer helpful? (6) (0)Was this answer helpful?
Q. Can any body tell me what do the symbols on the screen of the indicator mean? There is one of a battery that is coming on and off and one of a circle
- The battery means voltage with engine off, so you can tell if the battery is charged up. The circle denotes voltage with engine on, so you can gauge alternator health.by poolguru4/17/2015Was this answer helpful? (1) (0)Was this answer helpful?
- The meter has two modes for the colored lights at the bottom: one for battery voltage and one for charging voltage. The circle with arrows shows when the meter is in "Charging" mode. The image of the batteries shows when the meter is in Battery mode. Green light shines in Charge mode between 13.3 & 14.4 volts. Green light shines in Battery mode at 12.6 volts and over.by b6fischer3/29/2015Was this answer helpful? (1) (1)Was this answer helpful?
- This has two modes. One mode is active when the engine is running and it is testing your alternator output. That is indicated by the symbol with two arrows. The other mode is active when your engine is stopped and it is testing the voltage of your battery. That is indicated by the battery symbol. It switches automatically between modes. Note that some cars have an alternator that drops its output at times to save gasoline. This device will give you a red warning light at those times and you might think your alternator is failing. Turn on your ventilation fan and you will see the alternator output return to normal.by Barry34/17/2015Was this answer helpful? (15) (0)Was this answer helpful?
- I believe that the battery symbol indicates that battery voltage is being read with the engine off, and the circle with arrows indicates that the engine is running and the alternator voltage is being read.by Doneright4/17/2015Was this answer helpful? (6) (0)Was this answer helpful?