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| Brand: Equus
Category: Automotive Parts And Accessories
List Price: $25.57
Buy New: $12.95
You Save: $12.62 (49%)
New (3) from $12.95
Avg. Customer Rating:  13 reviews
Sales Rank: 136
Media: Misc.
Shipping Weight (lbs): 1
Dimensions (in): 10 x 1 x 6.5
MPN: 3721
Model: 3721
UPC: 042173037216
EAN: 0042173037216
ASIN: B000EVWDU0
Availability: Usually ships in 1-2 business days
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| Customer Reviews:
12 Volt battery Monitor April 16, 2008
3 out of 3 found this review helpful
Seemingly just another auto gadget fortunately the Equus 3721 is more sophisticated than its ponderous description. A breeze to connect to any car's 12 Volt electrical system. Simply push into the lighter socket or an auxiliary power outlet now found in many newer vehicles.
With the engine running the instrument constantly displays battery condition with an LED light; amber when marginal, red if the battery is discharging. A green light indicates a correctly functioning electrical system. All is well with both battery and, most importantly, the alternator.
The Equus is also an accurate voltmeter. Digital read-outs give exact voltage in the electrical system. Potential alternator problems or a failing battery will be indicated by below normal voltages, plus an amber or red light. Extra information is a battery icon graphically showing total battery charge. Tending towards erratic read-outs, and therefore unreliability, it is not the unit's best feature.
Equus's instruction card is easy to understand. The unit is well made, sturdy, easy to connect and to transfer to any 12 volt system not having its own voltmeter. Also, as a supplemental monitor in an RV, or a bigger boat with a remote 12 Volt outlet in a sleeping area far from the main instrument panel, overall battery condition condition can be monitored while camping or at anchor.
Good value for money; very useful. From personal use, recommended.
 good product April 11, 2008
3 out of 3 found this review helpful
this product does exactly what I wanted. It is cheap, handy and does not require a technician to install- just plug it into your cigarette lighter.
I had alternator and battery problems in the past so I always want to know what is happening with these 2 areas.
I can reccommend this product to anyone whose vehicle does not have a built in voltmeter
Great value April 5, 2008
3 out of 3 found this review helpful
This little device is a great value and time saver. Just plug it in and tell instantly if your battery and charging system are operating properly. No more playing around under the hood with your multi-meter. I have several items from Equus and I'm a fan of the company. They produce quality products that work great.
Does the job February 20, 2008
4 out of 4 found this review helpful
just got the monitor from amazon based on the reviews here. the actual device is slightly different from it looks in the picture, with rounder edges. i guess the new product has been revised. also the protective plastic film is extremeply easy to peel off, a bit too easy i would say. or it might have something to do with the weather. here in singapore it's 30C all the time. the device has good build quality. the monitor can show two different tiny icons above voltage reading, under the battery and charging modes. the LCD is clear with bright blue backlight. basically it doesnt cost arm or leg but does all i expected. i will leave it plug in all the time in my car. i am sure i will be alerted by the unusual low voltage one day to realise the time to replace my battery. that will be the time i can recover the cost of this product by saving the expensive recovery service.
Battery monitor August 25, 2007
3 out of 3 found this review helpful
Very useful device to monitor voltage and charging. I like it. The plastic overlay was difficult to remove. I just wished I had one before my alternator died on me. I could have had the alternator DXed before it went dead by having a voltage gauge or monitor.
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