Innova 3721 Battery and Charging System Monitor
Innova 3721 Battery and Charging System Monitor
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Equus

Innova 3721 Battery and Charging System Monitor

93 ratings

Key item features

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
Current price is $27.32
Price when purchased online
  • Free shipping

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Ships to
Arrives by Wed, Sep 2
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Sold and shipped by JBTools
4.425884460367219 out of 5 stars
4.425884460367219 stars out of 5, based on 2233 seller reviews(4.4)
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About this item

Product details

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Customer ratings & reviews

4.6 out of 5 stars
stars
93 ratings77 reviews
How item rating is calculated
  1. 5 stars75% (70)
  2. 4 stars13% (12)
  3. 3 stars4% (4)
  4. 2 stars2% (2)
  5. 1 star5% (5)

Reviews summary

Pros

  • : Easy to understand and navigate the product's features.
  • : Can be used in multiple vehicles.
  • : Offers similar quality at a lower cost.

Neutral

  • : Provides accurate readings at times, but can be inconsistent under varying loads.

Cons

  • : Does not provide constant voltage monitoring, requiring manual checks.
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Showing 1-3 of 77 reviews

May 4, 2026
Reviewer name: Robert
Sold and shipped byJ and B Tool Sales
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Top notch product

Helpful?5WNV91SDOBS215137663
Dec 19, 2023
Reviewer name: Richard
Sold byJ and B Tool Sales
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Handy battery and alternator check

Handy battery and alternator check that can lead you to further checks and actions.

Helpful?5WNV91SDOBS215137663
Sep 18, 2023
Reviewer name: Steve
Sold byJ and B Tool Sales
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Love the battery movement monitor

Bought the 3721 battery monitor and love the ability of knowing how the battery and alternator are performing while driving the vehicle. I bought a couple of these and gave them out as birthday gifts to both of my sons. They love them too!

Review from Innova
Helpful?5WNV91SDOBS215137663