Rated 4.50 out of 5 based on 26 customer ratings
(26 customer reviews)

$11.99

Golf Cart / Deep Cycle Battery Rapid Hydrometer Tester

Availability: Out of stock

SKU: HYDRO-A2 Category:

Might Max Battery Hydrometers are designed to detect a battery's state of charge by sampling the electrolyte from each cell. The hydrometer contains a floating indicator that represents the density of the electrolyte – the more dense the electrolyte the higher the battery's state of charge.

Mighty Max Battery Hydrometer

– Thick wall plastic body resists breakage

– Direct dial scale features oversize markings

– Immediately and accurately tests battery life whether the battery is hot or cold

– Works on all 6-12-24 volt systems

– Includes a Step-by-step instructions on body

26 reviews for Golf Cart / Deep Cycle Battery Rapid Hydrometer Tester

  1. Rated 5 out of 5

    gerald r. –

    thanks

  2. Rated 4 out of 5

    Bob Cox –

    Used once, seems fine

  3. Rated 4 out of 5

    Art MacKinnonJr. –

    The product is great i have recommended it to a few golf cart people in my community

  4. Rated 5 out of 5

    Lente Loquito –

    Checked the batteries in my 5th wheel. Confirmed, the 2 year old batteries are in like new condition. Each cell read 1.3. Perfect!

  5. Rated 5 out of 5

    Eddie D Clement –

    Works great. Found my bad batteries.

  6. Rated 5 out of 5

    Doris Laurange –

    Easy to use and great value for the money

  7. Rated 5 out of 5

    me –

    Great

  8. Rated 5 out of 5

    Donald J Faucher –

    Works

  9. Rated 4 out of 5

    BRADFORD RYAN –

    awesome got here quick

  10. Rated 4 out of 5

    Johnny P –

    worked ok, no issues

  11. Rated 5 out of 5

    Sharon –

    Used for testing deep cycle battery, easy to use.

  12. Rated 5 out of 5

    David F Rent –

    Works for what I needed, testing battery conditions.

  13. Rated 4 out of 5

    Gercourt –

    This product arrived quickly and is nicely built but there can be a problem. While this will most likely work on most car batteries I ran into a problem with a new Interstate marine deep cycle battery I wanted to test. Each cell does not contain enough liquid to get a reading so I was out of luck for testing though generally this tester works really well when there is enough battery acid to fill the tester. There is no way to know in advance if this will work with a specific battery.

  14. Rated 5 out of 5

    George W –

    Liked: Very easy to use. Easy to read. Disliked:. Rubber pick up tube seems a little thin, but time will tell.

  15. Rated 4 out of 5

    DWE –

    I use it to test my boat batteries. I don’t have power down on my dock. So I test them to see if any need a charge. Then I can bring them up to the garage for charging. I have three boats with two batteries in each. I really need to run power down there!

  16. Rated 5 out of 5

    Dan Thaens –

    As advertised

  17. Rated 3 out of 5

    Donanobis –

    It works but the quality of material is not great… don’t drop it!

  18. Rated 5 out of 5

    Jerry Grayson –

    Worked great and good price.

  19. Rated 5 out of 5

    dawna papebhausen –

    Easy to use, well made, fast shipp, good price.

  20. Rated 5 out of 5

    Dallas R. Vreeland –

    This is an excellent tool to check golf cart batteries

  21. Rated 4 out of 5

    edward –

    Very good, but watch ut for kinked tubing because of pascking

  22. Rated 3 out of 5

    d.lapointe –

    Works well. easy to use.

  23. Rated 3 out of 5

    Michael J. –

    Seems a bit flimsy for my use but the price was right and it works just not too elaborately.

  24. Rated 5 out of 5

    Grammie to10 –

    Haven’t needed it yet, but it is perfect for our needs!

  25. Rated 5 out of 5

    Donna and Gary –

    Works perfectly! Good value.

  26. Rated 5 out of 5

    Allie –

    Works as expected

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Excellent
Mighty Max Battery
Based on 5444 reviews
Poseidon came properly packaged and arrives fast I purchased from Home Depot for my 2018 turbo s dual battery setup going to try these two batteries out and I'll keep you updated on the status and how long they last big system fast car running the dunes it's dune season let's go
Very Heavy Battery with excellent fit & finish. Arrived with full charge.
You receive this paper slip with your new battery- register online and receive an additional 3 months of warranty! You register online and then told - oh! you also have to post an online review with a photo to get those extra months! So, here ya go.
I ordered the batteries from Home Depot. They arrived sooner than expected. They were a performance replacement, and Granny is up and running the seats again!
Goog price, good specs, and it works.
Great price for 9ah batteries.
Good starting power and fit easily.
Awesome product fitted exactly as it should.
Perfect fit just like the original battery. Generator started right up
These batteries are some of the best I ever purchased my last set of 4 lasted 6 years. They were a great price and shipped free very very fast. Thank you spexcarz 9-25-2026