Battery Hydrometer - Acid Tester, Electrolyte Density Checker
Battery Hydrometer - Acid Tester, Electrolyte Density Checker
Battery Hydrometer - Acid Tester, Electrolyte Density Checker
Battery Hydrometer - Acid Tester, Electrolyte Density Checker
Battery Hydrometer - Acid Tester, Electrolyte Density Checker
Rated 4.69 out of 5 based on 13 customer ratings
(13 customer reviews)

$12.99

CAR BATTERY TEST HYDROMETER TESTER – LEAD ACID BATTERY

Availability: In stock

SKU: HYDROSTK1 Category:

The Mighty Max Battery Hydrometer professionally gives accurate indications on battery charge status and battery condition.

The Mighty Max Battery tester is designed to test the concentration of the battery acid in non-sealed batteries.

Mighty Max Hydrometer Tester Features

– Professional quality for highest accuracy

– Precision graduated specific gravity float

– Perform Tests of the battery in seconds

– Easy to read, color coded hydrometer

– Precise readings for status of battery cells

– Accurately Tests battery fluid condition

 

13 reviews for CAR BATTERY TEST HYDROMETER TESTER – LEAD ACID BATTERY

  1. Rated 3 out of 5

    Wolverine –

  2. Rated 4 out of 5

    Plain Servant –

    Good to have, if you still have a few old acid batteries around. Would have given it five stars if it came with instructions. I had to look at a few you-tubes to see how to put it together.

  3. Rated 5 out of 5

    Robert –

    Shipping was great, package was well packed For protection. Quality of item was marvelous as advertised.

  4. Rated 5 out of 5

    Tyson –

    Product arrived in perfect condition. It does exactly what it is supposed to. I also use it to refill those hard to reach batteries. I am very happy and would order it again.

  5. Rated 5 out of 5

    Die Leseratte –

    The company sent me the acid tester. Unfortunately, the plastic tube was taped shut. When cleaning the tube became blind and thus the whole tester unusable. I wrote to the company and recommended to change their packaging method and at the same time complained about the tester. I was sent a new tester free of charge and didn’t even have to send the old one back. This is really a first class service. I can only recommend the company.

  6. Rated 5 out of 5

    sandy –

    Came quick and os what it says

  7. Rated 5 out of 5

    Oliver Taylor –

    This is what a quality tester should be

  8. Rated 5 out of 5

    Allen Nolden –

    Works great no issues yet. I’ve used it nearly 200 times already.

  9. Rated 5 out of 5

    JACK STRINGER –

    5 stars no issues

  10. Rated 4 out of 5

    keath gilbertson –

    nice quality tester for the money !! Now I dont have to rely on an auto repair shop to tell me if my battery has any cells that are weak… Of course it can only be used on batteries that have removable caps to access the cells… Great for do-it-yourselfers !!!!

  11. Rated 5 out of 5

    cbsailor –

    Great diagnostic tool to have when you suspect battery problems.

  12. Rated 5 out of 5

    Ted –

    Just what was needed. The outer cylinder is not breakable glass, but plastic.

  13. Rated 5 out of 5

    Oneshot –

    Good robust unit. Just what I needed.

Only logged in customers who have purchased this product may leave a review.

Excellent
Mighty Max Battery
Based on 4585 reviews
See all reviews
Donna Sherian
I purchased the Mighty Max ML7-12 12V 7.2Ah battery on Amazon in June 2026 to replace the battery in my APC Back-UPS ES 550, and it worked perfectly. The battery was very reasonably priced, arrived quickly, and was incredibly easy to install.

The fit was exact, the connections were straightforward, and my UPS was back up and running in just a few minutes. Now my modem and Wi-Fi system stay powered during outages and power flickers, which has eliminated the need to constantly reset my network equipment.

If you’re looking for an affordable, reliable replacement battery for a UPS, alarm system, or other backup power application, I highly recommend the Mighty Max ML7-12. Great value, easy installation, and excellent performance so far!
kevin jenkins
POWER PROVIDER!! Love It.
Dave Peleshok
Great battery. Working perfectly in my garage door openers.
Alison Russo
Batteries were easy to install. I've used this product before - no issues
Adam Atlas
Nice products, used many and enjoyed all. Really high quality batteries and chargers,!!! 👍
Mike Gibson
The Mighty Max battery is a great product and outstanding value, outperforming batteries costing triple the price.
Thomas Owens
Received on time
Jeff Allen
Ordered as a replacement battery for a 2016 Honda PCX150. Received with a charges which was a nice plus. Battery was fully operational when received and installed. Only issue is in the terminal attachments in that the “keeper” nut would not stay stationary within the battery terminal hubs when trying to screw the terminal to the cable(s). Had to shim and/or tape them in place in order to start the bolts and complete the attachment to the battery terminals. Otherwise appears to be a good replacement battery. Would purchase another when the time comes,
Joe Rios
Shipped timely, looknforward to installing it.
Helen Allen
Battery was received from UPS in a beat up box with a lot of dirt and ink stains on the outside of the box. The inner box with the battery was unharmed. This was an Amazon ship and the packaging was not up to their standard.

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