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Unitec 74274 battery acid tester Hydrovolt, measuring device for acidity.
Checks state of charge and acid density of all lead-acid batteries. Large, precisely readable scale, suction ball at all temperatures elastic and functional. Hydrostatic barrier automatically prevents any leakage and trapping of air. The twin measuring device on which the scale is mounted, is 360° rotatable, measuring instrument does not have to be held vertically. Intake system prevents blistering annoying tapping no longer necessary. Precision equipment.Made in Germany.
Contents:
Kay
Reviewed in Germany on October 4, 2024
alles ok.
NO BS REVIEWS!
Reviewed in the United States on September 8, 2023
THIS product is a pain in the butt. IT likes to keep spinning when trying to read the gravity. Also it does not suck up enough battery acid usually you have to squeeze the ball very hard to get enough just to be able to read it. Siri off the money and purchased the more professional version which is the one that looks like a turkey baster with a scale! much easier and accurate!
Ski Pro 3
Reviewed in the United States on September 2, 2023
Very accurate but do not leave it out in the sun or the gauge colors will fade. Otherwise, it works very good and very accurate. I stow one in my RV full time now and another in the garage/shop.
Will
Reviewed in the United States on May 6, 2023
This hydrometer is easy to use, but you do have to be careful to squeeze the bulb enough so the meter dials are completely flooded with the battery acid being tested. It is best to release the bulb slowly to allow the vacuum to pull the acid into the meter. If the dials are not completely flooded the reading will not be accurate. I compared it with standard glass tube type hydrometer and found the readings to be comparable. Once the two dials stop moving you can then read the specific gravity of the battery acid. You don’t have worry about temperature compensation as it it automatic. I do recommend flushing the meter with distilled water when done using it. I can’t say I’d recommend it for heavy commercial use, but for the average homeowner, and perhaps for a small business, who needs to check lead acid batteries used for typical sump pump backup applications, campers, boats, and such, I think it’s ideal.
Louis
Reviewed in Canada on April 8, 2023
I recently purchased two Hydro Volts hydrometers and one ATC 4-in 1 refractometer to measure battery acid specific gravity in order to adjust battery charging parameters. I suspected that all these instruments were quite a bit inaccurate because they all gave different results. It turns out most hydrometers and refractometers give results with errors that are way too large especially when charging large expensive batteries. One Hydro Volts hydrometer gives results that are .017 lower than expected. Another Hydro Volts hydrometer gives me results that are .003 higher than expected. The 4-in ATC refractometer gives me results that are .010 higher than expected. To identify the accuracy error, I compared the results with a very high precision weight scale. I measured the actual specific gravity of the acid using a high pre cision weight scale. You measure the weight of a known volume of distilled water and compare it with the weight of the same volume of acid. The weight of the acid divided by the weight of the same volume of distilled water gives you a very precise value of the actual specific gravity. All the hydrometers and refractometers can be used but should be corrected for their specific errors. I think it is especially important to do so when charging large expensive batteries. I encourage everyone to make the same tests and make sure they test the accuracy of their hydrometers and refractometers. Charging batteries incorrectly causes battery damage and premature failure. For large and expensive lead acid batteries, It is very important to charge them very accurately by measuring the specific gravity very accurately.
Jordi Planas Sánchez
Reviewed in Spain on April 10, 2022
Lo q buscaba para una batt de ácido
Customer
Reviewed in the United States on April 10, 2021
Living off- grid and maintaining a battery bank requires a good hydrometer. I have tried several different models and found this style to be of my liking. I find it easy to use and the numbers are clear and easy to read. It does cost a little more but worth the price. I highly recommend.
J. Miranda
Reviewed in the United States on August 14, 2020
Buy something better. Today I almost had the plastic tube fall inside the battery as it detached from the hydrometer. The Internal dial gets stuck when filled with battery liquid because of friction, so you have to tap it in order to unstuck it and read it "correctly".
Francisco Castaño
Reviewed in Spain on July 11, 2020
Un sistema muy grafico y fácil de leer, me gusto mucho.
VKM
Reviewed in the United States on December 25, 2020
This works well. My glass tube hydrometer started leaking This took its place. The bulb is soft and seems to work well as long as you keep it level. A little challenge to rinse out, but c'est la vie.
Thodi
Reviewed in Germany on November 20, 2020
Erstmal das Teil kam ordentlich verpackt an,und wurde auch fix geliefert.Prompt das Teil ausgepackt,und ausprobiert,zeigt die selben Werte an,wie mein Hella Hydrovolt,also wird's wohl passen. Macht was es soll,was will man mehr.
JCJIII
Reviewed in the United States on July 16, 2019
I think these are made in Germany, but not sure. Ten years ago, I bought one marked with the Hella brand name. It was blue. This one is identical but red and marked with Midnite. I guess the maker sells these to various retail companies for promotional purposes. Right now Midnite has the franchise. It is a very good and precise device. The black squeeze bulb lasted ten years with testing 60 battery cells every 60 days before it developed a small air leak and would no longer draw enough acid into the test chamber to make accurate readings - so that probably somewhat over 10,000 bulb-squeezes. I will buy another one in ten years.
athscherer
Reviewed in the United States on February 13, 2017
I can't figure out why this style hydrometer has not completely replaced the glass tube type hydrometers. Temp compensated automatically, easy to read, no glass float to stick to side of glass tube which can cause reading errors, accuracy appears to match that of a quality glass tube type hydrometer when it is done correctly, well made. It is expensive, and the glass tube types are so cheap, but this is truly a joy to use. I trust the reading from this over the glass tube style hydrometers.
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