EZRED SP101 Battery Hydrometer, Factory

I use this to check SG off a forklift battery that I'm using in my off-grid solar system.It seems to be working and SG tracks voltage as expected. It's easy to use and does the job. I didn't know how accurate it is as I didn't have anything to compare it to.I have a couple of criticisms, I wish it had numbers marked between fair and good so I don't have to estimate, and I see small cracking around the edges which I know can come from the method used to weld the 2 halves together or if solvent is used to clean it in the manufacturing process, but to be fair, I have also left this under the metal cover of my battery outside, so it has been exposed to the elements and temperature swings below freezing. So far no leaks but even if the long term durability isn't there, it's cheap enough to just buy another one.

This EZred battery hydrometer is well made and easy to use. It does not leak as some negative reviewers stated and if used properly provides accurate specific gravity, and thus level of charge, readings for liquid-filled lead-acid batteries. If this product doesn't work for you, then you most likely have no business touching a battery in the first place. If however, you somehow received a broken or defective product, give the supplier a negative review and not the product.

I found this easy to use to find out more about the condition of my batteries. Now I can compare the difference from a new to an old unusable battery.

High quality and works well. I used it to check my golf cart batteries. Thank you

I am not one to get excited about hydrometers but this is a very nice one and is easy to read and use. Hold it level to get repeated accurate measurements but you just need to tell if it makes it into the 'Good' section. I also have an old K-Mart floating-ball type which has 4 different colored balls that all float to the top if the cell is OK. It checks the specific gravity of the charged liquid-acid only; it will not tell you if a cell is shorted, nor can it stress-test the battery. I recommend adding only distilled-water, yearly, up to the lower part of the hole, leaving 1/2" to 1" below the top (be sure the metal plates are covered well), trickle-charge at no more than 2 amps with a charge that tapers-off as it reaches full charge then maintains it, then check the specific gravity of each cell. If your battery is old, or has any problems, get it tested free at your auto shop or a vehicle battery place. If there is any question, replace it, before you get stranded. I had a battery go bad in the parking lot of a Costco, luckily; it was 12 years old and suddenly died. If you use an additive, 'Battery Equaliser' is the only one mentioned that seems to really help, but when a battery is not working well, replace it. Stranded is miserable and costly. Do not expect it to work beyond its stated month. Be pro-active with this important car-starter that can go bad in summer heat and winter cold. Ever been stranded with a dead cell phone battery? Not good. This is for checking a youthful battery yearly. I just had an 84 month battery go bad at 30 months and it was replaced for free. This helped me get it replaced. Hope this helps you.

Much better the other professional type I’ve

Works well but I made the mistake of using it on a battery that had an oil additive to prevent excess gassing and clogged the hydrometer up to the point where it no longer worked properly. Lesson learned. Works great otherwise

Works okay. Nothing special. Good value