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THE BATTERY HYDROMETER TESTER, GUARDIAN OF BATTERY HEALTH, REAL-TIME INSIGHTS, ZERO DOWNTIME
Product Attribute
Size: 11.02*2.83*1.90 inch
Weight: 3.78 oz
Color: Black
Material: Rubber, PS
Packaging: 1x Battery Hydrometer Tester
Note
1. The black plastic buoy must be aligned vertically with the centerline when measuring
2. Suck in battery electrolyte until it is above the lowest line of the horizontal electrolyte level
Product Feature
Premium Material: The shell is made of impact-resistant PS material, which is wear-resistant and not easy to crack
High-Precision Inspection: Accurately present the electrolyte density, quickly determine whether the battery is healthy or not
Transparency: Highly transparent material for clear observation of buoys and pointer indications
Density Standards
1.275-1.300: Battery in health condition, may continue to be used
Less than 1.250: Battery in poor condition and need to be replaced in a timely manner
Happy customer
Reviewed in the United States on May 30, 2025
It worked, hose diameter about 1/2 inch. Length over 3" inch.
alanmoore78
Reviewed in the United States on May 24, 2025
I've been collecting tools for my shop for awhile now and while I have a coolant tester and a brake fluid testing pen, I've never had one for the battery. Not many people check the water/acid level in their battery anymore. Most batteries are either AGM or have sealed caps. But did you know that even the sealed caps can still be removed? And if you live in a hot climate or idle your car a lot with the air on, your battery is just cooking if it's up under the hood! This can seriously shorten your battery life and you might only get 2-3 years out of a new battery.WEAR GLOVES and WEAR GOGGLES or SAFETY GLASSES. You do NOT want battery acid on you, don't ask me how I know, I don't want to talk about it, I was young and stupid and you know how that goes. Anyhow, you can use this tester to check the specific gravity of the acid/water mixture in each of the six cells of your 12 volt car battery. If you've been topping off the water, you might be surprised how low it is (I sure was), and it might be time to get a bottle of acid from say a powersports dealer, and add a little of that to get it back up where it ought to be.The reason I have this is I'm too lazy to change out my alternator multiple times to get a good one in my Explorer, and it runs full field all the time. Typical mid-00s Ford issue. I've read enough horror stories of people going through 4 or more alternators before finding one that'll charge properly. Anyway, point being, the battery is ALWAYS cooking in this thing being charged at 14.8 volts or so, even at idle, so I have to add water at pretty much every oil change, and more often in the Oklahoma summers. So having this means I have the opportunity to NOT buy a $180 battery every 2-3 years. The battery in there is from 6/23, so it's nearing the two year mark, and 1.225 was a little lower than I expected it to be, so I'll be adding a little acid at the next oil change battery check. I'd like to get it back over 1.275 and with this little tester I'll know if I've made a difference.
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