







⚡ Never get caught powerless—test like a pro, anywhere, anytime!
The Mighty Max Battery Hydrometer Tester is a compact, battery-powered device designed to measure the specific gravity of battery acid with precision. CE and FCC certified, it offers an easy-to-read scale for quick and accurate battery health diagnostics, making it an essential tool for maintaining golf cart and deep cycle batteries. Lightweight and portable, it comes with a 1-year manufacturer’s warranty, ensuring reliable performance for professional and personal use.






| Brand | Mighty Max Battery |
| Power Source | Battery Powered |
| Style | HYDROSTK5 |
| Color | Clear |
| Item Weight | 2.4 ounces |
| Item dimensions L x W x H | 11.5 x 2 x 2 inches |
| Specification Met | CE, FCC |
| Measurement Type | Specific Gravity |
| Manufacturer | Mighty Max Battery |
| Item Package Dimensions L x W x H | 10.55 x 2.05 x 1.89 inches |
| Package Weight | 0.09 Kilograms |
| Item Dimensions LxWxH | 11.5 x 2 x 2 inches |
| Brand Name | Mighty Max Battery |
| Warranty Description | 1 Year Manufacturers Warranty |
| Model Name | HYDROSTK5 |
| Number of Items | 1 |
| Part Number | HYDROSTK5 |
| Size | Standard |
F**N
Good quality
Works perfect and long reach for boat batteries.
C**L
Easy tester
Worked as advertised
W**M
It works, but....
It did what was advertised. It wasn't the best quality and if leaks a little if you are not careful. Do be careful using as you are working with sulfuric acid.
K**D
Accurately shows battery specific gravity
Does exactly what it should, reads specific gravity of batteries. I use this for testing industrial forklift battery specific gravity, and this gives a lot more accurate reading than those that give a gravity range. If you are wanting to do load testing and charging on a battery while monitoring specific gravity to see if the fluid is holding charge as it should, this will do what you are wanting it to do.
A**R
Battery cell teator
Works as it is supposed to.
T**S
Plastic tube split when assembled
The only thing required for assembly is to insert the rubber dip tube into the end of the large plastic tube. When I did that the tube split 3 inches up the side making it totally useless.
M**S
Narrow it down to the cell.
Helps tell the truth about the status of the individual cells in your battery.Especially if you have a golf cart with 6 batteries. I was able to Isolate it down to two bad batteries. This way i didn’t have to replace all the batteries because of not knowing which one(s) are bad.
M**A
Did the job
Good price and did the job
Trustpilot
2 weeks ago
3 weeks ago