The E-Z Red S101 battery hydrometer is designed
so that you can see the state of the battery acid.

This battery hydrometer tester is very economical having a rugged construction of unbeatable quality. There are no difficult float reading to be observed and no temperature tables required.

battery hydrometerbattery hydrometer
This battery hydrometer is great for isolating any bad cells in batteries.




If you’re not sure about your golf cart’s batteries, then this battery hydrometer quickly shows which battery (and which cells) are good, fair or poor and is thoroughly recommended.

The state of charge of a battery cell is performed by measuring the density of the electrolyte, which is accomplished by measuring the specific gravity of the electrolyte. The greater the concentration of sulfuric acid, the more dense the electrolyte becomes. The higher the density, the higher the state of charge.

The E-Z Red S101 battery hydrometer is easy to store as no special care is needed to be taken.

Accurate range of 1.100 – 1.300 and, is used by battery manufacturers worldwide

CLICK HERE for Amazon’s Lowest Price on the E-Z Red S101 Hydrometer

Positive Customer Feedback for this battery hydrometer

Source: Amazon Reviews…

  • This item turned out to be awesome, given the price”

  • “Good functioning hydrometer”

  • “Excellent value for the money”

  • “An inexpensive option to test my deep cycle golf cart batteries”

  • “Works as advertised”

  • “Perfect tool for checking batteries”

  • “Needed a hydrometer for golf cart batteries and this works as expected”

Disadvantages of the battery hydrometer

In our research most of the customer feedback was very positive. However, we did come across a few people who were saying the following…

  • “You need to be sure that the device is level when filled with battery acid or the reading will be off a bit”

  • “One of the glass ones with the temperature scale built in works much better for me.”

Warranty …Parts

CLICK HERE for the E-Z Red S101 Hydrometer from Amazon



Electric golf cart battery charging tips is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to, 

Links on this battery hydrometer page are sponsored affiliate links and the owner makes commission if you buy after clicking these links. The owner is not a bona-fide user of this product. However, he has thoroughly researched it and provided a personal opinion only. This disclosure is in accordance with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.”

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E-Z Red
Product Name
E-Z Red SP101 Battery Hydrometer
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