10 Best Battery Hydrometers 2021

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

EZRED SP101 Battery Hydrometer – ⭐ Best Overall Battery Hydrometer

SP101 by EZRED

  • Weight: 0.15 pounds
  • Dimensions: 0.5 x 11.4 x 1.3 inches
  • Warranty: Limited Lifetime
EZRED SP101 Battery Hydrometer
  • BATTERY HYDROMETER: This battery tester is made to stand up to tough treatment in service stations & garages. It's designed so that both customer & technician can see the state of the battery acid.
  • RUGGED & EASY TO USE: This hydrometer makes reading & understanding battery levels easy, accurate, & quick, with no difficult float reading & no temperature tables required.
  • ACCURACY & RELIABILITY: With a range of 1. 100 – 1. 300, you can confidently know the state of charge for the battery cell. Great for use by professional battery techs, mechanics, or anyone else.
  • INNOVATION AT ITS FINEST: We make high quality hand tools & accessories, tool organizers, ratchet sets, LED flashlights & work lights. We specialize in tools for battery, heating & electrical work, for both the professional tradesperson and home DIY'er!
  • THE EZRED DIFFERENCE: Leading with innovation, our focus is to design, manufacture & deliver the most functional & durable professional grade tools & lights. Get the job done with EZRED tools!

OTC 4619 Professional Battery Hydrometer

4619 by OTC

  • Color: Red
  • Weight: 0 pounds
  • Dimensions: 3.8 x 14.3 x 0.6 inches
  • Warranty: Limited lifetime warranty
OTC 4619 Professional Battery Hydrometer
  • Hydrometers test the state of charge of a battery cell by measuring the specific gravity (density) of the electrolyte - the greater the concentration of sulfuric acid, the more dense the electrolyte becomes
  • OTC's Professional Battery Hydrometer displays a batteries specific gravity (density) on an easy-to-read float with a scale ranging from 1.100 to 1.300
  • Built in thermometer indicates what must be added or subtracted from the float reading to arrive at an accurate specific gravity reading for each battery cell
  • Flexible rubber tip offers easy access to even hard to reach battery cells while the battery is still in the vehicle
  • Glass and rubber construction; One year limited warranty

Performance Tool W1657C Deluxe Battery Tester – 💲 Best Budget Battery Hydrometer

W1657C by Performance Tool

  • Weight: 0.25 pounds
  • Dimensions: 1.6 x 10.8 x 5.6 inches
Performance Tool W1657C Deluxe Battery Tester
  • Test 6V, 12V and 24V batteries
  • Dial indicator style
  • Instant reading warm or cold

Unitec 74274 Battery Hydrometer Hydro Volts – 👑 Premium Pick

74274 by Unitec

  • Weight: 0.31 pounds
  • Dimensions: 1.6 x 4.1 x 7.1 inches
Unitec 74274 Battery Hydrometer Hydro Volts
  • For lead acid batteries.
  • Large scale.
  • Hydrostatic barrier.
  • Precision equipment,
  • Made in Germany.

Mighty Max Battery Golf Cart/Deep Cycle Battery Hydrometer Tester Brand

10 by Mighty Max Battery

  • Weight: 0.15 pounds
  • Dimensions: 11.5 x 2 x 2 inches
Mighty Max Battery Golf Cart/Deep Cycle Battery Hydrometer Tester Brand
  • Professional Battery Tester
  • Compact hand held tester reads specific gravity of battery acid
  • Accurate easy to read battery acid testing

Professional Golf Cart Battery Hydrometer

Aramoxeyox0bgtqz by Aramox

  • Color: popular
  • Dimensions: 0.4 x 0.4 x 0.4 inches
Professional Golf Cart Battery Hydrometer
  • Scope of Application:Works on all 6-12-24 volt systems.
  • High-quality materials:The golf car battery hydrometer is made of high-quality plastic, not easy to break, durable, and can be used for a long time.
  • Function:Whether the battery is hot or cold, the hydrometer can immediately and accurately test battery life, and can also help extend battery life and detect overcharging.
  • Professional Design:Clear scale dial, you can easily read the value.
  • Professional Design:Clear scale dial, you can easily read the value. Quality Assurance:If you need these products, please do not hesitate to place an order. We believe that our services will satisfy you. We are professional Amazon sellers.If you have any questions about our products, please contact us.

Battery Cable Terminal connectors

YHGFDHS0513-Z by Taukealugs

  • Color: Kits3:Terminal Washers,Brush &Hydrometer
Battery Cable Terminal connectors
  • Packages includes:10 pieces battery anti-corrosion washers(5 red & 5 green) and 2pcs Battery Terminal Cleaning Brush.
  • Features of Battery Terminal washers protector: the battery washers can prevent corrosion around the battery terminals, prolong battery life, for use with 6 and 12-volt battery,the color coded for positive and negative terminals, red for +, green for -
  • Size of Battery Terminal washers protector: inner ring can be removed to fit larger terminals, outer ring diameter is approx. 44 mm/ 1.73 inch; Inner ring diameter is approx. 20 mm/ 0.79 inch; Diameter of inner ring after dismantling: approx. 30 mm/ 1.18 inch
  • Battery Terminal Cleaning Brush-Strong metal construction with premium nickel plated housing,Cap covers brush for easy storage and locks closed - Pocket Sized Tool
  • Battery Hydrometer:Easy to read pointer for accuracy,Accurate range of 1.100 - 1.300,Used by battery manufacturers worldwide

Mighty Max Battery Golf Cart/Deep Cycle Battery Water Filler Bottle

GOLFBTKIT by Mighty Max Battery

Mighty Max Battery Golf Cart/Deep Cycle Battery Water Filler Bottle
  • Features the double action fast flow valve tip that prevents after-drip
  • Automatic filler stops flow at proper level
  • 2-quart capacity, can be used with acid or water
  • Acid proof polyethylene

Golf Cart/Deep Cycle Battery Rapid Hydrometer Tester

HYDRO-A2 by Mighty Max Battery

Golf Cart/Deep Cycle Battery Rapid Hydrometer Tester
  • Hydrometer immediately and accurately tests battery life whether the battery is hot or cold
  • Help extend battery life and detects overcharge
  • Assists in preventing dead batteries
  • Works on all 6-12-24 volt systems

QWORK Battery Hydrometer Tester

WD4137 by QWORK

QWORK Battery Hydrometer Tester
  • Professional Battery Tester, accurate easy to read .
  • Measuring range from 1.100 to 1.300.
  • When using, the meter should be immersed vertically in a transparent container, and the electro-hydraulic density can be read from the meter at any time.
  • The built-in thermometer indicates the value that must be added or subtracted from the float reading to obtain an accurate specific gravity reading of each battery cell.
  • The function is to test the state of charge of the battery, specifically to determine the solution in the acid or alkaline storage battery. The higher the concentration of sulfuric acid, the denser the electrolyte becomes.

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