Battery Hydrometer 1.10–1.30 Electrolyte Density Tester | Black

Battery Hydrometer – Electrolyte Density Tester for Lead-Acid Batteries

Keep your lead-acid batteries performing at their best with this beginner-friendly Battery Hydrometer. Featuring a precise 1.100–1.300 specific gravity measuring range and a tri-color scale, it lets you instantly read electrolyte density and assess your battery's condition — no calculations, no guesswork. Made in Mainland China.

Key Features

• High-Precision Borosilicate Glass Float: Made from high-purity borosilicate glass that is fully resistant to sulfuric acid electrolyte corrosion. Stable physical properties ensure accurate, consistent readings every time without material deformation affecting results.
• Durable Acid-Resistant Suction Bulb: Crafted from high-density acid-proof rubber for excellent sealing and a comfortable, elastic feel. Draws and releases electrolyte effortlessly and resists aging or cracking even after extended contact with corrosive liquids.
• Intuitive Tri-Color Scale (Red / Yellow / Green): Wear-resistant, waterproof ink printed directly on the transparent glass tube covers the full 1.100–1.300 standard range. Color-coded zones instantly tell you if your battery is in good, fair, or poor condition — no math required.
• Leak-Proof Sealed Connection: High-precision fitting between the glass tube and rubber bulb leaves zero gaps, preventing corrosive electrolyte from leaking during use and keeping you safe from chemical contact.
• Compact & Portable Build: A thickened glass body offers solid collision resistance while the lightweight rubber bulb keeps the overall unit easy to carry — ideal for garage workshops, outdoor service calls, or mobile repair scenarios.

Specifications

Applications

Perfect for lead-acid battery maintenance in cars, trucks, motorcycles, forklifts, golf carts, and solar energy storage systems. Great for automotive repair workshops, fleet maintenance teams, battery production testing, and DIY home garage use.

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Learn more: FuelEconomy.gov on vehicle maintenance

Frequently Asked Questions

Q: What type of batteries can this hydrometer test?

A: This battery hydrometer is designed specifically for lead-acid batteries, including automotive car batteries, motorcycle batteries, forklift batteries, golf cart batteries, and solar energy storage batteries. It measures electrolyte specific gravity in the 1.100–1.300 range to indicate battery health.

Q: How do I read the results on the tri-color scale?

A: Simply draw a sample of electrolyte into the glass tube and observe where the internal float rests against the color-coded scale. Green indicates a fully charged, healthy battery; yellow signals a fair charge that may need attention; red means the battery is significantly discharged or degraded. No additional calculations are needed.

Q: Is this hydrometer safe to use with sulfuric acid electrolyte?

A: Yes. The glass float is made from borosilicate glass that is chemically resistant to sulfuric acid, and the suction bulb uses acid-proof rubber. The leak-proof sealed connection further protects you from electrolyte contact during normal operation, making it safe for regular battery maintenance tasks.

Q: Does the hydrometer require any batteries or power to operate?

A: No batteries or external power are required. This is a fully manual, gravity-based instrument — simply squeeze the bulb to draw electrolyte into the tube and read the float position on the scale.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.