The Professional Battery Hydrometer is an essential diagnostic tool for the proactive maintenance of flooded lead-acid batteries. By measuring the specific gravity (density) of the electrolyte solution, this instrument provides a direct and reliable assessment of a battery’s state of charge and internal health—data that voltage meters alone cannot capture. Whether you are managing an off-grid solar bank or maintaining a fleet of vehicles, this hydrometer helps identify “dead cells” and prevent premature battery failure.
Key Features
High-Precision Internals: Features a scientifically calibrated, lead-weighted glass float for pinpoint accuracy in density measurements.
Acid-Resistant Construction: Built with premium thick-walled glass for maximum clarity and chemical-resistant rubber components that won’t degrade over time.
Instant Diagnostics: The internal float is color-coded (Red/White/Green), allowing for “Good/Fair/Recharge” status checks at a glance.
Universal Utility: Fully compatible with all starting and deep-cycle lead-acid batteries used in automotive, marine, and industrial applications.
Efficient Suction Bulb: The large-capacity rubber bulb is designed to draw a full volume of fluid in a single squeeze, ensuring the float rises freely for a stable reading.
Technical Specifications
| Property | Specification |
| Material | Acid-resistant Borosilicate Glass & Heavy-duty Rubber |
| Measurement Range | 1.100 to 1.300 Specific Gravity |
| Float Type | Lead-weighted, Color-coded |
| Total Length | Approx. 290mm (11.4 inches) |
| Compatibility | Flooded Lead-Acid (Automotive, Solar, Marine, Golf Cart) |
Status Diagnostic Guide
Green (1.260 – 1.300): Fully Charged. The battery is in peak condition.
White (1.205 – 1.260): Fair/Low. The battery is partially discharged and should be recharged soon.
Red (1.100 – 1.205): Discharged. The battery requires an immediate full charge; if readings stay red after charging, the cell may be failing.
Primary Applications
Solar Battery Banks: Monitoring individual cell health in off-grid renewable energy systems.
Automotive & Trucking: Essential for troubleshooting starting issues and performing winter prep.
Marine Maintenance: Ensuring deep-cycle house batteries are balanced for reliable off-shore power.
Industrial Equipment: Maximizing the daily runtime and lifespan of forklift and golf cart batteries.











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