BGS 9671 Hydrovolt Acid Tester

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The BGS 9671 Hydrovolt is a hydrometer-style battery acid tester designed to measure the specific gravity of electrolyte fluid in lead-acid batteries, giving users a reliable indication of battery charge state and overall health. It features a simple squeeze-bulb mechanism with a float scale that provides quick readings without the need for electronics or batteries. Overall, it is a straightforward and affordable tool that gets the job done for basic lead-acid battery maintenance.
Key Features & Specs
| Function | Measures specific gravity of battery acid to assess charge level and battery condition |
|---|---|
| Mechanism | Squeeze-bulb hydrometer with internal float scale for direct specific gravity readings |
| Compatibility | Suitable for standard flooded lead-acid batteries including car, motorcycle, and leisure batteries |
| Material | Acid-resistant plastic body designed to withstand repeated contact with sulfuric acid electrolyte |
| Power | No batteries or external power required, fully manual operation |
| Weight | Lightweight and compact, easy to store in a toolbox or vehicle |
| Manufacturer | BGS Technic, a German-based supplier of professional workshop tools and equipment |
Best for: DIY mechanics, car enthusiasts, and small garage workshops who regularly maintain or monitor conventional flooded lead-acid batteries and want a simple, no-frills tool to check electrolyte condition without investing in electronic testers.