Premium Anti-Freeze Battery Hydrometer Tester – Unmatched Accuracy & Durability
Engineered with industrial-grade borosilicate glass for extreme temperature resistance, this hydrometer delivers precise specific gravity readings (-20°C to 50°C). The weighted stainless-steel ball design ensures effortless fluid sampling, while the shockproof PVC casing prevents leaks. Optimized for lead-acid batteries in cars, boats, and solar systems, it features a triple-scale display (specific gravity, freezing point, battery charge) for instant diagnostics. The ergonomic rubber grip enhances control during testing. Wholesale-ready with bulk packaging—ideal for auto shops, marine maintenance, and off-grid energy suppliers. Achieve professional-grade results without the professional price.