Factory Direct Anti-Freeze Glass Battery Tester Hydrometer

Precision-engineered borosilicate glass resists extreme temperatures for year-round durability. Heavy-duty rubber bulb ensures airtight suction with ergonomic grip for effortless testing.

Calibrated scale from 1.100 to 1.300 specific gravity with 0.005 resolution for pinpoint electrolyte analysis. Frost-proof design performs reliably in -40°F to 140°F environments.

Professional-grade tool for automotive shops, marine battery maintenance, and solar power systems. Direct factory pricing eliminates middleman markup for bulk fleet or dealership orders.

Seamless glass-to-rubber fusion prevents leaks during repeated use. Essential for accurate battery health checks on cars, trucks, golf carts, and industrial equipment.