ITEM NO: JDCS1101 Specially designed for testing the charge state of Lead-Acid Battery (standard batteries) Easy to operate and the dial type gauge for accurate reading of battery fluid specific gravity Avoid dead battery or overcharging, effectively extending battery life The transparent plastic housing is convenient for checking fluid conditions Made of durable and corrosion-resistant PS plastic material Application: 6, 12 and 24 Volt Systems Specific gravity range: 1.1-1.3 Kg/L