- Immediately and accurately test battery life whether the battery is hot or cold
- Indicator Dial Shows Battery Charge & Specific Gravity
- Auto Shutoff Valve Prevents Overflowing
- Acid Resistant
- Help extend battery life and detects overcharge
- Works on all 6-12-24 volt systems
- Thick plastic body resists breakage
- Direct dial scale features oversize markings
- Instructions Included
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