Automatic Four Functions Testing Machine 1. Application Apply to small size sealed lead-acid battery inspection (Internal resistance testing, high voltage testing, capacity testing, data marking). 2. Features Microprocessor technology, machine runs automatically; Flexible & easy setting of various functional parameters; Stainless steel worktable, soft rubber bearing help to protect the surface; Up to 10 groups of internal resistance testing procedures can be set for analyzing; Capacity testing includes subsection test, open circuit test and load test; High voltage test and current leakage test can be set anytime. 3. Function Count for qualified & unqualified batteries. Sound & light alarm for unqualified batteries. Automatic detection when battery is ready; in case of no battery to be detected, machine will stop automatically. In addition to its own internal resistance test, the function can also test open-circuit voltage of battery. Capacity testing can automatically identify battery's polarity, store test data and printing. 4. Technical Parameters Resistance Test Range of resistance test: 300 mΩ, Precision: ≤ 100 μΩ F.S; 3 Ω / 30 Ω, Precision: ≤ 1 mΩ F.S; 30 Ω, Precision: ≤ 10 mΩ F.S Current testing frequency: 1 kHz Temperature coefficient of resistance test: (±0.01% rdg. ±0.5 dgt)/℃ Temperature coefficient of voltage test: (±0.005% rdg. ±0.5 dgt)/℃ Voltage test range: 3 V, Precision: ≤ 1 mV; 30 V, Precision: ≤ 10 mV High voltage test High voltage range: 0.5 ~ 5 KV Leakage current range: 0.3 ~ 2, 20 mA Capacity test Discharge time: 0.1 ~ 999.9 S Precision of voltage: ≤ ±0.5% F.S Precision of current: ≤ ±0.5% F.S Hot marking Hot marking time: 0.5 ~ 9 s Hot marking temperature: 0 ~ 300℃