1The battery & voltage internal resistance tester is a high precision measuring instrument specially designed for secondary batteries (including lead-acid, nickel-cadmium, NI-MH, li-ion, li-polymer batteries). 2It is a new kind of meter using AC current to test battery internal resistance, and can test the battery open circuit voltage and AC internal resistance. 3Maximum measurable internal resistance value is 3000m.It can test battery internal resistance, also can test the milliohm series sampling resistors, constantan resistors, etc. 4After the test was ended, ti will automatically power off in about 3 minutes in order to reduce power loss. 5Widely used in scientific research institutions, production and distribution of secondary battery, etc The tester uses the characteristics of the battery is equivalent to an active resistance, to energize battery with 1000Hz, about 10mA constant alternating current, then processes voltage sampling, rectifier, filter, thus precisely measures the battery internal resistance.Testing uses fixed zero method, which effectively eliminates the measuring error caused by the contact resistance, improving the measurement accuracy.Features:The battery & voltage internal resistance tester is a high precision measuring instrument specially designed for secondary batteries (including lead-acid, nickel-cadmium, NI-MH, li-ion, li-polymer batteries). It is a new kind of meter using AC current to test battery internal resistance, and can test the battery open circuit voltage and AC internal resistance. Maximum measurable internal resistance value is 3000m.It can test battery internal resistance, also can test the milliohm series sampling resistors, constantan resistors, etc. After the test was ended, ti will automatically power off in about 3 minutes in order to reduce power loss. Widely used in scientific research institutions, production and distribution of secondary battery, etc.Specification:Plug & Voltage: US Plug,110V-240VPower Supply Voltage:DC9V supply voltage adapter or 9V battery(battery is NOT included) Display Voltage:0~26.00V DC (display resolution: 0.01V) Display Resistance:1.00m~3000.00m (display resolution: 1m) Alternating Current Frequency: 1kHz Max Power: Size: 16*8.5*3.3cm / 6.3*3.3*1.3in Weight: 382g / 13.5oz (approx.)Package list: 1 * Tester2 * Test Leads1 * Power Adapter Instruction: Connect the tester to 9V power supply voltage adapter (or 9V battery), then click on the button to power on. Plug in the test leads, and connect two test leads together to short circuit, then press the HOLD button for 2 seconds to reset. Because this product is a high precision product, it can clear the influence of two test leads to battery internal resistance.Then test on both ends of the battery. HOLD button operation: 1, Press the H