Internal battery resistance tester

Uni-T UT-677A internal battery resistance tester Battery Internal Resistance Tester is a measuring instrument for measuring the internal resistance, voltage and temperature of batteries, such as lead-acid batteries and lithium batteries, to assess the condition of batteries. It can also be used as an ESR measurement instrument for electrolytic capacitors. The UT677A uses a 4-terminal AC test method to measure the internal resistance of a battery, which can measure the correct measurement value without being affected by the contact resistance between the test lead, terminal and battery electrode. Measurements, ranges: Battery internal resistance range: - 0 mom ~ 3 mom: ±1% ±20 (resolution of 1 uom) - 3 mom ~ 30 mom: ±0.5% ±15 (10 uom resolution) - 3 mom ~ 300 mom: ±1% ±15 (100 uom resolution) - 300 mom ~ 3 ohm: ±0.5% ±15 (100 uom resolution) Battery voltage range: - 0 V ~ ±7 V: ±0.2%±10 (1 mV resolution) - 7 V ~ ±71 V: ±0.2%+10 (1 mV resolution) Temperature: -10°C - 60°C; ±1°C Features, functions: - Display: 3.5'' - Display resolution: 320 x 240 px - Measurement time: approx. 2 sec. - USB interface - Bluetooth application - Data storage: up to 5000 entries - Three alarm thresholds - Power supply: 3.7V rechargeable battery - Product dimensions: 190 x 121 x 51 mm - Weight: 480 g - Gross weight: 2095 g