18650 Lithium Battery Capacity Tester Module High Precision XH-M239 LCD Digital Display True Capacity Module MaH/mwH Measurement Note:now we only have Chinese version,and we do not have English user manual and instructions,hope for your understanding. Product selling points: 1: Widely used 2: Compact appearance 3: Easy to use and understand 4: Measurement accuracy: 1mah 5: Intelligent chip control, clear LCD display, accurate measurement Note:the battery on the left is the power supply on the circuit, and the battery on the right is the test. Features: Product Name: 18650 lithium battery capacity tester Product model: xh-m239 Display accuracy: 0.1 Measurement accuracy: 1mah Power supply voltage: dc5-12v / 18650 battery (delivered without battery) Standby current: 5mA Discharge current: About 500mA Load power: 10W 8 Appearance dimension: 111 * 97 * 25MM Product weight: 93g XH-M240 Parameter: Product name: 18650 lithium battery true capacity tester Display accuracy: 0.1 Measurement accuracy: 1mAH Power supply voltage: DC5~12V/18650 battery power supply Standby current: 5~7mA Discharge current: about 500mA Load power: 10W8 Appearance size: 110*80*25mm Installation size: 72*53 Installation aperture: 3mm About 18650 battery The minimum discharge stop voltage of 18650 battery is generally: 2.75V. Under normal circumstances, when the voltage drops to 0.875 times the rated voltage (3.24V) It should be charged, and then continue to use, the voltage will drop rapidly, there may be over-discharge and damage, affecting the life. (Recommended discharge termination (The voltage is set to 3.5V) The charging voltage is generally: 4.20V-4.3V/4.35V. Measurement time calculation Auming that the battery capacity is 2000mAH, the discharge current of this tester is about 500mAH, (2000:500=4), and the measurement time is about 4 hours about.