Wide Voltage Range Designed to test batteries with a stop-discharge voltage range of 2.5~3.5V, making it versatile for various battery types. Overheat Protection Equipped with active fan cooling and overheat protection, this tester maintains safety during long-term usage. Four-Channel Capacity Measurement The Aideepen LCD tester module offers four-channel capacity measurement, ensuring accurate testing of multiple batteries simultaneously. Auto Charge/Discharge With support for up to 9 automatic charge and discharge cycles, this tester streamlines battery management for efficiency. Internal Resistance Testing Using a DC two-wire method, the tester accurately measures internal resistance, providing valuable insight into the batterys health.