Features: The product supports 2-channel capacity and internal resistance measurement.Supports separate charging and discharging, and supports up to 9 charging and discharging cycles in automatic mode.Each channel is of the other, can be set up separately, operation, no interference with each other.Strong battery clip, 18650 battery holder using compact battery holder, suitable for flat battery measurement.battery charging chip control, maximum about 1A charging, full voltage 4.2V, charging current less than 0.1A stop charging.Parameter:Working voltage: DC 5VApplicable batteries: meet the stop discharge voltage 2.5 ~ 3.5V, 2.8V start ~ 4.2V full of batteries are applicablePower supply interface: Type-C power supply interfaceTest quantity: 2-way charging and discharging measurementInternal Resistance Measurement: Support, using DC two-wire to test internal resistance.Charging function: support, full of automatic cut-off charging (does not support lithium iron phosphate battery charging)Discharge function: Support, automatically stop when conditions are reached, discharge current is not adjustable.Automatic charging and discharging: Support, the battery is fully at of automatic mode.Cyclic charging and discharging: Support, 1~9 cycles adjustable (only automatic mode support)Status Alert: SupportHeat dissipation mode: fan active heat dissipationOverheating protection: SupportStop Discharge Voltage: 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 3.4V, 3.5V, adjustable in 11 steps.Discharge current: maximum of about 1A non-constant current, non-adjustable, does not support transformationCharging voltage: special battery charging chip control, maximum about 1A charging, full voltage 4.2V, charging current less than 0.1A stop charging.Material: plasticcolour: greenPackage Contents:1 x 18650 Lithium Battery Capacity TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.