1.The blue segment at the upper end is the external discharge terminal, and the lower end has the working indicator of the corresponding channel. 2.Voltage and current curve display, real-time voltage and current, DC two-wire method to measure internal resistance. 3.U-shaped groove at the back is combined with PCB board, and the fan actively dissipates heat to form a heat dissipation channel. 4.18650 battery holder using compact battery holder, suitable for flat battery measurement. 5.Channel type: 8 channels, each unrelated, operation, without mutual influence. 6.Channel synchronisation: support 8 channels to set up synchronisation, also can set up each channel parameter individually. 7.Cycle charging and discharging: only support charging-discharging-charging 1 cycle in automatic mode, do not support multiple cycles. Colour:Black Material:Plastic Package Contents: 1x test module 1x crowbar (color is random,don' accept the specified color, does not affect use) Only 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.