Based on the information provided the repairability of the Lenovo Tab M8 seems to be average. The easily accessible battery and battery cable are positive points but the use of adhesive and the delicate process of removing the screen are negative points. Additionally the need to remove metal plates over cable connectors can also make repairs more difficult. Overall I would give the device a score of 6.0 out of 10 for repairability.
Disassembly
Positive
Negative
Battery cable and the Battery are easily accessible.
Adhesive used for the Battery.
Screen needs to be removed first which is a delicate process.
Metal plates over the cable connectors need to be removed.