I am led to believe it’s a battery issue, but I can’t say for sure.
Apple iPad 8th Gen Faulty Charging Problem And Needs To Be Reset
Apple iPad (8th Gen) - A2429 - 32GB - Space Grey - (WiFi) - Powers On - Faulty
Apple iPad 8th Gen. 32GB, Wi-Fi + 4G (Unlocked), 10.2 in - Space Grey Faulty
Apple iPad 8th Gen. 32GB, Wi-Fi, 10.2 in - Space Grey - Faulty WiFi & TouchID
Apple iPad 8th Gen (A2270) - 10.2" - 32GB - WiFi - Grey *FAULTY*
Apple iPad 8th Gen WiFi A2270 Space Grey 128GB 10.2" Tablet Space Grey - FAULTY