Battery  and power management board for Square Terminal Item Condition: used item in great working condition. Board is functional and Battery holds good charge.

Diagnostic tip: if battery charging and not holding enough charge for you or it is slowly degrading all you need is battery and we have another listing for just the battery replacement

however if all the sudden terminal only stays on while using the USB charger only that means the power management board is defective and it's likely because of irregular battery voltage. Then you are in the right place and we suggest replacing both the board and the battery.