1, first of all, if there is no battery, buy a new battery can be replaced. This is the reason why the occasional keyboard failure is the most.
2, of course, there are some instruments that interfere with the signal of the wireless keyboard, the general wireless keyboard is 2.4Hz wireless frequency band, which if there are some wireless keyboard next to the Bluetooth, cordless phone will interfere with the signal of the wireless keyboard, so move these devices to other places.
3, if the above situation is not, then the user first check whether the wireless keyboard has just entered the standby mode when this failure will occur. Then the standby mode is that there will be occasional failures.