If you need to store your IQ tablet without use for a month or more, here is the recommendation for the battery:
TabletKiosk recommends fully charging the battery, then remove it and store it in a dry, cool place. If this is an older battery, it may leak more than usual, so recharging it about every month is a good idea. Try to keep the keep the charge over 40%. If you are storing for a long time, remember that the coin battery may deplete during this time, so it may need to be changed once you start up again.