Storing the Pathfinder for an Extended Period of Time.
If your AAC device will not be used for an extended period, in order to extend the life of the battery pack we recommend that you do the following:
For all Pathfinders:
Fully charge the batteries in your device. When the batteries are fully charged, remove the battery door. Pull the battery pack from the case and store it with the device.
When you are ready to use the device again, insert the battery pack into the device and fully charge the batteries before you use your device.