Be aware that it takes much longer to charge the battery pack when the Transformer is in use. Remember to fully charge the battery (8 hours or more) before first use and whenever it is depleted to prolong battery life. The battery reaches its maximum capacity after a few full charging and discharging cycles. Airplane Precautions Ask an airline personnel if you want to use your Transformer onboard an aircraft. Most airlines have restrictions for using electronic devices. Most airlines allow elect