The device is equipped with a supercapacitor (supercap) which automatically charges from the fully-charged main battery. The supercap requires approximately 10 minutes to fully charge. The supercap retains random access memory (RAM) data in memory and WLAN connection for at least 30 seconds when the main battery is removed during Hot Swap. After 30 seconds, the WLAN connection is dropped and the RAM data is retained for 20 minutes.
The 6,700 mAh battery charges from 0 - 90% in less than four hours at room temperature. The 7,000 mAh battery charges from 0 - 90% in less than five hours at room temperature.