By using a 240-volt circuit (such as the outlet for an electric dryer), the car might be able to receive 240 volts at 30 amps, or 6.6 kilowatt-hours per hour. This arrangement allows significantly faster charging, and can fully recharge the battery pack in four to five hours.
EXFat is just an extended version of the FAT format. Unlike FAT, and FAT32, it can support files as large as 16 Exbibytes, and can support disk sizes up to 64 Zebibytes. FAT32 only supports files as large as 4GBs, and drives as large as 2TBs.
It also means that future SD cards will be able to use exFAT up to 512TB and, in theory, beyond. Either way, the SD Card Association provides a free SD Formatter 4.0 for SD/SDHC/SDXC program for Windows and Mac OS X for people who want to check or reformat cards.