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.
that chart says the maximum file size on an ext3 file system (the file system I am using) is 2GB so that may be part of my problem. But that doesn't seem to explain why the split didn't work right. I believe the file size is being reported properly, the file is only taking up 3GB of space on the windows machine.