This is a patched version of the '08.03' SF2000 firmware. This version has had the battery level patch applied to represent battery levels more accurately.
New values:
5 bars - 0xC8 - 200 - 4.0v
4 bars - 0xC4 - 196 - 3.88v
3 bars - 0xBF - 191 - 3.80v
2 bars - 0xBA - 186 - 3.72v
1 bar - 0xB7 - 183 - 3.66v
UPDATE: 4 bars and 3 bars updated to 3.88v and 3.80v respectively, for a smoother transition across battery levels. Thanks bnister for the calculations!