The original battery far outlived its expected lifespan -- you need a new battery. Given that this system is approaching ten years old, you'll likely find only third-party batteries available -- look on Amazon for a seller with a verifiably good reputation.  
On Start, I receive a message: Warning: The battery cannot be identified. The system will be unable to charge this battery. Press any key to continue. My battary is always at 0%   I diagniosed my laptop using bios and got an error: Error code 2000-0132 The battery is reaching the end of its usable life It's also showed that battary had 49% health.   My BIOS is really old and I can't update it because "the battery must be charged above 10 before the system bios can be flashed", I tried many different things but nothing seems to help. I tried using /foreceit command both in windows and freeDOS. In windows it's just opens and still has 10% issue, in freeDOS it's responding with "Test." and nothing happens Next thing I tried was opening the program without battary at all, and inserting it after you get a promt that you need a battary to flash, haven't worked.   Another thing I tried was opening the program, copying all the program's files in the temp folder, and pasting them in another directory. After that in platforms.ini and platform.ini I changed BattaryCheck=1 to BattaryCheck=0, still when you open the program, it will rewrite the platforms.ini file to it's defaults, read-only check just makes the program don't work at all.   I also tried /writehdrfile  to try another solution, and  just got "Invalid WinFlash parameters" in windows and same "Test." in freeDOS My end goal is battary working properly. Don't know what should I do now, any ideas?
Battery cannot be identified