If the notebook's battery power for a long time greatly reduced
, the depth of discharge can try to "save" it. This is a "dead horse a living horse doctors" approach, not a last resort, better not to do so. Discharge the simplest way is to constantly run the program, less than 3% of electricity to restart the books after running into the BIOS vacant until the automatic sony vgp-bps8 batterypower-off date. Then the depth of charge, charging time to reach eight hours, but not more than 12 hours, so you can restore some power to lithium batteries.