To increase the duration of charging one battery, do the following:
Outlast: Code (Increased battery power) Free Download
1) Go to the Outlast \ OLGame \ Config folder
2) open the DefaultGame.ini file with notepad
3) Press Control + F and look for the line BatteryDuration = 150.0
4) Change it to any number, any number of times exceeding 150.0
IMPORTANT THAT AFTER THE NUMBER THERE WAS A DOT (9999999999.0)
5) play
I tested it on the very first version, but I think that it will go to any, because this cheat changes the file, which, as a rule, does not change in patches.