Hello,
I got the scripts here:

https://forum.game-guru.com/thread/214886#msg2544112

Everything works fine except collecting the battery.
When I go near the battery to collect I get an error:
"scriptbank\Belidos\FlashLightBattery\flashlight_battery.lua:21: attempt to compare nil with number"

Instructions:

1. put flashlight3.lua on a not static item (make it always active).
2. put collect_flashlight2.lua on the item you want to collect (make sure it's not static).
3. flashlight_battery.lua goes on the batteries,(make sure the battery is not static).

Job done, it will supress the flashlight until you collect the item.

Press F to use the flashlight once you have collected it, and hold press and hold F to load a battery."

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flashlight_batteries_txt doesn't exist so set it at the top of the script

So put this at the top?

flashlight_batteries_txt=1

Thanks smallg!

Adding:
flashlight_batteries_txt = 1
to flashlight_battery.lua works but when I press F it goes from 100% > 0% and then back to 100% and the battery I collected is still 1.

to fix the above you need to make flashlight_batteries_txt match the actual amount of the batteries (or remove it and just use that variable in it's place)

did you try my new version? it might fit your needs better
https://forum.game-guru.com/thread/207801?page=26#msg2634886

THE NEW VERSION WORKS WITH ggc TOO?