Dredlight

Hello!

I am very new both to this site and to the fpv hobby in general, and I have a question regarding my battery. I was soldering today and forgot to pay attention to the soldering iron, and started to hear beeping.

I was using it with 4s lipo, and the voltage displayed on iron was 10 something volts. I immediately unplugged it from the iron, and when plugged in charger to see individual cell voltage it was 2.9 on one and around 3.1 on others and around 12v total, so most likely when it was 10v on iron it was something like 2.2 v on one of the cells.

I am hesitant to use this battery for anything now. Should I dispose of it in a recycling facility or can I use it with certain limitations? (e.g. only for goggles and not charging it higher than 3.8v per cell)

Thanks to everyone and I appreciate the future guidance!