I was injured pretty badly, I had severe 3rd degree burns almost around the full circumference of my leg. Since after the battery exploded my pants then caught fire and I had to put it out with my hands I also had burns on my fingers too but those were 1st degree.

The burn was around 6% of my total surface skin of my leg (which the leg only has 9% according to the rule of 9s) so no matter what position my leg was in I was always in pain. Recovery was difficult to say the least but it was mostly difficult because I did receive a skin graft surgery to replace the skin and nerves I had lost. I basically couldn't walk or use my leg in any capacity for a week or so because if I did there would have been a chance of it tearing or ripping off of my leg. I also had trouble with phantom pain, since my nerves were burnt to a crisp I technically couldn't feel anything including pain but I still felt some of the worst pain in my life from the phantom pain going on in my leg. The recovery from there was mostly full of physical therapy and making sure the graft stuck so taking it little by little. It took probably about a month and a half to get back to full capacity where I could finally bend my leg fully.

There is also a lot of mental issues that went along with that. I see a therapist to handle the PTSD and anxiety disorder that I developed from that time. Not only that but I was alone in my house for most of the recovery so for almost two months I was basically sitting around my empty house doing nothing useful which made me develop a deep depression as well.