Firstly, I know this is an old topic, but the problem still exists today. I do understand and have seen the countless videos of the drastic puncturing of the batteries to cause them to ignite/explode. I also do understand that the gases emitted to cause the bloating are all toxic.
However, I would like to know if anyone has good (objective evidence) of what happens if you just nick the foil of the battery with a pin to allow the gases to release (outdoors, say)? Would this cause an ignition event as well? Any research papers anyone has seen reporting on this? I could only find reports where they do the penetration test with a nail, and measuring the gases released from those events (e.g.
https://www.mdpi.com/2313-0105/2/1/5/pdf), but could not find any on the small scale (e.g. batteries that have a built in vent).
Some background: I've actually had a bloated battery in my Samsung tablet, and was trying to remove/replace it. Voltage was still good, but bloated enough to cause the tablet's case to be deformed. The battery was glued via double side tape to the bottom of the case. When I pulled on the battery to remove, I somehow ripped the foil. This released the gas (unintentionally), but I observed that the battery deflated to its original form, and voltage etc was fine. I've also seen some videos that do it (e.g.
. though I think some videos are being removed due to safety concerns), but never the "science" behind it. After puncturing the bloated battery, he seals the hole again to prevent air/oxygen from entering it. I've also watched BigClive test a bloated battery (
), which read a low voltage. He deconstructed the battery (which was discharged) and did a little experiment of pressing the seperated plates of the battery back together, and could see that the voltage went up from something like 2V to about 3+V.
Thanks in advance for any info!