Turns out the gradual loss of ability to hold charge in lithium ion batteries might be in part due to PET tape used to assemble the batteries themselves.
This is a HUGE discovery and will potentially impact a ton of consumer electronics:
I cannot believe how much we all just collectively thought of plastic as this harmless, completely inert thing, when it's been offgassing uncontrollably the whole fucking time in all kinds of situations
can't wait for "PET-free" battery replacements to start landing, I guess
