Originally Posted by theducks
Technician mode on:
Voltage, Discharge capacity and (power) cell technology are NOT the only specification when buying a replacement battery.
Other factors are Form Factor (shape), Terminal or Lead-connector configuration-size.
If you have a lot of specialized electronics assembly tools, you might be able to modify an existing battery pack.
I don't recommend you try it. You do it wrong and you may damage your PEZ or create a fire.
Those Laptop battery fires in the news, were Li-ion batteries that charging monitoring failed.
The battery in the PEZ is physically larger than that LG phone battery (I have that battery in my phone)
Technician mode off:
I am disappointed that Jinke chose a non-common battery pack for the re-supply problems you have noted.