Hello,
I have taken out those two batteries from a device that needs both.
Clearly, the one on the right is dead and needs replacing.
However, I'm wondering about the state of the one on the left as it was manufactured at the same time.
Considering how expensive it is to come by the same model in France, I'd rather avoid buying two when one would be enough.
Here, I have a bench power supply, a bench DMM, an oscilloscope, a few ESP32s or arduino, even a RedPitaya but I doubt this one would be of any help here without specialized apparatus.
Many thanks for any suggestion.
