The charging was performed with setup in presented in Figure1.
I have used the source with current limiter, and connected the cells via crocodile connectors.
The voltage raise was controlled and each cell was charged to 3.5V.
Each contact of power supply was resoldered with Weller machine.
After charging in laptop to nominal voltage battery is holding for about two hours of average work.
Obviously, the battery was in stock for too long and the cells discharged.
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