Recovering lithium batteries that have been overdischarged for a long time.

[Refrigerator]

Making the welder got me up to speed with arduino stuff and writing spaghetti code. 
Now i'm developing a simple battery analyzer with my arduino.
I plan to use the same TP4056 modules to handle charge and discharge protection but i'll add a quad CC load tuned to 1 or 2 amps.
And of course an arduino to gather data and control cycling.
The welder controller now serves as a development board for my analyzer since it will have the same LCD and encoder connections.
Not having to fight with stuff getting loose on the breadboard is nice.