The actual battery capacity is 15.44Wh / 10.8V =1.429Ah
2014 laptop battery, design capacity 47.52Wh / 10.8V =4.4Ah
Laptop battery label open
Replace battery test capacity
Replace battery parallel balancing voltage
Replace the battery capacity around 2.6Ah
Battery spot welding
Do not disconnect the old battery cable, Replacing the battery in parallel with the old battery mode.
BMS needs to re-identify capacity, Charge to 12.30V 100% and discharge to 9V 0% , Loop operation 3 times.