HKUST lithium ion battery dataset

This dataset encompasses cycling experiments conducted on lithium-ion batteries, involving 5 distinct batches, each originating from a different manufacturer. Within each batch, there were 6 batteries subjected to testing. The battery types employed for testing included cylindrical 21700 cells and 18650 type and nickel manganese cobalt or nickel cobalt aluminum.

The testing procedure consisted of an initial Constant Current (CC) charging step, taking the batteries to 4.2 V at a rate of 0.5 C, followed by a Constant Voltage (CV) step that maintained the voltage at 4.2 V until the current dropped to 0.02 C. Subsequently, the cells underwent discharge at a rate of 1 C until the voltage reached 2.5 V.

For the light cycling profile, a similar CC-CV charging protocol was applied, with an initial CC charge to 4.1 V at 0.5 C, followed by CV charging at 4.1 V until the current decayed to 0.02 C. A constant current discharge at 1 C was then executed, with a lower voltage cutoff set at 3.0 V. In all instances, there was a resting period of 10 minutes between the charge and discharge stages. The C-rate for each cell was calculated based on the nominal capacity specified by the manufacturer.