Patent ID: 8798945

Claim:
A computer-implemented method, the method comprising: (a) controlling a power supply to charge a rechargeable battery under a first protection current, wherein the first protection current protects the power supply from damage during charging of the rechargeable battery; (b) controlling a test device to measure terminal voltages and rechargeable currents of the rechargeable battery when the rechargeable battery is charged, and obtaining a first plurality of terminal voltages and a first plurality of rechargeable currents of the rechargeable battery; (c) controlling the power supply to discharge the rechargeable battery under a second protection current, wherein the second protection current protects the power supply from damage during discharging of the rechargeable battery; (d) controlling the test device to measure terminal voltages and electronic currents of the rechargeable battery when the rechargeable battery is discharged, and obtaining a second plurality of terminal voltages and a second plurality of electronic currents of the rechargeable battery; (e) creating a first lifecycle curve based on the first terminal voltages and the first rechargeable currents, and creating a second lifecycle curve based on the second terminal voltages and the second electronic currents; (f) comparing the first lifecycle curve with a predetermined charge lifecycle curve, and comparing the second lifecycle curve with a predetermined discharge lifecycle curve; and (g) generating a lifecycle estimation report of the rechargeable battery according to the comparison results, and displaying the lifecycle estimation report on a display screen.