In some embodiments, a weight for each longest sustainable time duration, i.e., a weight for each discharge protection parameter, may be obtained according to the relation m=n*t, where m denotes a least common multiple of all of the longest sustainable time durations, n denotes the weight, and t denotes a longest sustainable time duration. The weighting process is described below using the settings listed in Table 1 as examples. In the example shown in Table 1 and described in corresponding text, the least common multiple of the three longest sustainable time durations is 30 s, and the weights for discharge protection parameters P1, P2, and P3 are 2 (=30 s/15 s), 3 (=30 s/10 s), and 6 (=30 s/5 s), respectively. In response to the present status parameter of the battery being determined as one of I<15 A and T<5° C., 15 A<I<25 A and T<5° C., I>25 A and T<5° C., I>25 A and 5° C.≤T<15° C., or I>25 A and T>15° C., the battery is discharged at a discharge cut-off voltage of approximately 2.8V, i.e., the discharge cut-off voltage in discharge protection parameter P1, which has a weight of 2 as discussed above. Under this discharge condition, the weighted continuous discharge time duration is twice the actual continuous discharge time duration, i.e., every second of actual continuous discharge time duration can be converted to two seconds of weighted continuous discharge time duration. In response to the present status parameter of the battery being determined as one of I<15 A and 5° C.≤T<15° C., 5° C.≤T<15° C. and 15 A<I<25 A, or 15 A<I<25 A and T>15° C., the battery is discharged at a discharge cut-off voltage of approximately 3.0V, i.e., the discharge cut-off voltage in discharge protection parameter P2, which has a weight of 3 as discussed above. Under this discharge condition, the weighted continuous discharge time duration is three times the actual continuous discharge time duration, i.e., every second of actual continuous discharge time duration can be converted to three seconds of weighted continuous discharge time duration. In response to the present status parameter of the battery being determined as I<15 A and T>15° C., the battery is discharged at a discharge cut-off voltage of approximately 3.2V, i.e., the discharge cut-off voltage in discharge protection parameter P3, which has a weight of 6 as discussed above. Under this discharge condition, the weighted continuous discharge time duration is six times the actual continuous discharge time duration, i.e., every second of actual continuous discharge time duration can be converted to six seconds of weighted continuous discharge time duration. Further, when it is determined that a sum of the weighted continuous discharge time duration(s) is greater than or equal to 30 s, a discharge protection is performed on the battery.