| 摘要 |
a first step(31) of converting to battery back-up in case of an electric current stoppage in the main routine operation of an ups; a second step(32,33) of selecting the discharge curve according to the present output current(Idc) by detecting the present output current(Idc) and voltage(Vdc) of the battery; a third step(34) determining the back-up time; a forth step(35) of displaying the determined back-up time, and ending when Vdc is the end voltage or the back-up time is "0"; and a fifth step(36) of proceeding the second step(32,33) when the ending Vdc is not the end voltage and the back-up time is not"o".
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