| 摘要 |
The utility model provides a battery backup device which comprises a first connector, a second connector, a data wire, a storage unit and a charging unit. The data wire transmits data which is provided by the outer part to the second connector by the first connector; the storage unit is connected to the data wire, so as to selectively store the data; the charging unit receives a first supply voltage which is provided by the outer part by the first connector and charges with the first supply voltage, so as to selectively regulate voltage level of the charging supply voltage and output a second supply voltage to the second connector. |
