| 摘要 |
An apparatus for powering an electric hand-held power tool device (20) by an output voltage (U) comprising
at least two connectors (J11, J21) for connecting said apparatus to at least two batteries (B1, B2)
at least two switches (10, 14)
a command circuit of said switches (10, 14), said command circuit being arranged for commanding the powering of said electric hand-held power tool device by using
- the battery (B1) which presents the highest open circuit voltage (OCV1) if said output voltage (U) is higher than the open circuit voltage (OCV2) of each of the other batteries
- the battery (B1) which presents the highest open circuit voltage (OCV1) and at least one other battery (B2) if the said output voltage (U) is lower than the open circuit voltage (OCV2) of said other battery (B2), said battery (B1) which presents the highest open circuit voltage (OCV1) and said at least one other battery (B2) being connected in parallel. |
