| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device, a battery, and a battery replacement method, capable of improving efficiency in battery replacement work.SOLUTION: A power supply device comprises: a battery 3 having a terminal 31, and a first cable 33 extending from the terminal 31; a casing 2 housing the battery 3, and to which an opening 26a for taking out the battery 3 to exterior is formed; and a second cable 41 for supplying power from an external power supply to the battery 3. The first cable 33 and the second cable 41 are electrically connected at a position operable from the exterior of the casing 2. |
