BATTERY PACK, POWER TOOL, BATTERY CHARGER, AND POWER TOOL SET

摘要

PROBLEM TO BE SOLVED: To reduce costs by configuring a power terminal and a signal terminal for a battery pack with a common component; to maintain a stable connection state when the battery pack is attached to a power tool; and to avoid an excess insertion/removal load when the battery pack is attached to a battery charger.SOLUTION: A battery pack includes a first terminal 20a and a second terminal 20b. The first terminal 20a and the second terminal 20b are common components having substantially the same shape which are formed so as to be capable of holding male terminals 101a, 101b, 201a, and 201b respectively formed on attachment parts 101 and 201 of a power tool 100 and a battery charger 200. Fitting pressure with respect to the male terminals 101a and 101b of the power tool 100 is larger than fitting pressure with respect to the male terminals 201a and 201b.