Patent ID: 9337677
Filing Date: 2016-05-10
CPC Classification: H01M,H02J,Y02E

Claim Text:
1. An adapter for connecting a main body of an electric power tool and at least one battery pack to each other, the adapter comprising: a connecter portion configured to be detachably attached to the main body of the power tool; at least one battery receiving portion each configured to be detachably attached to any one of first and second battery packs alternatively, the first battery pack being configured to output an alarm signal when the first battery pack is in a predetermined condition and the second battery pack being configured not to output the alarm signal even when the second battery pack is in the predetermined condition; a power supply circuit configured to electrically couple the first battery pack or the second battery pack attached to the battery receiving portion to the main body of the electric power tool attached to the connecter portion; a measuring portion configured to measure an index corresponding to a charged level of the first battery pack or the second battery pack attached to the battery receiving portion; a signal receiving portion configured to receive the alarm signal outputted from the first battery pack attached to the battery receiving portion; and a controller portion configured to: