Patent ID: 9537336
Date: 2017-01-03
CPC Classifications: B25H,H02J

Claim:
1. A battery system for a power tool, comprising: two or more battery packs each having a positive battery terminal and a negative battery terminal; at least one battery holder adapted to detachably engage the two or more battery packs; and a charger adapted to detachably engage the battery holder and having a plurality of battery interfaces each adapted to simultaneously electrically communicate with one of the two or more battery packs while the at least one battery holder engages both the charger and the battery packs, wherein each battery interface comprises a positive charging output terminal and a negative charging output terminal adapted to conduct charging current to the corresponding positive and negative battery terminals of each of the two or more battery packs, wherein the plurality of battery interfaces are adapted to simultaneously electrically communicate with the positive battery terminal and the negative battery terminal of each of the two or more battery packs when the two or more battery packs are engaged with the battery holder, and wherein the plurality of battery interfaces are adapted to simultaneously electrically communicate with the positive battery terminal and the negative battery terminal of each of the two or more battery packs when the two or more battery packs are not engaged with the battery holder and the battery holder is not engaged with the charger.