Patent ID: 8671509

Claim:
A cordless cleaning system, comprising: a rechargeable battery pack having a battery pack housing and at least two cells within the housing, a first power terminal, a second power terminal, and a communication terminal; a first cordless cleaning device operable to selectively removably receive and be powered by the rechargeable battery pack, the first cordless cleaning device including a first battery pack recess sized to receive the rechargeable battery pack, a portion of the battery pack housing being insertable into the first battery pack recess, the first cordless cleaning device configured to receive power from the first power terminal and the second power terminal and communicatively connect to the battery pack over the communication terminal; and a second cordless cleaning device operable to selectively removably receive and be powered by the rechargeable battery pack, the second cordless cleaning device including a second battery pack recess sized to receive the rechargeable battery pack, the portion of the battery pack housing being insertable into the second battery pack recess, the second cordless cleaning device configured to receive power from the first power terminal and the second power terminal and communicatively connect to the battery pack over the communication terminal, wherein the first device is a first type of cleaning device and the second device is a second type of cleaning device, the first type being different than the second type, and wherein at least one of the first device and the second device has an upright working position.