Patent ID: 7446502

Claim:
A battery charger for charging batteries of different types, the charger comprising: a seat for receiving a battery of any type having first and second terminals on one side of the battery, the seat comprising two platforms positioned at different levels; first and second electrical contacts, the first and second electrical contacts independently movable relative to the seat and being the sole electrical contacts of the battery charger; a back stop moveable relative to the seat for contacting the opposite side of the battery from the first and second electrical contacts, and an electronic circuit to supply current via the first and second electrical contacts to the battery to charge the battery, wherein each battery to be charged, irrespective of where the first and second terminals are located on each battery, is sandwiched between the back stop and the same first and second electrical contacts with the back stop moved to secure the battery in engagement with the same first and second electrical contacts and the same first and second electrical contacts moved into alignment with the first and second terminals of the battery such that the first and second terminals of every battery type engages the same first and second electrical contacts, respectively.