Patent ID: 8827484

Claim:
An electronic adapter circuit for charging and/or recharging a battery of a first battery type utilizing a charging device for a battery of a second battery type, wherein the first and second battery types are different, said electronic circuit comprising: a first pair of electrical connections for connecting to a charging device for a battery of the second battery type; a second pair of electrical connections for connecting to a battery of the first battery type; and an electronic circuit connected between said first and second pairs of electrical connections for controlling the charging of the battery of the first battery type when the battery of the first battery type is connected to said second pair of electrical connections and a battery charging device for a battery of the second battery type is connected to said first pair of electrical connections, wherein said electronic circuit has a high conductivity when a battery of the first battery type connected to said second pair of electrical connections provides electrical power to a load connected to said first pair of electrical connections, and has a reduced conductivity for limiting charging of a battery of the first battery type when a battery of the first battery type is connected to said second pair of electrical connections and a battery charging device for a battery of the second battery type is connected to said first pair of electrical connections.