A system and method for recharging secondary batteries. One embodiment of the present invention comprises a supervisory circuit, a voltage converter, a portable power source, and one or more of a holder and a socket. The holder is adapted to receive a specific type of secondary battery of a portable...http://www.google.co.uk/patents/US6624616?utm_source=gb-gplus-sharePatent US6624616 - Portable battery recharge station
