According to this Reuters story (which probably requires an NY Times free account to read), batteries.com just agreed to stop infringing a patent owned by 3M on some sort of Li battery technology. No idea what specific product(s) might be involved or what they are branded under.
http://www.nytimes.com/reuters/business/business-threem-lawsuit.html
http://www.nytimes.com/reuters/business/business-threem-lawsuit.html