Hi, just saw an add for the new Duracell AA ultra lithium [ primary] battery. cant find much info about this on battery review sites, maybe too new, only just been released apparently, just wondered if any body else has come across this yet and is it better than the energizer lithium. They say it is the most powerful lithium AA battery yet useing M3 technology what ever that is ? I wonder what the miliamps is rated at ?. Anybody know anything else about this battery.