We've talked about Philips Xenium cellphones long battery life before, but the new Xenium 9@9j goes one better: it's the first to use "BackuPower" battery technology. Slot an AAA battery into the phone, and the April-bound 9@9j will slurp power from it when its standard Li-ion battery goes flat, giving you an extra three hours of talk time. Its the first cellphone to do this, and though it increases its size, those extra hours are going to be useful for people who spend time away from power sockets. [Techdigest]