I'm pretty sure that lithium cobalt and LiPo are still used in portable devices due to their greater energy capacity. A123's major advantage over LiPo and lithium cobalt is safety when charging and if physically compromised. LiPo has a better energy to weight ratio than A123 nanophosphate.
'Gonna get me a six pack...push people off the highway!'
"they live off the carrion of our mutual distrust and bribe us with symbols that equate hatred with manhood."
"I mean at the end of the day, I was addicted to Starting Fluid for Christ's sake!"
"Yeah, that guy sure is terrible at touching moms"