New Scientist is reporting that Altair Technologies has a new Lithium ion battery that uses lithium titanate nanocrystals to significantly decrease the recharge time (to minutes) and significantly increases the number of recharge cycles the battery can tolerate.
On top of this Science Daily is reporting that Georgia Tech scientists are using probabilistic bits (PBITs) to construct probablistic transistors (PCMOS) which use 100 times less power than conventional transistors.
The combination of these two approaches would yield a laptop that could probably last a week without recharging (which is great for long conferences) and wouldn't need a new battery every 6-12 months.