Other World Computing (OWC) and NewerTech have announced the addition of the highest capacity battery ever made for the 15-inch Ti'Book—the High-Capacity Lithium-Ion Replacement Battery.

"Titanium G4 owners who buy today can now achieve the highest capacity run times ever," said Larry O'Connor, president. "The longer life span of NewerTech NuPower batteries translates into long term economical and environmental savings."

The newest addition to the NuPower Lithium-Ion battery family is rated at 74W Hours, providing up to 48-percent more run time capacity than Apple factory-shipped batteries. Ti'Book battery prices start at $140.

And, of course, NewerTech's laptop battery rebate program will give you up to $19 off the purchase price of a new NuPower battery for each Apple battery you return for recycling.