Fastmac today announced that it has begun shipping its high-capacity, extended life battery upgrade for Apple’s PowerBook Pismo computer. The new 84 Whr battery uses Lithium-Ion cells (with integrated charge indicator LEDs) that provide up to 68% more capacity than the original Apple battery, notes the company. Fastmac’s TruePower battery for the PowerBook Pismo is available now for a special introductory price of US$139.95 and can be combined with a G4 550 MHz processor upgrade for a special bundle price of $349.95 (a $50 savings). Each battery carries a 1-year warranty and a 30-day money back guarantee.