today announced an iPod battery upgrade that utilizes nanoparticle technology to "dramatically extend battery lifespan." This upgrade is available for first, second, and third generation iPods and comes with a 2-year warranty and 30 day money back guaranty. The FastMac upgrade replaces the iPod’s original internal Lithium-Polymer or Lithium-Ion battery with a larger capacity and longer lasting "advanced power cell." The upgrade offers up to 70 percent more capacity than the original and up to 7.5 times as many charge cycles, according to the manufacturer. "This is accomplished through the use of patented nanoparticle technology codenamed TruePower, which significantly slows the degradation of the battery." Pricing ranges from $30 to $40.

"FastMac’s TruePower technology protects and prevents damage to the battery’s internal lithium crystal matrix caused by power spikes. These spikes occur when an iPod demands a sudden high current peak, for example to turn on the backlight or load the next few songs. Over time they decrease capacity, runtime, and battery life, eventually rendering the power cell unusable. "

"Through the use of TruePower technology the upgrade is able to smooth out these power spikes. This protects the battery and leads to a longer lifecycle. Without the TruePower technology the power cells are left unprotected and would steadily decrease in capacity after each charge cycle."