TechRestore is now offering an overnight iPod battery upgrade service for fourth-generation (4G) iPods and all color screen iPod models.
The $69 service includes overnight pickup of the iPod, same day installation of a high-capacity iPod battery and return overnight shipping. The replacement 1000mAh battery is said to offer over 50% more charging power than the original 4G iPod battery and 38% more charging power than the original color iPod battery.
A self-service 1000mAh battery upgrade is also available for $29.