One of the biggest shortfalls of the Nintendo 3DS's feature set is its brief battery life, which Nintendo estimates to be as short as three hours. Where we see a disappointing feature, accessory manufacturer Nyko sees an opportunity.

The company has revealed the $20 Power Pak +, a battery pack that clips to the back of the 3DS and "doubles" the battery life of the unit. It'll be out on launch day. One week later, Nyko will ship the $30 Charge Base, a charging dock for the Power Pak + (one of which is included with the package), that replaces the existing 3DS charging cradle.

As a bonus, the Power Pak + subtly enhances the 3D-ness of the 3DS -- not by doing anything to the screens, but by making the unit take up more 3D space.

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LOS ANGELES - March 8, 2011

Nyko Technologies today announced two new accessories set to debut with the launch of the new Nintendo® 3DS handheld system this March. On launch day Nyko will release the Power Pak+, a high capacity rechargeable battery pack for Nintendo 3DS that offers double the capacity and battery life of the original 3DS battery. One week later Nyko will release the newest Charge Base, designed to store your Nintendo 3DS and make sure it's always fully juiced with easy drop-in charging.

"Every new console or game system launch is an opportunity for us to find ways to improve the user's experience with the device through innovative technology," said Chris Arbogast, director of marketing, Nyko Technologies. "We are proud to be able to bring our robust knowledge of charging technology to the 3DS user base by providing users the ability to substantially increase their play time."

The Nyko Power Pak+ for Nintendo 3DS is a high-capacity rechargeable battery pack that offers double the battery life of the original 3DS battery. The Power Pak+ features debossed finger rests for improved control and comfort. The Power Pak+ will be available March 27 for $19.99.

The Nyko Charge Base for Nintendo 3DS is a drop-in charging and storage solution for the new handheld device. Each Charge Base includes a Power Pak+ rechargeable battery pack. The Charge Base features an on/off switch as well as LED indicator lights that let you know when your battery is charging and when it has finished. The Charge Base for Nintendo 3DS will be available shortly after the system's launch for $29.99.

Both the Power Pak+ and the Charge Base utilize the standard 3DS AC adaptor for recharging.

Connect with Nyko for a chance to win exciting Nyko prizes at @nykotech or on Facebook.

This article was originally published on Joystiq.