Nintendo continues to see improving sales for its 3DS handheld, especially now that there are such strong games to play on it, but the device's short battery life is still a sticking point for a lot of people. There's a new third-party solution out in Japan that promises to improve the 3-4 hour play time you get with a stock unit to more than 10, Andriasang reports. It's definitely of the "warranty voiding" variety, since you actually have to remove the handheld's rear covering and replace it with the battery pack, making your 3DS 9mm thicker in the process.
The battery pack comes from Japan Trust Technology and it's available in multiple colors: white, red and pink for roughly $130 U.S. dollars (¥9,980) or blue and black for roughly $120 U.S. dollars (¥9,480). Andriasang hasn't actually tested the product, but you can see it yourself, as well as pics detailing the installation process, on JTT's website.