The Nyko Power Grip for Nintendo 3DS is an even-better solution than the Nyko Charge Base. It's temporary, easy to use, long-lasting, and comfortable to hold. Its only drawback is that you can't use a charging cradle when you use it. If you want to add a few hours to your 3DS play time, this is a cheap and easy way to do it.
When it's on, the grip charges the 3DS, keeping the battery full and making the device think it's plugged in. When the battery in the grip runs down, the 3DS stops charging and runs off of its own internal battery. This offers much more flexibility than the Nyko Charge Base, which requires you to unscrew and remove the 3DS' rear plate (which contains the device's serial number) and attach the battery pack permanently to the system. Unfortunately, it means you can't charge the 3DS with the grip on a cradle. You need to charge the Power Grip by directly plugging it into the 3DS power cable.
Priced at $49.99, the Nyko charge station can charge up to four Wii Remotes at a time. The Charge Station comes with four NiMH rechargeable battery packs and four rubber Wii Remote battery covers. The recharge solution comes at a perfect time for those of us who are tightening their belts and trying to lower household costs. The installation of the Nyko rechargeable batteries into the Wii remote is a no-brainer. After inserting the batteries, you pick one of the four custom covers that make for charging the remotes simple.