Keep shooting all day (and longer) with the UltraPro 4-Battery Kit. With four extended-life high-capacity batteries, a USB Dual-Battery charger, and additional handy accessories, you'll have everything you need to get the most out of your camera. Our batteries meet or exceed OEM specifications and feature lithium-ion technology, so there's no memory effect to worry about. The latest battery technologies are built in, including automatic voltage regulation, thermal circuit protection, and more. Batteries are covered by a 3-year warranty, so you can shop with confidence.