Power small electronics with these Insignia AAAA batteries. They deliver consistent voltage to compatible devices such as penlights, laser pointers and headphone amplifiers. These Insignia AAAA batteries come 12 to a pack, so you can stock your desk or keep some with you during business meetings for unexpected power failures.

Only at Best BuyLenovo 100S-14IBR Laptop: Take this Lenovo Ideapad laptop with you on the road, and stay on top of work while keeping connected with clients and co-workers. Intel processing offers dependable speed for all of your programming, and Intel HD graphics provide stunning visuals. This Lenovo Ideapad laptop has a 14-inch screen, giving you room for work or streaming videos.

Logitech Wireless Mouse M325s. A better mix of precision and comfort-with designed-for-Web scrolling. Designed for how you use the Web, our newest micro-precise scrolling makes everything you love to do online easier. Its feel-good, contoured shape and textured grips help keep your hand happy-even after long hours. And with up to 18 months of battery life, it virtually eliminates the hassle of changing batteries.

Logitech Mini Mouse M187. Take it wherever you take your laptop—thanks to its pocket-ready, extra-small design. Setup is simple. Just plug in the nano receiver and start using your mouse. Plus, the receiver is small enough to stay in your USB port—and stores inside the mouse if you do need to remove it—so there’s no need to worry about losing it. You’ll enjoy the freedom of wireless with more precision and control than your laptop’s touchpad. And you get the confidence that comes with owning a mouse from the global leader in connecting you to the digital experiences you care about.