When put in alarm clocks, batteries help you wake up; when put in a sock, they help smash alarm clocks on Saturday. See what else batteries can do with this Groupon.

Choose from Three Options

• $25 for a Rayovac set of 74 batteries that include 12 D batteries, 12 C batteries, 24 AA batteries, 18 AAA batteries, and 8 9-volt batteries (a $59.25 value)
• $20 for $50 worth of batteries
$20 for $50 worth of incandescent, CFL, or LED light bulbs

Batteries Plus stocks its shelves with a wide variety of battery types and energy-saving light bulbs for all socket sizes, from control panels to residential or stadium lights. The store also carries video-game batteries of all types ($12.09–$109.99), and dimmable LED bulbs that fill rooms with up to 250 lumens of light ($16.99–$19.99).

Batteries Plus

Batteries Plus didn't add the plus moniker for marketing reasons—it earned it, carrying batteries for almost every piece of technology available. From laptops and watches to cars and commercial forklifts, the nationwide chain of more than 510 shops provides power cells for even discontinued items such as robot maids. The tech pros on staff also replace embedded batteries in vacuums, razors, and power tools, and offer recycling services for used-up batteries from cars, cordless phones, and cameras. The company’s light-bulb range is equally as expansive as its battery range, with bulbs ranging in size from the tiny bulbs popular in car panels to the stadium-size ones used in backyard Bat-Signals. Beyond batteries and bulbs, patrons can ignite yards with the glow of flameless candles, battle insects with bug zappers, or increase four-legged visibility with pet lights.

Though Batteries Plus sometimes features a discounted price online, this Groupon still offers the best deal available.