Duracell MN21 Alkaline Batteries, Pack of 2

Batteries are the unsung heroes of our daily lives. They quietly power our devices, making it possible for us to stay connected, work, play, and explore. In this guide we'll walk you through the basics, helping you make informed decisions about which batteries to buy and how to care for them.

Alkaline batteries
These are the most common and are perfect for everyday use. They're found in remotes, toys, and countless other devices. Alkaline batteries are disposable, so once they run out of juice, it's time to recycle.

Rechargeable batteries
If you're tired of constantly buying disposable batteries, rechargeables are the way to go. They're eco-friendly and cost-effective in the long run. Popular options include nickel-metal hydride (NiMH) and lithium-ion rechargeable batteries.

Lithium batteries
For high-performance needs, such as digital cameras, GPS devices, and flashlights, lithium batteries are top-notch. They have a longer lifespan and work better in extreme temperatures.

Button cell batteries
Tiny but mighty, these flat, coin-shaped batteries power things like watches, hearing aids, and some small electronic devices.

Specialty batteries
Some gadgets have unique power needs, like zinc-air batteries for hearing aids. Make sure you know what your device requires before purchasing.

• AAA Batteries: Slightly smaller than AA batteries, AAA batteries are used in smaller devices like TV remotes, computer mice, and some portable electronics.

• 9V Batteries: These rectangular batteries are commonly found in smoke detectors, alarm clocks, and some remote controls. They have a unique shape and voltage.

• Button Cell Batteries: These come in various sizes and are often used in small devices like watches, car key fobs, calculators, and some medical equipment. Common button cell sizes include CR2032, CR2025, and LR44.

• C Batteries: Larger than AA and AAA batteries, C batteries are often used in medium-sized devices like lanterns, portable radios, and some larger toys.

• D Batteries: These are the largest cylindrical batteries you'll commonly encounter. They're used in some bigger torches and large toys.

Remember, choosing the right battery isn't just about finding the right fit for your device.  Think about the brand quality and being mindful of the environment. We hope this guide gives you the power make an informed choice.