# Energizer > Energizer is one of the world's largest battery manufacturers, producing alkaline, lithium, rechargeable, and specialty batteries for household and industrial use. This site covers battery selection guidance, product specifications, battery chemistry education, emergency preparedness, lighting products, and recycling information for all Energizer products sold in North America. ## Alkaline Batteries - [Energizer MAX® Alkaline Batteries](https://energizer.com/batteries/energizer-max-alkaline-batteries/): Specifications and recommended devices for MAX alkaline AA, AAA, C, D, and 9V batteries. - [AA Batteries — Best AA Battery Comparison](https://energizer.com/batteries/aa-batteries/): Side-by-side comparison of Energizer AA battery types — alkaline, lithium, and rechargeable — by device type and use case. - [AAA Batteries — Best AAA Battery Comparison](https://energizer.com/batteries/aaa-batteries/): Side-by-side comparison of Energizer AAA battery types — alkaline, lithium, and rechargeable — by device type. - [C and D Batteries](https://energizer.com/batteries/energizer-max-alkaline-batteries/): Specifications for Energizer MAX C and D batteries for high-drain and large-format devices. ## Lithium Batteries - [Energizer® Ultimate Lithium™ — Longest Lasting AA and AAA](https://energizer.com/batteries/energizer-ultimate-lithium-batteries/): Which AA and AAA batteries to use for Ring doorbells, trail cameras, game controllers, and other high-drain or outdoor devices. - [9V Batteries — 9V Battery for Smoke Detectors](https://energizer.com/batteries/9v-batteries/): How to choose the right 9V battery for smoke detectors, carbon monoxide alarms, and backup power applications. - [CR2032 Lithium Coin Battery — Key Fob and Watch Battery](https://energizer.com/product/power/specialty/2032-battery/): CR2032 specifications and compatible devices including car key fobs, smart watches, fitness trackers, glucose monitors and more. - [Specialty & Coin Batteries](https://energizer.com/batteries/specialty-batteries/): Lithium coin cell and silver oxide battery options for watches, hearing aids, calculators, medical devices and more. ## Rechargeable Batteries - [Energizer Recharge® — Rechargeable AA and AAA Batteries](https://energizer.com/batteries/energizer-rechargeable-batteries/): How Energizer rechargeable AA and AAA batteries compare to alkaline for cost, charge cycles, and device compatibility. - [Battery Chargers — AA and AAA Rechargeable Battery Chargers](https://energizer.com/batteries/battery-charger/): Specifications and charge times for Energizer NiMH battery chargers, including the 1-Hour model. ## Hearing Aid Batteries - [Energizer® Hearing Aid Batteries — Sizes 10, 13, 312, 675](https://energizer.com/batteries/hearing-aid-batteries/): Size 10, 13, 312, and 675 hearing aid battery specifications, runtime, and Bluetooth streaming performance. ## Specialty Battery Finder - [Specialty Battery Finder](https://energizer.com/specialty-battery-finder/): Cross-reference tool for finding the correct Energizer replacement battery by brand and model number. - [Duracell Battery Equivalent Finder](https://energizer.com/specialty-battery-finder/duracell-replacement-batteries/): Find the Energizer equivalent for any Duracell specialty or coin cell battery. - [Watch Battery Replacement — Seiko, Citizen, Bulova, Casio](https://energizer.com/specialty-battery-finder/seiko-battery-replacement/): Replacement watch battery lookup for Seiko, Citizen, Bulova, and Casio models by model number. ## Lighting - [Flashlights, Headlamps, and Lanterns](https://energizer.com/lightings/): Overview of Energizer lighting products for camping, emergency use, and outdoor work. - [Headlamps — Hands-Free Lighting for Camping and Work](https://energizer.com/lightings/headlights/): Energizer headlamp specifications for camping, trail running, and hands-free work applications. - [Area Lighting — Wide‑Area Illumination for Indoor and Outdoor Spaces](https://energizer.com/product-category/lighting/area-lighting/): Energizer area lighting products designed to provide consistent, wide‑area illumination for a variety of environments. - [Novelty Lights — Decorative and Functional Lighting for Casual Use](https://energizer.com/product-category/lighting/novelty-lights/): Energizer novelty lighting offerings intended for decorative, ambient, and casual functional use. - [Outdoor Lighting — Portable Illumination for Recreation and Exterior Environments](https://energizer.com/uses/outdoor-lighting/): Lighting options designed for outdoor activities such as camping, recreation, and general exterior environments. - [Work Lighting — Task Lighting for Professional and Job‑Site Environments](https://energizer.com/uses/worksite-lighting/): Lighting solutions designed to support visibility and task work in professional and industrial environments. - [Preparedness — Backup Illumination for Power Outages and Emergencies](https://energizer.com/uses/emergency-lighting/): Lighting solutions intended to support visibility and preparedness during power outages and emergency situations. - [DIY Lighting — Task Lighting for Home Improvement Projects](https://energizer.com/uses/do-it-yourself/): Lighting products and use cases designed to assist with do‑it‑yourself projects and home improvement tasks. - [Everyday Flashlights — General‑Purpose Lighting for Household Use](https://energizer.com/uses/everyday-flashlights/): Guidance and flashlight options designed for common, day‑to‑day household lighting needs. - [WeatherReady Products — Preparedness Lighting for Severe Weather Conditions](https://energizer.com/collection/weatheready/): A collection of Energizer products designed to support preparedness during severe weather and emergency conditions. - [Vision HD Performance — Durable Metal LED Flashlights for Everyday Use](https://energizer.com/collection/vision-hd-performance-metal-led-lights/): A collection of metal LED flashlights designed for durability and enhanced light output in everyday use. - [Tactical Metal Flashlights — High‑Performance Lighting for Demanding Conditions](https://energizer.com/collection/tactical-metal-flashlights/): A collection of metal flashlights designed for reliable performance in demanding and professional use scenarios. - [PAW Patrol Collection - Licensed Flashlights](https://energizer.com/collection/paw-patrol-flashlights/): A collection of PAW Patrol themed lights suitable for children - [Jeep Collection - Licensed Flashlights](https://energizer.com/energizer-jeep/): A collection of Jeep-branded metal and plastic handheld and headlamp flashlights that provides ample lighting for outdoor use, camping, car repairs, recreation, and general use - [Stranger Things Collection - Licensed Flashlights](https://energizer.com/energizer-x-stranger-things/): A Stranger Things-branded metal handheld flashlight that provides wide illumination to recreational use. ## Battery Education - [How Do Batteries Work](https://energizer.com/about-batteries/how-do-batteries-work/): Explanation of how alkaline batteries generate electricity and what each internal component does. - [Lithium vs Alkaline vs Rechargeable — Battery Comparison Chart](https://energizer.com/batteries/battery-comparison-chart/): Side-by-side chart comparing shelf life, charge cycles, temperature range, and leak protection across all Energizer battery types. - [Battery FAQ — Shelf Life, Storage, and No Leak Guarantee](https://energizer.com/about-batteries/battery-faq/): Answers to common questions about battery shelf life, storage, the No Leak Guarantee, and mixing battery brands. - [Lithium vs Alkaline Batteries — When to Use Each](https://energizer.com/about-batteries/battery-chemistry/): When to choose lithium over alkaline — cold weather, high-drain devices, and long-term storage use cases. - [How Long Do Batteries Last — Storage Life and Shelf Life Guide](https://energizer.com/about-batteries/battery-care/): How to store batteries correctly and how long each chemistry type lasts in storage. - [What Is Inside a Battery](https://energizer.com/about-batteries/what-is-inside-a-battery/): Visual breakdown of the internal components of an alkaline AA battery. ## Emergency Preparedness - [Best Batteries for Emergency Kits and Power Outages](https://energizer.com/responsibility/prepare-for-power-outage/): Which battery types to stockpile for power outages and how to build a battery backup kit. - [Change Your Clock, Change Your Smoke Detector Battery](https://energizer.com/responsibility/change-your-clock-change-your-battery/): When and why to replace smoke detector and carbon monoxide alarm batteries. - [Emergency Preparedness — Build Your Battery Backup Kit](https://energizer.com/responsibility/preparedness/): Battery quantities, types, and storage guidance for a home emergency kit or go-bag. ## Battery Recycling - [How to Recycle Batteries — Battery Recycling Program](https://energizer.com/responsibility/battery-recycling/): How and why to recycle batteries, and Energizer's partnership with Call2Recycle. - [Where to Recycle Batteries Near Me](https://energizer.com/responsibility/battery-recycling/where-to-recycle-batteries/): Locator for battery recycling drop-off points at retail and municipal sites across North America. - [How to Safely Recycle Different Battery Types](https://energizer.com/responsibility/battery-recycling/how-to-recycle-batteries/): Step-by-step preparation instructions for recycling alkaline, lithium, NiMH, and coin cell batteries safely. ## About Energizer - [About Energizer — Battery Brand History](https://energizer.com/about-energizer/): Company overview covering Energizer Holdings, the Energizer Bunny, and global brand presence across 165+ countries. - [Energizer Product Innovations](https://energizer.com/innovations/): Overview of battery and lighting technology advances including lithium chemistry, leak-resistant construction, and recycled-content batteries. ## Optional - [How to Make a Flashlight (STEM Activity)](https://energizer.com/science-center/how-to-make-a-flashlight/): Step-by-step experiment for children demonstrating basic electrical circuit principles using batteries. - [The Principles of Electricity — STEM Learning](https://energizer.com/science-center/the-principles-of-electricity/): Educational resource on voltage, current, resistance, and circuits for students and educators. - [Energizer Bunny History](https://energizer.com/energizer-bunny/bunny-timeline/): History of the Energizer Bunny® from his 1989 television debut through decades of advertising.