About Energizer Holdings
Energizer Holdings is a globally recognized leader in portable power and household solutions.
Founded in 2000 as a spin-off from Ralston Purina, Energizer Holdings has expanded its reach far beyond its flagship battery business to include a diverse portfolio of brands such as Eveready, Schick, Playtex, Armor All, and Rayovac.
However, the heart of the company lies in its iconic Energizer Batteries—the trusted energy source behind everything from high-performance flashlights to essential gear in the shooting sports industry.
The Origin of Energizer Batteries
The history of Energizer dates back to 1896, when the first consumer battery was introduced by W.H. Lawrence.
A few years later, in 1898, Eveready—a predecessor of Energizer—launched the first handheld flashlight powered by dry cell batteries. Fast forward to 1959, and the company introduced the world’s first alkaline battery, setting a new standard for portable power.
This innovation paved the way for decades of reliable battery solutions across military, industrial, and consumer markets.
Energizer Holdings continues to innovate through environmentally responsible battery technology, including rechargeable options and EcoAdvanced, the first battery made with recycled materials.
Their global reach and commitment to quality make them a go-to brand for users who demand uncompromising reliability.
Popular Energizer Battery Sizes
Energizer batteries are trusted around the world for their reliability, performance, and innovation. From high-drain electronics to everyday household devices, Energizer offers a wide variety of battery sizes to suit any need.
Below is a breakdown of the most popular Energizer battery sizes and their key applications:
- Energizer AA Batteries
The most widely used battery size, Energizer AA batteries power countless household items including remote controls, wall clocks, wireless mice, digital cameras, and more. Available in both alkaline and lithium versions, AA batteries offer long-lasting, dependable energy for everyday devices and high-performance gear.
- Energizer AAA Batteries
Slightly smaller than AA, Energizer AAA batteries are perfect for compact electronics such as TV remotes, laser pointers, flashlights, and headlamps. They're also ideal for shooting sports accessories like chronographs and compact optics.
- Energizer 9V Batteries
Known for their rectangular shape, 9V Energizer batteries are commonly used in smoke detectors, walkie-talkies, and some shooting range tools. Their high voltage makes them ideal for devices that require a quick and powerful burst of energy.
- Energizer CR123A Lithium Batteries
Compact and powerful, CR123A lithium batteries are essential in tactical flashlights, red dot sights, laser rangefinders, and night vision gear. They perform exceptionally well in extreme temperatures and are favored by law enforcement, hunters, and security professionals.
- Energizer CR2032 Batteries
The flat, coin-like CR2032 lithium battery is widely used in key fobs, digital thermometers, gun safes, and electronic sights. Energizer CR2032 batteries are known for their long shelf life and consistent performance in small electronic devices.
- Energizer C Batteries
Energizer C batteries deliver steady power to medium-drain devices like lanterns, large flashlights, and some tactical gear. These are a great option for camping trips or range days where durable power is a must.
- Energizer D Batteries
Larger than C batteries, Energizer D batteries are built for high-drain devices such as boom boxes, heavy-duty flashlights, and portable generators. They offer extended performance for gear that requires sustained power output.
Battery Do's, Don'ts, & Sizes
Whether you're at home, outdoors, or on the move, properly caring for your Energizer batteries is essential to getting the most performance, safety, and reliability from each cell.
From AA alkaline batteries to rechargeable lithium-ion packs, the following battery care tips will help you extend battery life, ensure safety, and prevent damage.
Battery Do’s: Safe & Smart Battery Practices
- Store Batteries Properly: Always keep your Energizer batteries in a cool, dry place at normal room temperature. Contrary to popular belief, refrigerating batteries is unnecessary and not recommended.
- Keep Out of Children’s Reach: Especially for coin lithium batteries, which can pose a serious health risk if swallowed. Always store batteries and devices safely.
- Install Batteries Correctly: Follow the (+) and (–) markings carefully to ensure proper orientation.
- Clean Battery Contacts: Use a soft cloth or pencil eraser to remove debris or oxidation that may prevent optimal connection.
- Remove Dead Batteries Promptly: Avoid leakage or corrosion by replacing old or dead batteries immediately and disposing of them correctly.
- Use Matching Batteries: Replace all batteries at once with the same brand, size, and type to prevent imbalances and leakage.
- Turn Off Devices When Not in Use: Preserve battery life by switching off unused devices and removing batteries when storing for long periods.
- Use the Right Charger: Always charge rechargeable batteries using the designated charger and follow manufacturer instructions closely.
- Charge at Room Temperature: Charging batteries between 68°F and 72°F helps prolong battery health and performance.
Battery Don’ts: What to Avoid with Energizer Batteries
- Don’t Burn or Disassemble Batteries: Burning or puncturing can cause batteries to leak, rupture, or explode.
- Avoid Carrying Loose Batteries: Keep batteries away from metal items like keys or coins, as they can short-circuit and cause overheating.
- Never Recharge Non-Rechargeables: Only recharge batteries marked as “rechargeable.” Charging non-rechargeables can lead to damage or rupture.
- Don’t Mix Old and New Batteries: Using batteries of different ages or types can result in leakage, poor performance, or device damage.
- Don’t Store in Extreme Heat: Heat reduces battery capacity and can increase the risk of leakage or failure.
- Don’t Overcharge Rechargeables: Overcharging can degrade battery life. Remove batteries once fully charged.
- Don’t Use the Wrong Charger: Using an incompatible charger can result in overheating or charging errors.
- Don’t Leave Rechargeables Unused for Long Periods: If not in regular use, recharge them every 6 to 9 months to prevent performance degradation.
Coin Battery Safety Reminder
Coin lithium batteries can cause serious internal injuries if swallowed. If a battery is ingested, seek emergency medical attention immediately and visit www.poison.org/battery or call 202-625-3333. Energizer is committed to child safety and offers resources to help prevent accidental ingestion.
Keep Your Energizer Batteries in Peak Condition
Following these battery care do’s and don’ts will extend the life of your Energizer products and enhance performance in every application—from household gadgets and shooting sports accessories to outdoor gear and tactical flashlights.
Looking for the best battery option for your watch, flashlight, or optic? Explore the Energizer Battery Cross Reference Guide and find the size you're looking for!
Energizer Batteries and the Shooting Sports Community
Energizer batteries are essential to shooters, hunters, and tactical professionals, providing long-lasting, dependable power for red dot sights, range finders, tactical flashlights, trail cameras, chronographs, GPS devices, and night vision equipment.
Whether you're preparing for an early morning hunt or gearing up for a 3-gun match, Energizer’s lineup—including CR123A, CR2032, AA, AAA, and 9V lithium batteries—is engineered for performance in extreme conditions.
Known for their leak-resistant design, extended shelf life, and high energy output, Energizer’s lithium and alkaline batteries are trusted by sportsmen and law enforcement alike.
Their Ultimate Lithium series, for example, performs exceptionally well in cold temperatures and high-drain devices—perfect for backcountry hunts and tactical deployments.
Popular / Common Products include:
Red Dot Sights (commonly use CR2032 or CR123A)
- Aimpoint PRO Patrol Rifle Optic – Uses DL1/3N or 2L76 batteries (Energizer equivalent: CR1/3N)
- EOTech EXPS3 – CR123A battery
- Holosun HS510C – Uses solar + CR2032 backup
- Trijicon MRO – CR2032 battery
- Range Finders (commonly use CR2, CR123A, or AA)
- Vortex Ranger 1800 – CR2 battery
- Leupold RX-1400i TBR/W – CR2 battery
- Bushnell Prime 1700 – CR2 battery
- Sig Sauer KILO2200BDX – CR2 battery
Tactical Flashlights (commonly use CR123A, 18650, or AA)
- Streamlight ProTac HL-X – Dual fuel (CR123A or 18650)
- SureFire G2X Tactical – CR123A battery
- Fenix PD35 V3.0 – CR123A or 18650
- Olight Warrior Mini 2 – 18650 rechargeable (AA-sized)
Trail Cameras (commonly use AA)
- Browning Strike Force HD Pro X – 6 AA batteries
- Bushnell Core DS No Glow – 6 or 12 AA batteries
- Moultrie A-900i – 8 AA batteries
- SpyPoint LINK-MICRO-LTE – 8 AA batteries
Chronographs (commonly use 9V or AA)
- Caldwell Ballistic Precision Chronograph – 9V battery
- MagnetoSpeed V3 – 9V battery
- Competition Electronics ProChrono DLX – 9V battery
- GPS Devices (commonly use AA or built-in rechargeable)
- Garmin GPSMAP 64sx – 2 AA batteries
- Garmin eTrex 32x – 2 AA batteries
- Magellan eXplorist 350H – 2 AA batteries
Night Vision Equipment (commonly use CR123A or AA)
- ATN X-Sight 4K Pro – Internal rechargeable + CR123A backup
- Sightmark Wraith HD – 4 AA batteries
- Pulsar Digex C50 – Rechargeable battery pack + AA as backup
- Bushnell Equinox Z2 – 4 AA batteries
