CR123A Lithium Batteries
CR123A 3V lithium batteries for smoke alarms, security sensors, tactical flashlights, smart locks, cameras, and emergency kits. Compare trusted brands, bulk packs, and long-shelf-life options in one focused store.
CR123A Cross-Reference: 123A, CR17345, CR17335
Searching by a different code? CR123A batteries are commonly listed under these names. Always confirm the label printed in your device manual before ordering.
Shop CR123A Lithium Batteries
Each product is available in multiple pack sizes — pick what fits your device count and storage needs.
Duracell CR123A 3V Lithium Battery
High-power 3V lithium cell from a familiar battery name — strong for smoke alarms, security devices, smart home gear, and high-output flashlights.
Panasonic Industrial CR123A Lithium Battery
Industrial-grade 3V lithium cell from an established manufacturer. Consistent performance for sensors, security devices, photo equipment, and pro gear.
Panasonic CR123A Photo Lithium Battery
Compact photo lithium pack for camera accessories, flash units, and travel kits. Reliable backup power in a small format from a trusted name.
Streamlight 85177 CR123A Lithium Battery
Designed for high-intensity flashlights and tactical lights. Strong fit for users who already own Streamlight gear or rely on bright lights regularly.
Amazon Basics CR123A Lithium Battery
Practical everyday 3V lithium pick with up to 10-year shelf life. Useful for backup drawers, flashlights, sensors, and general CR123A replacement.
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Voniko CR123A 3V Lithium Battery
High-capacity 123 lithium cell compatible with CR17345 devices. Practical pick for smoke alarms, flashlights, and home automation gear.
Allmax CR123A Maximum Power Lithium Battery
Long-lasting, leak-resistant 3V lithium with a 10-year shelf life. Sized between household and bulk packs — fits wireless security and smart home gear.
NINMAX CR123A 3V Lithium Battery
High-capacity 1700mAh 3V lithium cell built for high-intensity flashlights, home safety devices, and security systems that demand strong output.
POWEROWL CR123A 3V Lithium Battery
High-capacity 123A / 123 / C123 lithium cell for flashlights, sensors, cameras, and other electronics that go through CR123A batteries quickly.
DURNERGY CR123A Lithium Battery
3V lithium cell with a 10-year shelf life and CR17345 / CR17335 compatibility. Value-focused pick for everyday replacement and emergency storage.
Tenergy 1500mAh 3V CR123A Lithium Battery
Bulk-friendly 1500mAh CR123A with PTC protection. Practical for property managers, technicians, and anyone maintaining many CR123A-powered devices.
Rapthor CR123A Lithium Battery
Bulk-quantity 1650mAh 3V lithium with UL certification and built-in PTC protection. Strong value for security, alarms, microphones, and multi-device homes.
I use these in our home alarm system. This is the second time I have purchased these and I regularly replace the batteries in the sensors yearly. These work great and are a very good price.
My daughter needed to replace the batteries in her home security system. They are a great value for the money. She was able to easily open and replace the batteries. They work perfectly for her. Highly recommend.
These batteries work well with my alarm system. The quality is excellent and lasts one year.
I’ve been using the Duracell CR123A 3V Lithium Batteries in my monitored smoke detectors for years. I typically get 5 years out of a set of batteries before they need replacing. I’ve never had any issues with the Duracell CR123A batteries such as leaking or premature failures.
So far, so good. These were perfect for my device. Easy to install and worked great! Will still have to see about the battery life over time. But they were a great price for the quantity.
Great deal on these batteries that fit lights for firearms.
What Is a CR123A Battery?
A CR123A battery is a compact 3V lithium cell built for devices that need dependable power in a small format. Unlike ordinary household alkaline batteries, CR123A lithium cells deliver high energy density and long shelf life — which is why they show up in security sensors, smoke alarms, tactical flashlights, smart home devices, cameras, microphones, and emergency gear.
The chemistry is what makes CR123A batteries useful for equipment that may sit unused for months and still need to work instantly. A remote control can tolerate a weak battery; a flashlight, alarm, or motion sensor cannot. CR123A cells are designed for that exact reality — stable voltage, low self-discharge, and ready-to-go performance.
On the label you may see CR123A, 123A, 123, CR17345, CR17335, or “photo lithium.” These usually describe the same 3V lithium format used across cameras, flashlights, sensors, and security devices. The safest approach is always to match the exact battery name printed in your device manual.
Devices That Use CR123A Batteries
CR123A batteries power equipment that often matters more than ordinary household electronics — security devices, safety alarms, high-output flashlights, smart locks, and emergency gear. Here is where they fit best.
Home Security & Sensors
Wireless motion detectors, glass-break sensors, door/window sensors, and alarm panel accessories. Long shelf life means the sensor is ready when triggered, even after months of standby.
Smoke & Carbon Monoxide Alarms
Some smoke alarms and CO detectors call for a 3V lithium CR123A. Always match the exact battery type the alarm manufacturer recommends — safety devices are not the place to substitute.
Tactical & EDC Flashlights
Compact, high-output flashlights, weapon lights, and headlamps rely on the CR123A for bright output in a small body. Bulk packs are popular for outdoor, work, and emergency use.
Smart Home Devices
Smart locks, motion sensors, door sensors, thermostats, and home-automation accessories often run on CR123A cells. Multi-packs help avoid downtime across several connected devices.
Cameras & Photo Equipment
CR123A photo lithium batteries have a long history in cameras, flashes, and accessories. A 4-pack fits comfortably in a camera bag for travel and event shoots.
Emergency & Preparedness Kits
Backup flashlights, emergency radios, vehicle kits, camping supplies, and outage drawers. With up to a 10-year shelf life, CR123A cells stay ready for the moment they are actually needed.
Choosing the Right CR123A Pack Size
The right CR123A pack depends on how many devices you maintain, how often you replace batteries, and whether you keep a backup supply.
4-Pack & 6-Pack
Right size for one or two household devices, a flashlight, or a single smoke alarm. Practical picks include Panasonic, Duracell, Amazon Basics, and Voniko.
12-Pack & 16-Pack
Better fit for smart homes, security systems, and regular replacement. POWEROWL, DURNERGY, Streamlight, NINMAX, and Allmax cover this tier comfortably.
40-Pack
Built for property managers, technicians, workshops, and preparedness-focused buyers. Rapthor and Tenergy are strong picks at this volume.
Compatibility & Safety Notes
CR123A batteries are typically 3V non-rechargeable lithium cells. They may also appear as 123, 123A, CR17345, CR17335, or photo lithium depending on the device or manufacturer. Before replacing a battery, always check the device manual.
- Do not mix old and new batteries in the same device.
- Do not mix different brands or chemistries in the same device.
- Do not attempt to recharge non-rechargeable CR123A lithium batteries.
- Do not use a 3.7V rechargeable battery in a CR123A device unless the device manufacturer explicitly allows it.
- Store batteries away from heat, moisture, metal objects, and children.
- Replace batteries promptly when a device gives a low-battery warning.
Frequently Asked Questions
CR123A Batteries focuses on CR123A 3V lithium batteries used in flashlights, security systems, smoke alarms, smart home devices, cameras, sensors, microphones, toys, and emergency equipment. The store covers CR123A, 123A, CR17345, CR17335, and compatible 3V lithium battery formats.
CR123A Batteries is a focused online store for CR123A lithium batteries from established battery brands and selected value-focused manufacturers. Because the store is built around one product category, it is easier to compare pack sizes, use cases, shelf life, and compatibility in one place.
CR123A batteries are commonly used in high-intensity flashlights, tactical lights, wireless security sensors, smoke alarms, smart locks, home automation devices, cameras, photo accessories, microphones, medical accessories, toys, and emergency gear. Always check the device manual before replacing the battery.
Most CR123A batteries are non-rechargeable 3V lithium cells and should not be recharged. Some rechargeable batteries may look similar but often have a different voltage and may not be safe or suitable for every CR123A device. When in doubt, follow the device manual.
CR123A, 123A, and CR17345 typically refer to the same general 3V lithium battery size used in many cameras, flashlights, sensors, and security devices. Some manufacturers use different naming formats, so the safest approach is to match the label listed in the device manual.
Yes — some smoke alarms and home safety devices use CR123A 3V lithium batteries. The battery must match the exact battery type recommended by the alarm manufacturer. For safety devices, never substitute a different voltage or chemistry unless the device manual clearly allows it.
For high-intensity flashlights, choose 3V lithium CR123A batteries from brands such as Streamlight, Duracell, Panasonic, Tenergy, NINMAX, or other high-output options. Users who rely on flashlights often may prefer 12-pack or 40-pack options for better long-term value.
A 4-pack or 6-pack is usually enough for one or two household devices. A 12-pack or 16-pack is better for homes with several smart sensors, alarms, or flashlights. A 40-pack is practical for bulk users, property managers, security systems, workshops, and emergency storage.
Many CR123A lithium batteries offer long shelf life, with some products rated for up to 10 years when stored properly. Shelf life depends on the brand, battery design, and storage conditions. Keep batteries in a cool, dry place, ideally in their original packaging.
Runtime depends on the device and how much power it draws. A security sensor may run for months or longer, while a high-output flashlight can drain batteries much faster. Device settings, temperature, usage frequency, and battery capacity all affect performance.
Bulk CR123A batteries are a good choice for customers who maintain many compatible devices or want a ready backup supply. Larger packs are useful for security systems, smart homes, flashlights, cameras, microphones, workshops, rentals, and emergency kits.
No. CR123A batteries can differ by brand, capacity, shelf life, protection features, leak resistance, manufacturing standards, and pack size. A low-cost battery may be fine for simple devices, while security systems, smoke alarms, and tactical flashlights may justify a more trusted or higher-performance option.
No. CR123A batteries should not be used as replacements for AA or AAA batteries unless the device is specifically designed for CR123A cells. CR123A cells are typically 3V lithium, while AA and AAA batteries usually have a different voltage and size.
Store CR123A batteries in a cool, dry location away from heat, moisture, direct sunlight, metal objects, and children. Keep them in their original packaging when possible, and never carry loose batteries with coins, keys, tools, or other metal items.
A CR123A-focused store makes it easier to choose the right battery for devices that need compact 3V lithium power. Instead of searching through unrelated battery types, you can compare CR123A pack sizes, brands, shelf life, capacity, and common use cases in one place.