Quick Comparison
| Product | Best For | Est. Price | Rating |
|---|---|---|---|
| Energizer CR2 Lithium | Best Overall | ~$8-$14 | 4.7/5 |
| Amazon Basics CR2 | Best Budget | ~$5-$9 | 4.6/5 |
| Panasonic CR2 Industrial | Best Premium | ~$10-$16 | 4.7/5 |
| Duracell Ultra CR2 | Best for Cold Weather | ~$7-$12 | 4.5/5 |
| Sony CR2 Lithium | Best Compact | ~$6-$11 | 4.6/5 |
The Best CR2 Batteries in 2026
The CR2 battery does not get the same attention as the AA or AAA, but for photographers, security installers, and laser tool users, it is a critical power source. These cylindrical 3V lithium cells punch above their weight, delivering high energy density in a compact package that handles cold weather better than alkaline alternatives.
Here are the five best CR2 batteries for 2026, selected for capacity, reliability, and real-world performance.
Top 5 Picks
1. Panasonic CR2 Lithium Battery Panasonic is the gold standard for CR2 cells. Their lithium formulation maintains voltage output even in sub-zero temperatures, making them the preferred choice for outdoor security systems and cold-weather photography. Consistent quality control across production batches earns this the top spot.
2. Energizer CR2 Lithium Battery Energizer’s CR2 is built for high-drain devices that cycle power frequently, like motion-activated cameras and laser levels. It holds a stable 3V output and performs reliably across a wide temperature range. Widely available and often sold in two-packs for good value.
3. Duracell Ultra CR2 Lithium Battery Duracell’s Ultra line brings their Duralock freshness technology to the CR2 format. The result is a battery that can sit on the shelf for a decade and still deliver full power when you need it. Excellent choice for infrequently used devices like emergency flashlights or backup cameras.
4. Streamlight CR2 Lithium Battery Streamlight. better known for their tactical flashlights. produces CR2 cells optimized for high-drain applications. If you run a compact lithium flashlight or a device that draws heavy current in short bursts, Streamlight’s CR2 delivers without the voltage drop you might see from generic brands.
5. Tenergy CR2 Lithium Battery Tenergy offers a budget-friendly CR2 that outperforms its price point. Capacity ratings are honest and performance in low-drain devices like sensors and detectors is reliable. A smart choice for bulk purchases when you are stocking a security system with multiple CR2-powered sensors.
What to Look For
High-drain vs. low-drain compatibility: Not all CR2 cells handle high-drain devices equally. Cameras and laser levels draw current in sharp spikes. look for batteries rated for high-pulse discharge. Sensors and detectors are low-drain and almost any quality brand will do.
Temperature performance: Lithium chemistry is inherently better in cold than alkaline, but there is still variation between brands. If your application involves outdoor use in winter, prioritize brands that explicitly rate their cells for -20°C or lower.
Shelf life rating: CR2 batteries are often bought infrequently. A 10-year shelf life means a spare sitting in a drawer will still work when you need it. Check the expiration date and prioritize brands with long-dated stock.
Certifications and authenticity: CR2 cells are commonly counterfeited. Purchase from reputable retailers and look for UL or IEC certifications on the packaging. Fake cells often fail to meet rated capacity and can leak, damaging expensive devices.
Pack size economics: CR2 batteries are pricier than common sizes. Buying in two-packs or four-packs from name brands is almost always better value than singles. If you have multiple devices, stock up.
Final Thoughts
The Panasonic CR2 earns the top recommendation for most users. its temperature performance and consistent quality make it the safest all-round choice. For budget-conscious buyers stocking security systems, the Tenergy CR2 provides honest performance at a lower price per cell.
Whatever you choose, buy from a reputable source to avoid counterfeits, and keep a spare on hand. CR2 batteries are not always easy to find in local stores, so online multipacks are the most practical way to ensure you are never caught short.
Frequently asked questions
What devices use CR2 batteries?+
CR2 batteries are used in 35mm film cameras, digital cameras, laser levels, motion detectors, glucose meters, and some flashlights. They are a 3V lithium cell in a cylindrical format, slightly smaller than a AA battery. Their high energy density makes them a popular choice for compact devices that need a lot of power in a small space.
Is a CR2 the same as a CR123?+
No. A CR2 and CR123A are both 3V lithium cells but different sizes. The CR123A is longer and holds more capacity, while the CR2 is shorter and narrower. They are not interchangeable. Check your device manual or the battery compartment markings to confirm which size your device requires before purchasing a replacement.
How long does a CR2 battery last in a camera?+
In a film camera, a CR2 battery can power hundreds of shots depending on flash usage. In a motion detector or smoke sensor, the same battery may last 1 to 3 years. Lithium chemistry handles cold temperatures exceptionally well, making CR2 cells reliable in outdoor security cameras and winter photography gear where alkaline batteries would fail quickly.