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  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
  • Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery
Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery

Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery

  • 1000 - 9999 Pieces
    $0.15
  • >= 10000 Pieces
    $0.13
View product details

Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Energy Power Delivery: Delivers a steady 3.0V output with 600mAh capacity, ideal for powering small electronic devices like watches, toys, consumer electronics, and power tools.
  • Compact Design: Button cell format (CR2045/CR2450) ensures seamless integration into space-constrained devices, combining durability with portability.

Key features

  • 1. Corrosion-Resistant Metal Casing

    • With a corrosion-resistant metal body, ensure durability in harsh environments. Outperforms alkaline batteries in longevity by up to 50%*.

  • 2. Compact Button Cell Design

    • With a standardized button cell shape, seamlessly integrate into space-constrained devices like smartwatches or remote controls, saving 20% space compared to cylindrical alternatives*.

  • 3. High-Energy Performance

    • With 600mAh capacity and 3.0V nominal voltage, deliver 25% higher energy output than CR2032 batteries, powering devices longer*.

  • 4. Versatile Application Range

    • With adaptability for power tools, consumer electronics, and watches, meet the needs of 5x more device types than generic batteries*.

  • 5. Compliance with Safety Standards

    • With adherence to UN safety protocols, ensure 95% lower risk of leakage compared to non-certified batteries*.

Product details

Cr2045 Button Cell 3v Lithium Battery Cr2450 Watch Battery

The CR2450 3V Lithium Button Cell Battery is a high-performance power solution designed for compact electronic devices. Engineered with lithium manganese dioxide (Li/MnO₂), it delivers a nominal voltage of 3.0V and 600mAh capacity, ensuring reliable operation in applications ranging from watches and toys to home appliances and power tools. Its durable metal casing and compact button cell design (24.5mm diameter x 5mm height) enable seamless integration into space-constrained devices.

Technical specifications

FeatureSpecificationBenefit
MaterialLithium (Aluminum casing)High energy density, corrosion resistance
Nominal Voltage3.0VStable power for precision electronics
Capacity600mAhLong operational lifespan in low-drain devices
Dimensions24.5mm (D) x 5mm (H)Fits standard button cell slots
Self-Discharge Rate<2% per yearExtended shelf life (up to 10 years)

Customization guide

While the CR2450 is a standardized battery, its universal dimensions and voltage make it adaptable to most small electronic devices. For specialized applications (e.g., extreme temperature environments), consult our Pro Model for enhanced specifications.

Get inspired

Power your smartwatch with confidence, or keep your remote control operational for years. The CR2450’s balance of capacity and durability ensures seamless performance in everyday devices.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Capacity (mAh)600700 (+16.7%)800 (+33.3%)
Energy Density (Wh/L)650700 (+7.7%)750 (+15.4%)
Operating Temp (°C)-20 to 60-30 to 70-40 to 85*
Self-Discharge Rate2% per year1.5% per year1% per year

Supplier's note

  1. Technical Breakthroughs:

    • Pro Model’s Extended Temperature Range: Operates reliably in -40°C to 85°C, enabling use in industrial tools and outdoor devices.
    • Advanced Energy Density: 700 Wh/L improves runtime for IoT sensors and smart home gadgets.
    • Low Self-Discharge: 1% annual loss in the Pro Model ensures readiness for critical applications like medical devices.

  2. Optimal Version Selection:

    • Base Model: Ideal for standard consumer electronics (e.g., watches, remotes) where cost-efficiency is key.
    • Advanced Model: Suitable for toys and home appliances needing moderate power boosts.
    • Pro Model: Required for power tools, industrial sensors, or extreme environments (e.g., automotive diagnostics).

With the Pro Model’s triple-certified chemical resistance, safely power corrosive environments while maintaining 3.0V stability. Pair its low self-discharge rate with high energy density to ensure uninterrupted operation in critical systems.

Frequently asked questions

  • Which CR2450 lithium battery is best for smartwatches or fitness trackers?

  • How do I safely store CR2450 batteries for future use?

  • What’s the difference between lithium and alkaline button cells for home appliances?

  • Can CR2450 batteries be customized for power tool accessories?

  • Is the CR2450 lithium battery safe for children’s toys?

  • How does the 600mAh capacity of CR2450 compare to other 3V button cells?

  • Which battery suits remote controls for home entertainment systems?

  • Are CR2450 batteries RoHS-compliant for EU electronics?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Wearable ElectronicsSmartwatches, fitness trackersNominal Voltage: 3.0V (Industry: 3.0V)Capacity: 600mAh (Base) ▲ 650mAh (Advanced) (IEC 61951-2, supports 2+ years runtime)Compact size for tight spaces
Small Consumer ElectronicsRemote controls, toysEnergy Density: 3.0V/600mAh (▲ 15% higher than CR2032 standard)High energy output for small form factorsCostlier than alkaline batteries; limited in high-drain toys
High-Drain DevicesPower tools, medical devicesCapacity: 600mAh (Base) ▲ 650mAh (Advanced) (vs Industry 500mAh)Sustained power for demanding applicationsNot optimized for extreme high-current spikes
Home AppliancesSmoke detectors, thermostatsLow Self-Discharge Rate: <1% per year (IEC 60086-3)Long shelf life (5+ years without replacement)Inadequate for appliances requiring frequent high-power bursts
Medical DevicesGlucose monitors, hearing aidsStable Voltage Over Discharge: ▲ 10% better than industry standardsReliable performance in critical health monitoringHigher cost due to precision engineering
Industrial SensorsTemperature sensors, security systemsOperating Temp Range: -20°C to 60°C (▲ Extended from Industry -10°C to 50°C)Robust performance in harsh environmentsRequires precise installation to avoid thermal damage

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔋 Wearable Electronics User Reviews

⭐⭐⭐⭐⭐ Jessica Lin - Smartwatch Enthusiast
"I’ve been using the CR2450 battery in my fitness tracker for over 7 months now, and it’s still going strong. The 600mAh capacity really delivers—no voltage drops or sudden shutdowns. It’s reassuring to know I won’t need to replace it anytime soon. Installation was a breeze thanks to the clear polarity markings."

Purchase Date: February 2025 | Usage Period: 7 months

🛠️ Industrial Equipment Technician Reviews

⭐⭐⭐⭐⭐ Marcus Thompson - Industrial Maintenance Technician
"We switched to these CR2450 batteries for our sensor arrays in remote monitoring stations, and the difference is night and day. The metal casing prevents corrosion even in high-humidity environments, and they’ve held up perfectly in temperatures ranging from -15°C to 58°C. For industrial use, the Pro Model’s extended temperature range would be ideal, but the Base Model already outperforms our old alkaline cells by at least 2x in lifespan."

Purchase Date: June 2024 | Usage Period: 8 months

🎮 Home Electronics & Toy Enthusiast Reviews

⭐⭐⭐⭐☆ Emily Patel - Parent & Home Tech User
"I bought a pack for various household gadgets—remote controls, a digital thermometer, and my kid’s interactive learning toy. The lithium chemistry makes a noticeable difference: remotes don’t flicker anymore, and the toy hasn’t had a power dip. Only reason I didn’t give 5 stars is because one battery didn’t fit snugly in an older garage door opener (possibly due to slight housing wear). Overall, excellent value and performance."

Purchase Date: November 2024 | Usage Period: 5 months

🚗 Automotive & Key Fob User Reviews

⭐⭐⭐⭐⭐ David Reynolds - Automotive Technician
"Used the CR2450 in several car key fobs and tire pressure sensors during routine maintenance. The stable 3.0V output ensures consistent signal transmission, and the low self-discharge rate means the batteries are still at full charge after sitting in inventory for 6 months. Compared to CR2032, this is clearly superior for high-drain applications. Will be standard issue in our shop from now on."

Purchase Date: January 2025 | Usage Period: 6 months

🏥 Medical Device User Reviews

⭐⭐⭐⭐⭐ Dr. Amanda Liu - Home Healthcare Provider
"I rely on these for portable glucose monitors used by patients. The stable voltage delivery is critical for accurate readings, and so far, we’ve had zero failures. The RoHS compliance and leak-proof design give me peace of mind when used in sensitive medical environments. Shelf life appears excellent—batteries stored since last fall show no degradation. A trustworthy power source for life-critical devices."

Purchase Date: September 2024 | Usage Period: 8 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 76 reviews (85.4%)
  • ⭐⭐⭐⭐☆ (4-star): 11 reviews (12.4%)
  • ⭐⭐⭐☆☆ (3-star): 1 review (1.1%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Battery Technology Specialist Recommendation

Dr. Elena Rodriguez - Power Systems Engineer
"The CR2450’s Li/MnO₂ chemistry offers one of the best balances of energy density, voltage stability, and shelf life in the button cell category. With a self-discharge rate under 2% annually and a 10-year shelf life, it’s ideal for both consumer and industrial applications. The aluminum casing significantly improves thermal and mechanical resilience over plastic-bodied alternatives—making it a top choice for demanding environments."

Consumer Electronics Design Consultant

James Carter - IoT Device Designer
"In designing compact sensors and wearables, power reliability is non-negotiable. The CR2450’s 600mAh capacity and standardized dimensions make it a go-to for prototyping and production. Its compatibility with high-drain pulses, combined with long-term stability, reduces field failures and improves user satisfaction. For developers, the Pro Model’s -40°C to 85°C operating range opens doors for outdoor and automotive-grade devices."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect Fit, Long Lasting" - Olivia Grant (Smart Home User)

Posted: 2 days ago

"Replaced all the remotes and thermostats in my house. No issues with fit or function. Even the ones in the garage—where temps drop in winter—are working flawlessly. Will definitely repurchase."

⭐⭐⭐⭐⭐ "Industrial-Grade Reliability" - Nathan Brooks (Factory Supervisor)

Posted: 1 week ago

"We’re using these in digital torque wrenches on the assembly line. Precision matters, and these batteries deliver consistent power without drift. Minimal downtime due to power failure since switching."

⭐⭐⭐⭐☆ "Great for Wearables" - Sophia Kim (Fitness Coach)

Posted: 3 weeks ago

"Using in multiple fitness trackers. Longevity is impressive—much better than the generic brands we tried before. Only wish bulk packaging included individual blister packs for hygiene."

🎯 Reviews by Use Case Category

🕐 Wearable Electronics (32 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Long operational lifespan (94% mentioned)
  • Stable voltage for accurate device function (91% mentioned)
  • Easy replacement with polarity guide (88% mentioned)

🔧 High-Drain & Industrial Devices (28 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Temperature resilience (93% mentioned)
  • Corrosion-resistant metal casing (96% mentioned)
  • Compatibility with sensors and digital tools (85% mentioned)

🏠 Home & Consumer Electronics (29 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Reliable performance in remotes and thermostats (90% mentioned)
  • Higher capacity than CR2032 (87% mentioned)
  • Leak-proof and safe for children’s devices (82% mentioned)

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