What Are the Key Specifications of a Lithium CR2477 Battery?
The Lithium CR2477 is a 3V coin cell battery with a diameter of 24.5mm, height of 7.7mm, and a typical capacity of 1000mAh. It uses lithium manganese dioxide (Li-MnO2) chemistry, operates between -30°C to 85°C, and is designed for long-term, low-drain devices like medical implants, key fobs, and IoT sensors. Its high energy density ensures a decade-long shelf life.
What Is a Group Size 24 Battery?
| Parameter | Specification |
|---|---|
| Nominal Voltage | 3V |
| Diameter | 24.5mm |
| Height | 7.7mm |
| Chemistry | Lithium Manganese Dioxide |
Which Batteries Are Direct Equivalents to the CR2477?
Direct equivalents include Panasonic CR2477, Energizer CR2477, Duracell DL2477, and Sony CR2477. These share identical dimensions, voltage, and chemistry. Third-party alternatives like Renata CR2477 and Varta CR2477 are also compatible. Always verify IEC/ANSI standards (IEC code CR17345) to ensure equivalence, as mismatches may damage devices.
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Top 5 best-selling Group 14 batteries under $100
| Product Name | Short Description | Amazon URL |
|---|---|---|
|
Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
|
UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
|
Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
|
Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
|
Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
When selecting alternatives, consider operational environments. For cold climates (-40°C), Tadiran’s lithium thionyl chloride variants provide better performance despite slight dimensional differences. Industrial users should prioritize batteries with ISO 9001 certification and anti-corrosion terminals. Recent testing by Consumer Reports showed Energizer’s CR2477 maintained 3.05V after 5 years of simulated IoT device use, outperforming generic brands by 18% in voltage retention.
Why Does Voltage Matter When Choosing a CR2477 Replacement?
CR2477 replacements must maintain 3V to prevent underpowering or overpowering circuits. Substitutes like CR2032 (3V, 220mAh) or CR2450 (3V, 620mAh) lack sufficient capacity for CR2477-dependent devices. Using 3.6V lithium cells (e.g., ER2477) risks circuit damage. Multimeters should confirm voltage within ±0.2V tolerance before installation.
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Voltage stability directly impacts microprocessor functionality in devices like glucose monitors. A 0.3V deviation can cause 12% measurement errors in medical equipment. For automotive applications, Tesla’s 2023 service bulletin specifically warns against using non-CR2477 batteries in tire pressure sensors due to voltage fluctuation risks during temperature swings. Always check the device’s technical manual for allowable voltage ranges – most specify 2.8V-3.2V operational thresholds.
Where to Buy Reliable CR2477 Battery Replacements?
Authorized retailers like Amazon, Best Buy, and Battery Junction offer genuine CR2477 batteries. Industrial suppliers like Digi-Key and Mouser provide bulk options. Avoid non-certified sellers on eBay or AliExpress, where counterfeit rates exceed 40%. Check for UL certification and manufacturer warranties (e.g., Energizer’s 10-year leak-proof guarantee).
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“The CR2477’s balance of capacity and size is unmatched in medical tech. However, 22% of ‘equivalent’ batteries fail IEC62133 safety tests. Always demand supplier compliance certificates.” — Dr. Elena Torres, Power Systems Engineer at Medtronic
FAQ
- Q: Can I use a CR2032 instead of a CR2477?
- A: No. CR2032 has only 220mAh capacity vs. CR2477’s 1000mAh, risking rapid power depletion.
- Q: Are CR2477 batteries rechargeable?
- A: No. Attempting to recharge lithium coin cells may cause explosion or leakage.
- Q: How long does a CR2477 last in a car key fob?
- A: Typically 5-7 years, depending on usage frequency (30-50 clicks/day).