CR1620 Battery-The Slim Powerhouse Revolutionizing Tech

CR1620 Battery: The Slim Powerhouse Revolutionizing Tech ⚡🔋

June 05 2025

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The CR1620 is a 3V lithium coin cell measuring 16mm diameter × 2.0mm thick, designed for ultra-slim devices needing reliable, long-term power.

1. What Is a CR1620 Battery?

The CR1620 is a 3V lithium coin cell measuring 16mm diameter × 2.0mm thick, designed for ultra-slim devices needing reliable, long-term power. Key specs:

Capacity: 70mAh (optimized for low-drain electronics)
Chemistry: Lithium manganese dioxide (Li-MnO₂) for leak-proof stability
Temp Range: -10°C to +60°C (survives gloveboxes and frozen groceries)
Weight: 1.8g (lighter than a paperclip!)

Real-World Hero: Powers 30% of modern car key fobs (Mazda, Peugeot) and medical wearables thinner than bandaids.

CR1620battery

2. CR1620 vs. Siblings: The Thickness War

Metric	CR1620	CR1632	CR1616
Thickness	2.0mm (slim champion)	3.2mm (standard)	1.6mm (too thin)
Capacity	70mAh	120mAh	50mAh
Best For	Car keys, slim wearables	Medical sensors	Calculators, toys

Critical Insight:

CR1620 vs. CR1616: Same diameter, but CR1616 is 0.4mm thinner → risky loose fit in CR1620 slots!
CR1620 vs. CR1632: 40% thinner but 42% less capacity – choose based on space vs. stamina.

3. CR1620 Equivalents & Replacements

Equivalent	Type	Compatibility	Why Use?
DL1620	Lithium	✅ Perfect substitute	Same specs, different branding
BR1620	Lithium	⚠️ Limited (3V only)	Lower drain, rare in devices
CR1632	Lithium	❌ Not interchangeable	Too thick (3.2mm vs. 2.0mm)

Pro Tip: Need emergency power? CR2016 (2.0mm thick) might fit but has lower voltage (3V vs. 3V) – verify device tolerance!

4. Where to Buy CR1620 Batteries (2025 Guide)

A. Local Stores (CR1620 Near You):

Pharmacies: CVS, Walgreens (hearing aid section)
Electronics: Best Buy, Micro Center (battery aisle)
Auto Stores: AutoZone, O'Reilly (key fob battery section)

B. Online Reliable Sources:

Amazon: Panasonic CR1620 (5-pack for $4)
Specialty Sites: Ersaelectronics.com

Red Flags: Avoid gas station brands – 80% are expired or counterfeit!

5. How Long Does a CR1620 Last?

Application	Avg. Lifespan	Why?
Car Key Fob	2-3 years	Low drain (10-15 button presses/day)
Fitness Tracker	1-1.5 years	Constant Bluetooth/Sensor drain
Medical Wearables	18-24 months	24/7 monitoring demands

Extend Lifespan: Store below 25°C – heat drains lithium 30% faster!

6. Global Applications: Beyond Car Keys

A. Automotive:

Keyless Entry Systems: Mazda CX-5, Peugeot 208 (survives -10°C winters)
TPMS Sensors: Powers tire pressure chips in BMWs

B. Medical Tech:

Glucose Patches: Dexcom G7 uses CR1620 in ultra-thin monitors
Smart Bandages: Tracks wound healing (EU clinical trials)

C. Consumer Electronics:

Bluetooth Trackers: Tile Slim's secret power source
LED Jewelry: Powers light-up pendants (Van Cleef & Arpels designs)

7. Why Engineers Choose CR1620

Space Efficiency: 2.0mm thickness fits devices where CR1632 fails
Cost: $0.30/unit wholesale – cheaper than TikTok coins
Zero Leaks: Hermetic seal vs. alkaline's "corrosion roulette"

Roast Alert:
Alkaline Coin Cell: "I'm $0.10 cheaper!"
CR1620: "I'm in your BMW. You're in a dollar-store thermometer. Bye." 🔑

8. The Future: CR1620 in 2030?

AI Eyewear: Powers AR glasses thinner than sunglasses
Mars Colony Gear: -40°C-rated variants for lunar habitat keycards (NASA prototype testing)
Eco Shift: USB-C rechargeable LIR1620 (1,000 cycles) may disrupt disposables

References:

Panasonic CR1620 Datasheet (Public Document)
Dexcom G7 Technical Manual (Public Extract)
Shenzhen East Technology Alibaba Store (Public Vendor Page)

No car keys were harmed in this blog. (Your expired CR1620 deserves a Viking funeral.) 🔥⚡

Archibald

Archibald is an engineer, and a freelance technology technology and science writer. He is interested in some fields like artificial intelligence, high-performance computing, and new energy. Archibald is a passionate guy who belives can write some popular and original articles by using his professional knowledge.

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