Think small—really small. Now, imagine something with that size powering your car key fob or your digital thermometer. That’s the magic of the CR1620 battery—a tiny powerhouse that quietly fuels our daily devices.
What Is a CR1620 Battery?
The CR1620 is a non-rechargeable lithium coin cell battery, widely used in compact electronic gadgets. The name isn’t random:
- “CR” stands for lithium manganese dioxide chemistry.
- “16” refers to the diameter (16mm).
- “20” means it’s 2.0mm thick.
Simple name, serious energy.
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Key Specifications of CR1620
Here’s a quick peek at what makes the CR1620 tick:
- Voltage: 3 volts
- Capacity: ~70mAh
- Diameter: 16mm
- Height: 2.0mm
- Type: Lithium Coin Cell
- Shelf Life: Up to 10 years
- Operating Temp: -20°C to 60°C
Tiny? Yes. But it packs a reliable punch.
Common Applications of CR1620
You’ve probably used a CR1620 battery without even knowing it. These are the quiet little giants behind:
- Car key fobs
- Calculators
- Fitness trackers
- Medical devices (like glucose meters)
- Wristwatches
- Digital thermometers
- Garage door remotes
They’re like the unsung heroes of your pocket tech.
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CR1620 vs. Other Coin Cell Batteries
CR1620 vs CR1632
While both share the same diameter (16mm), the CR1632 is thicker (3.2mm), offering a larger capacity (~130mAh). It’s used where more juice is needed. CR1620, being slimmer, fits compact gadgets better.
CR1620 vs CR1616
Now compare it to the CR1616, which is thinner (1.6mm) and slightly lower in capacity (~55mAh). CR1620 outperforms it while maintaining similar dimensions. Think of CR1620 as the middle child: just the right balance.
How Long Does a CR1620 Battery Last?
It depends on usage. For devices like key fobs, a CR1620 can last up to 2–3 years. For more power-hungry gadgets, the lifespan may shorten.
Pro Tip: If your remote feels sluggish or stops responding, the CR1620 is waving goodbye.
How to Replace a CR1620 Battery Safely
Step-by-Step Replacement Guide
- Turn off the device.
- Open the battery compartment using a small screwdriver or coin.
- Remove the old battery—note its orientation.
- Insert the new CR1620, positive side up.
- Secure the compartment, and test your device.
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Precautions to Take While Handling
- Avoid touching both sides—finger oils can corrode terminals.
- Keep out of children’s reach. These can be a choking hazard.
- Do not short-circuit or try to recharge them!
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Where to Buy CR1620 Batteries
Top Online Retailers
- Amazon – Tons of brands and bulk options.
- eBay – Often good for bulk buys at lower prices.
- BatteryJunction – Specialty battery store with reviews.
In-Store Options
- Walmart
- Best Buy
- CVS or Walgreens
Most stores keep CR1620s near camera or hearing aid batteries.
How to Check If Your CR1620 Is Dead
Ask yourself:
- Is the device unresponsive?
- Did your key fob stop unlocking?
- Do digital displays appear dim?
To be sure, use a multimeter—if it shows under 2.8V, it’s time for a new one.
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Disposing and Recycling CR1620 Batteries
Never toss these in the trash. They contain lithium and can harm the environment.
Take them to:
- Electronics stores with recycle bins
- Local waste facilities
- Battery recycling programs
Planet Earth will thank you.
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Are CR1620 Batteries Rechargeable?
Short answer: Nope.
They’re single-use lithium cells. Trying to recharge one is not only ineffective but dangerous. For rechargeables, look into Li-ion or NiMH button cells.
Tips to Extend CR1620 Battery Life
- Turn off your device when not in use.
- Avoid extreme temperatures—heat drains batteries fast.
- Buy fresh—check manufacturing dates.
- Store extras in a cool, dry place to maintain shelf life.
It’s like preserving milk—except these can last up to a decade if stored right.
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Best Brands for CR1620 Batteries
Panasonic
Highly regarded for quality and longevity. A top choice for car remotes and high-precision electronics.
Energizer
A household name that delivers consistency. Great for medical devices and watches.
Duracell
Known for reliability. Often pricier, but offers excellent shelf life.
Conclusion
The CR1620 battery may be small, but it powers some of our most essential everyday devices. From key fobs to medical instruments, its role is irreplaceable. Choosing the right brand, handling it with care, and replacing it on time ensures your tech keeps ticking without a hiccup. So next time your remote or gadget starts acting up, don’t sweat—it’s probably just time for a new CR1620.