The CR1220 battery, a type of lithium manganese dioxide cell, is named following the IEC standards. The 'C-' in its name suggests that it's a chemical battery with lithium metal as the anode and manganese dioxide as the cathode. The 'R-' part tells us that the battery is cylindrical; if it were square, it would be labeled with an 'F' instead. The numbers '12' and '20' refer to the battery's dimensions, with a diameter of 12.5mm and a height of 2.0mm.

This particular battery has a standard voltage of 3.0V, drops to an end voltage of 2.0V, and is rated at a capacity of 40mAh, although this can differ slightly depending on the manufacturer.

Widely used in CMOS batteries for digital devices and compact electronics, the CR1220 is found in memory backup functions, power-off protection systems, electronic dictionaries, LED lights, noise-making toys, and a host of other products.

battery cr1225

CR1220 Specifications

CR1220 Battery Equivalent

• Chemical System: Lithium/Manganese Dioxide (Li/MnO2)
• Negative Electrode: Lithium metal
• Positive Electrode: Manganese Dioxide

Dimensions:

• Diameter: 12.5mm
• Height: 2.0mm

Nominal Voltage: 3.0V
Endpoint Voltage: 2.0V
Rated Capacity: 40mAh

Note: The rated capacity can vary slightly depending on the manufacturer.

CR1220 Battery Equivalent

The CR1220 is a coin cell battery with a diameter of 12mm and a thickness of 2.0mm. It's a lithium manganese dioxide button cell, typically used in things like watches, calculators, and other small gadgets.

If you're looking for an equivalent, just keep in mind that any battery with the same specs will work. The "CR" at the start means it's a lithium battery, and the "1220" part refers to its size (12mm diameter, 2.0mm thickness).

Some popular equivalents for the CR1220 include:

• DL1220:
  This is a lithium battery with the same size and specs as the CR1220. It’s also 12mm in diameter and 2.0mm thick, commonly used in small devices like watches and calculators. The DL1220 is essentially the same as the CR1220.
• Energizer ECR1220:

Energizer is a well-known battery brand, and the ECR1220 is their version of the CR1220. This is a lithium battery that works in a wide range of small electronic devices.

• BR1220:

BR1220 is another model number equivalent to CR1220. It's a lithium battery with the same diameter and thickness, usually used in devices that are compatible with CR1220.

• LM1220:

The LM1220 is yet another equivalent to the CR1220. It’s a lithium battery and works in many of the same small electronic devices. When picking a battery, make sure to consider the brand and supplier reputation.

• KCR1220:

KCR1220 is another equivalent to the CR1220. Like the others, it's a lithium battery that fits in CR1220-compatible devices.

• SB-T13:

SB-T13 is one more name for the CR1220 battery. It's an alternative label used by different manufacturers to describe the same type of coin cell battery. All of these—CR1220, DL1220, BR1220, ECR1220, and SB-T13—are just different names for essentially the same 3V lithium coin cell with a diameter of 12mm and a thickness of 2.0mm.

When replacing a battery, make sure to use one with the same voltage and similar dimensions to ensure your device works properly.

Discharge Current and Discharge Life

CR1220 Batteries Cross Reference Chart

CR1220 Applications

Keyless Entry Devices
The CR1220 is commonly found in keyless entry systems, like those used in cars or other access control systems. It’s a small, reliable power source for the electronics that handle keyless entry functions.

Glucose Monitors
In glucose monitors or blood glucose testing devices, the CR1220 powers things like the display and memory. It helps keep the device running and ensures it stores data, even when not in use.

Implantable Cardiac Defibrillators
Although implantable medical devices typically need specialized batteries, the CR1220 might be used in certain telemetry or monitoring systems that work alongside cardiac defibrillators.

Heart-Rate Monitors
CR1220 batteries are perfect for powering heart-rate monitors. They provide a steady, long-lasting power source for continuous heart activity tracking.

Artificial Cardiac Pacemakers
Like with defibrillators, artificial pacemakers usually use specially designed batteries for medical use. The CR1220 wouldn’t be the main battery for the pacemaker itself, but it might be used in auxiliary or monitoring systems linked to the pacemaker.

Toys & Games
The CR1220 is great for small electronic toys and games. It’s compact and provides just enough power for things like lights, sounds, or memory storage in toys and games where space is tight but a steady power supply is still needed.

CR1220 Manufacturer

Panasonic is a well-known maker of all sorts of electronics, including batteries. But it’s important to remember that CR1220 is just a standard for coin cell batteries, so it’s not exclusive to Panasonic. Plenty of other reliable battery brands also make CR1220 batteries that meet this standard.

If you're specifically looking for a CR1220 from Panasonic, check for labels like ECR1220 or BR1220. These are just different versions of the CR1220 made by Panasonic.

CR1216 vs CR1220 vs CR1225

Additional Notes:

Some battery compartments made for CR1220 might also fit CR1216 or CR1225, but be careful to avoid damaging the device.

The small height difference between CR1220 and CR1225 (just 0.5mm) can make a big difference in devices with tight tolerances. It could cause malfunctions or even damage the device.

The height difference between CR1220 and CR1216 (0.4mm) might cause contact problems, leading to unreliable operation in certain devices.

Can I replace ML1220 with CR1220?

The ML1220 and CR1220 batteries aren’t interchangeable because they have different properties. The main difference is in their chemical makeup and how they work.

ML1220: This is a rechargeable lithium-ion coin cell. It’s designed to be recharged and is used in applications where you need a rechargeable battery.

CR1220: This is a non-rechargeable lithium manganese dioxide coin cell. It’s meant for one-time use only, and trying to recharge it could be dangerous. It can leak, overheat, or even explode.

Is CR1220 rechargeable?

No, CR1220 batteries are usually non-rechargeable. The "CR" part of the name means it’s a lithium manganese dioxide coin cell, and it's not meant to be recharged. If you're looking for a rechargeable coin cell, look for ones with labels like "ML" (for rechargeable lithium manganese) or "LIR" (for lithium-ion rechargeable).

Can CR1220 replace CR1225?

Even though CR1220 and CR1225 look pretty similar and are both 3-volt coin cells, they aren’t the same size.

CR1220: 12mm in diameter, 2.0mm thick.

CR1225: 12mm in diameter, 2.5mm thick.

There might be situations where a CR1220 could fit in a slot meant for a CR1225, but it's not a great idea to use the wrong size. The thickness difference could mess with the contacts, causing poor performance or even damage to the device.

What is CR1220 used for?

The CR1220 lithium coin cell battery is used in a bunch of different electronic devices because it’s small and provides 3V.

Watches: Many watches, especially smaller or slimmer designs, use CR1220 batteries to power their quartz movements.

Keyless Entry Devices: Car key fobs, remote controls, and other devices that need a compact power source often use CR1220 batteries.

Health and Medical Devices: Things like glucose monitors, heart-rate monitors, and other portable medical devices may use CR1220 batteries.

Toys and Games: Many small electronic toys and games use coin cell batteries, including the CR1220, to power them.

Calculators: Some small calculators use CR1220 batteries as their power source.

Cameras: Certain small cameras, especially those where size and weight matter, might use CR1220 batteries.

What is the life expectancy of a CR1220 battery?

The life of a CR1220 battery depends on how it's used, what device it’s powering, and the environment it’s in. Generally, it can last around a year, but it might last shorter or longer depending on the circumstances.

CR1220 batteries are found in a lot of devices like watches, calculators, key fobs, and more. How quickly they drain depends on how often the device is used and how much power it needs. Devices that use more power will drain the battery faster.

Also, temperature plays a big role. Extreme heat or cold can affect how well the battery works and impact its lifespan.

Frequently Asked Questions

Is CR1220 the same as ML1220?

Even though the CR1220 and ML1220 batteries are the same size and voltage (both are 3V coin cells with a diameter of 12mm and thickness of 2.0mm), they’re not the same. The main difference is that the CR1220 is non-rechargeable, while the ML1220 is rechargeable.

What size is CR1220?

It’s 12.5mm in diameter and 2.0mm thick.

Is a CR1220 battery the same as a CR1216?

Not exactly! The CR1216, CR1220, and CR1225 batteries are all different in size, which affects their capacity and performance.

CR1216: 12mm in diameter, 1.6mm thick.

CR1220: 12mm in diameter, 2.0mm thick.

The main difference is the thickness. The CR1220 is thicker, which gives it a higher capacity. As you mentioned, the CR1216 has the smallest capacity (25 mAh) of the three.

Is CR1220 the same as CR2032?

No, CR1220 and CR2032 aren’t the same size. They look similar but have different dimensions.

CR1220: 12mm in diameter, 2.0mm thick.

CR2032: 20mm in diameter, 3.2mm thick.