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    CR1220 Battery Full Guide: Specs, Applications, Equivalents & Comparison with CR1255 & CR1216

    CR1220
    Part No.:
    CR1220
    Manufacturer:
    FDK America, Inc., a member of Fujitsu Group
    Category:
    Terminal Strips and Turret Boards
    Package:
    Datasheet:
    SENICO ELECTRONICS INTL CO., LIMITEDCR1220.pdf
    Description:
    BATTERY LITHIUM 3V COIN 12.5MM
    Quantity:

    Unit Price:$0

    Ext Price:$0

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    All the information you need to know about CR1220 batteries: equivalents, specifications, alternatives & more

    CR1220 Battery

    What is a CR1220 Battery?

    The CR1220 battery is a compact, non-rechargeable 3V lithium coin cell, commonly used in small electronics like G-Shock watches, car remotes, calculators, medical devices, and fitness trackers.

    The CR1220 lithium manganese dioxide battery is classified according to IEC (International Electrotechnical Commission) naming conventions. In this system:

    "C" designates the chemical system, specifically lithium as the negative electrode and manganese dioxide (MnO₂) as the positive electrode.
    "R" indicates the battery's round (cylindrical coin) shape. If the battery were rectangular, it would be labeled with an "F".
    The digits "1220" provide the physical dimensions: the first two digits (12) represent a diameter of 12.5 mm, and the last two digits (20) represent a height of 2.0 mm.
    The CR1220 has a nominal voltage of 3.0V and a typical end-point voltage of 2.0V. Its rated capacity is approximately 40 mAh, though actual capacity may vary slightly depending on the manufacturer and discharge conditions.
    Thanks to its compact form factor, stable discharge curve, and long shelf life (up to 10 years), the CR1220 is widely used in low-drain electronic devices where reliability and size efficiency are critical.



    CR1220 Battery

    CR1220 Battery Features

    Feature Specification
    Voltage 3V
    Chemistry Lithium (Li-MnO₂)
    Type Coin / Button Cell
    Diameter × Height 12.5 mm × 2.0 mm
    Capacity ~35–40 mAh
    Max Continuous Current ~0.1 mA
    Weight Approx. 0.8 grams
    Operating Temp Range -30°C to +60°C
    Shelf Life Up to 10 years
    Rechargeable No
    Mercury-Free Yes

    Major Manufacturers

    Brand Model Code Notes
    Panasonic CR1220 High quality, long-lasting
    Maxell CR1220, LM1220 Widely used, reliable capacity
    Energizer ECR1220 Popular in North America
    Duracell DL1220 Trusted consumer battery brand
    Sony CR1220 Common in remotes and wearables
    Renata CR1220 Swiss-made, used in watches

    CR1220 Equivalents and Cross-References

    The following models are equivalent to the CR1220 and can be used interchangeably:

    • DL1220 – Duracell
    • ECR1220 – Energizer
    • BR1220 – Panasonic (alternative chemistry)
    • LM1220 – Maxell
    • KCR1220 – Kodak/OEM models

    All these batteries share the same dimensions (12.5×2.0 mm) and output (3V).

    What Does a CR1220 Battery Fit?

    The CR1220 lithium battery features a unique, slim design and a high real capacity, and is a popular choice for small electronic devices, as well as other low-drain equipment. Here are a few of the most frequent uses:
    Watches:There are watches that are slim or small in size, both digital and analog, that operate with a quartz movement which makes them keep time accurately and use the CR1220 battery with virtually zero drain.
    Keyless Entry Devices: Automobile key fobs, garaged door openers, and other miniature remote control systems use CR1220 batteries for their long shelf life and compact form factor.
    Health & Medical Devices: CR1220 batteries are commonly used in portable medical equipment such as blood glucose meters, heart rate monitors, and digital thermometers, where dependable and long-lasting power is essential.

    Toys and Electronic Games: Small battery-powered toys, light-up accessories, and handheld games frequently use CR1220 coin cells, taking advantage of their lightweight design and reliable energy output.

    Calculators: Basic and scientific calculators that require a long-lasting power source often use CR1220 batteries for their low power consumption and extended shelf life.

    Cameras and Backup Memory: Some compact digital cameras and film cameras use CR1220 batteries to power internal clocks, light meters, or memory backup circuits, particularly where space and weight are limited.

    CR1216 vs CR1220 vs CR1255 Detailed Comparison Table

    Feature CR1216 CR1220 CR1255
    Voltage 3V 3V 3V
    Diameter 12.5 mm 12.5 mm 12.5 mm
    Thickness 1.6 mm 2.0 mm 5.5 mm
    Capacity ~25–30 mAh ~35–40 mAh ~80–100 mAh
    Max Current Output ~0.08 mA ~0.1 mA ~0.3–0.5 mA
    Typical Drain Current <0.05 mA (low-drain only) 0.05–0.1 mA (standard use) 0.1–0.5 mA (medium-to-high)
    Compatibility May fit, but too thin Standard size for slot Too thick for CR1220 holders
    Use Case Ultra-slim wearables, cards Watches, remotes, gadgets Sensors, IoT, long-life backup

    Notes:

    The CR1216, while close in size, is not thick enough to potentially cause poor contact and is only suitable for a few battery compartments with flexible contacts.
    The CR1255 offers significantly higher capacity and current output, but is physically thicker and is not compatible with the CR1220 battery compartment.

    The Typical Drain Current row indicates the normal discharge current of a battery in a typical application, and can help match the user to real-world power scenarios (e.g., the CR1255 is more suitable for medium to high power sensor devices).

    Frequently Asked Questions (FAQ)

    Q1: Can the CR1216 be replaced by the CR1220?
    Not recommended. CR1216 is thinner 1.6 mm vs 2.0 mm and is not likely to make good contact or maintain sufficient runtime.
    Q2: Is CR1255 a good substitute for CR1220?
    No. CR1255 also has a larger capacity, but at a much thicker size it will not fit in most stuff designed for CR1220.)
    Q3: What does DL1220 mean?
    DL1220 is Duracell's 'brand' for their CR1220. It is the same voltage and size.
    Q4: What is the best brand for cr1220?
    Panasonic, Maxell, and Energizer are popular choices because of quality and availability.
    Q5: whether this cr12200 battery, if i can recharge?
    No. It's a primary lithium cell and cannot be recharged. Charging may cause leakage or explosion.
    Product attributes
    Attribute value
    Manufacturer:
    FDK America, Inc., a member of Fujitsu Group
    Series:
    CR1220
    Package/Case:
    Packaging:
    Bulk
    Product Status:
    Active
    Resistance:
    Lithium Manganese Dioxide
    Tolerance:
    Coin, 12.5mm
    Power (Watts):
    3 V
    Composition:
    36mAh
    Features:
    0.49" Dia x 0.08" H (12.5mm x 2.0mm)
    Temperature Coefficient:
    Requires Holder
    Operating Temperature:
    -
    Supplier Device Package:
    Ratings:
    Size / Dimension:
    Height - Seated (Max):
    Number of Terminations:
    Failure Rate:
    Category:
    Terminal Strips and Turret Boards
    Datasheet:
    CR1220.pdf

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