CR1220 / Casio Watch Coin Battery


Coin Battery type: CR1220 (Lithium / Manganese Dioxide (Li/MnO2));

Battery price: 7$ [average Amazon price. We may earn a commission on qualifying purchases from our links to Amazon]

Classification: “Lithium Coin”
Chemical System: Lithium / Manganese Dioxide (Li/MnO2)
Designation: ANSI-5012LC, IEC-CR1220
Nominal Voltage: 3.0 Volts
Typical Capacity: 40 mAh (to 2.0 volts)
(Rated at 45K ohms at 21°C)
Typical Weight: 0.78 grams (0.03 oz.)
Typical Volume: 0.25 cubic centimeters (0.02 cubic inch)
Max Rev Charge: 1 microampere
Energy Density: 153 milliwatt hr/g, 464 milliwatt hr/cc
Typical Li Content: 0.006 grams (0.0002 oz.)
UL Recognized: MH29980
Operating Temp: -30C to 70C
Self Discharge: ~1% / year


Is compatiable with: Casio Watches (including G-Shock, ProTrek, Edifice, Baby-G, Beside, MTP, OutGear and others models). You just need to know its name (such as CR1220 on the battery itself)

WARNING ABOUT CR1220 / Casio Watch Coin Battery:

  • Forbid short-circuit, charge between”+” and”-“.
  • Forbid over-discharge, fire, damage.
  • Finish sealing less more 5 seconds at 200 C~250 C;
  • Take out the battery when discharging to
    cut-off voltage, and embedding it under the
    ground or jump in the deep water.

Will be useful: Watch Repair Kits

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