CTL920 / Casio Watch Coin Battery


Coin Battery type: CTL920 (Lithium Cobalt Oxide);

Battery price: 21$ [average Amazon price. We may earn a commission on qualifying purchases from our links to Amazon]

Nominal Capacity: 5.5mAh
Nominal Voltage: 2.3V
Standard Discharge Condition: 0.2mA
Standard Charge Condition
(Constant Voltage and Constant Current Method) Voltage: 2.6V
Current: 1.0mA
Time: 24h
Cathode Active Material: Lithium Cobalt Oxide
Anode Active Material: Lithium Titanium Oxide
Energy Density per Volume: 89Whl
Energy Density per Mass: 25Wh/kg
Cycle characteristics(100%DOD): More than 100 cycles.*
Operating temperature range -10~60 C
Weight(g): 0.5g


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 CTL920 on the battery itself)

WARNING ABOUT CTL920 / 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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1 year ago

Only Russian guys set USA dollar sign $ after the digit, like this, 21$:)