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Technical content
Rechargeable Lithium Batteries Features & Benefits
- Excellent charging and discharging cycle characteristics.
- Can keep higher voltage(2.3V) compared to MT series.
- Long term reliability that many solar watches prove. Part number CTL621F Charging Voltage 2.5V～2.7V Nominal Voltage 2.3V Nominal Capacity*1 3.6mAh Continuous drain 0.02mA Dimensions*2 Diameter（Max.） 6.8mm Height（Max.） 2.1mm Weight*2 Approx. 0.15g Operating Temperature Charge -20°C to +60°C Discharge -20°C to +60°C Specifications
Applications
- Watches
- IoT/sensing devices 2.1mm 6.8mm *1 Based on standard drain and cut-off voltage down to 2.0V at 20℃. *2 Without tabs. Dimensions Charging circuits Charging/discharging cycle Approx. 100times at 100% discharge depth to nominal capacity. Charging system Constant-voltage system Operating temperature -20°C to +60°C * Please ask Panasonic about constant- current charging system. The charging circuit is crucial in terms of ensuring that full justice will be done to the battery characteristics. Please study it carefully as the wrong charging circuit can cause trouble. Please visit our website : Panasonic corporation https://industrial.panasonic.com/ww/products/batteries/secondary-batteries/coin_rechargeable_lithium As of April, 2019. The contents of this product information are subject to change without notice.
- If a fixed-charging method is applied, please adhere to the specified charging voltage. Guaranteed voltage is 2.5V to 2.7V at the temperature of -20°C to 60°C. If the charging voltage exceeds the specifications, the internal resistance of the battery will rise and may cause battery deterioration. Also with a charge voltage around 4V, corrosion of the positive(+) terminal (case) may occur causing leakage. It is not possible for the battery to recover completely when the charging voltage is below the specification. 2. Under no circumstances trickle charging should be used. Ignoring this precaution will cause the battery voltage to rise to about 5V, resulting in a deterioration of performance. Please feel free to ask a Panasonic sales person. Handling Guidelines Battery Characteristics Discharging Characteristics Cycle Life Characteristics This data in this document is for descriptive purposes only and is not intended to make or imply any guarantee or warranty. 1.0 1.5 2.0 2.5 3.0 3.5 VOLTAGE / V CAPACITY / mAh -20℃ 20℃ 60℃ Charging Condition : CV(2.6V, 160Ω, 60H) Discharging Condition : CR(130kΩ, 2.0V Cut-off, 20°C) 100 120 0 100 200 300 400 500 CAPACITY RETENTION / % CYCLE NUMBER / Cycle Charging Condition : CV(2.6V, 160Ω, 24H) Discharging Condition : CR(10kΩ, 2.0V Cut-off, 20°C) 100 120 0 20 40 60 80 100 CAPACITY RETENTION / % TIME / day Charging Condition : CV(2.7V, 60°C) Discharging Condition : CR(130kΩ, 2.0V Cut-off, 20°C) ２．６V Continuous Charging Characteristics by High Temperature(60℃)