Padmavathi Marketing

Type: Coin (button) cell, lithium manganese-dioxide chemistry (LiMnO₂) in the “CR” series by Panasonic. 

Nominal Voltage: 3.0 V. 

Non-rechargeable

Nominal Capacity: ~ 35 mAh under standard conditions. Dimensions: Diameter ≈ 12.5 mm, Height ≈ 2.0 mm.

Approximate Weight: ~ 0.9 g. 

Operating Temperature Range: about –30 °C to +85 °C

Because it delivers ~3 V and moderate capacity in a very compact form, it’s ideal in space-constrained devices.

Common applications: watches, small calculators, memory backup (real-time clock modules), key fobs, small sensors, remote controls. 

Panasonic notes that this CR1220 coin cell has “stable voltage level during discharge” and “long-term reliability” among its features.

Very low self-discharge compared to many other battery chemistries, making it suitable for devices where the battery must last a long time or sit unused.

Type: Primary (non-rechargeable) lithium coin-cell battery (Li/MnO₂ chemistry). 

Nominal Voltage: 3.0 V.

Size: Approximately 16.0 mm diameter × 2.0 mm height.

Nominal Capacity: ≈ 75 mAh under standard conditions. 

Continuous Standard Drain: 0.1 mA. Weight: Approx. 1.3 g. 

Operating Temperature Range: −30 °C to +85 °C. 

Because of its small size and stable voltage, it’s well-suited for space-constrained devices (thin coin battery slots).

Typical applications include: remote keyless entry fobs, smart transmitter tags, card remotes, memory backup modules. 

Good low temperature performance and long shelf life compared to many other battery types.