Single-use battery Panasonic SR-920

The Panasonic SR-920 is a single-use coin battery delivering a nominal voltage of 1.55 V and a capacity of 45 mAh. With compact dimensions around 9.5 mm in diameter and 2.05 mm in height, it is designed for small electronic devices where reliable, stable power is required. The battery’s metal casing and sealed construction provide a consistent output suitable for precision instruments such as watches and calculators.

Advantages

The SR-920 offers steady voltage output across its service life and compact size that fits many coin-cell compartments. Its single-use chemistry ensures low self-discharge when stored, and the battery’s construction supports reliable contact and long shelf life. Lightweight design makes it suitable for small portable devices where space and weight are constrained.

Suitable for

• Wristwatches and timepieces
• Calculators and small office electronics
• Medical monitoring devices with low power draw
• Key fobs, remote controls and small sensors

Key specifications

• Battery type: Single-use coin cell
• Nominal voltage: 1.55 V
• Nominal capacity: 45 mAh
• Diameter (approx.): 9.5 mm
• Height (approx.): 2.05 mm
• Weight: 0.0007 kg

How to use

Install the battery in the device with correct polarity, matching the positive (+) and negative (−) markings to the compartment. Ensure battery contacts and compartment are clean and dry before insertion. Do not force the battery into the holder; it should seat securely with minimal pressure. Replace the battery when the device indicates low power or when performance declines. Dispose of used batteries according to local regulations for single-use cells.

Usage recommendations

Store unused batteries in a cool, dry place away from direct sunlight and metallic objects to prevent short circuits. Do not recharge, puncture, or expose to high temperatures. Keep out of reach of children and arrange proper recycling or disposal for spent batteries.