5X Sony SR621SW 364 AG1 SILVER OXIDE Coin WATCH BATTERY 1.55V EXP 2030

🔋 Sony SR621SW (364) 1.55V Silver Oxide Button Battery – Genuine – Long Shelf Life – Fresh Stock

Power your precision devices and timepieces with the reliable, long-lasting Sony SR621SW (364) button cell battery. Ideal for analog watches, small electronics, and precision tools, this compact silver oxide battery delivers stable voltage and dependable performance.

✅ 100% Genuine Sony – No rewraps or off-brand substitutes

✅ Fresh Stock – Long expiry (2030 or later)

✅ Mercury-Free & Eco-Friendly

✅ Perfect for watches, calculators, and more

✅ Sony is a trusted brand known for long-lasting, leak-resistant batteries.

✅ Product Specifications

• Brand: Sony
• Model: SR621SW
• Common Name: 364
• Chemistry: Silver Oxide (Non-rechargeable)
• Voltage: 1.55V
• Capacity: Approx. 15–18 mAh
• Diameter: 6.8 mm
• Height (Thickness): 2.1 mm
• Shelf Life: 5–7 years (see below)
• Mercury-Free: Yes
• Packaging: Factory-sealed blister pack

🕒 What Does "Shelf Life" Mean?

Shelf life refers to how long a battery can be stored unused and unopened without significantly losing power.

For Sony SR621SW:

• 🗓 Shelf life: 5–7 years in sealed packaging
• 🧊 Store in a cool, dry environment
• 🔋 Retains over 90% charge when stored properly
• 💡 Once installed in a device, the battery begins to discharge

Perfect for spares, repair kits, or long-term storage!

🔧 Cross-Reference / Equivalent Battery Names

Sony SR621SW (364) is equivalent to the following battery models:

• 364, SR621SW, SR60, D364, V364, GP364
• SB-AG, 280-34, SR621, LR621 (alkaline, not recommended for watches)

🛑 Use silver oxide types (like SR621SW) for watches—they last longer and provide more stable voltage than alkaline equivalents.

⌚ Common Uses & Devices

• ✅ Analog & Digital Wristwatches (Low Drain)
• ✅ Compact Medical Devices (e.g. glucometers, thermometers)
• ✅ Small Calculators
• ✅ Fitness trackers & pedometers
• ✅ Remote controls & key fobs
• ✅ Toys, jewelry watches, and mini flashlights

⌚ Watch Brands That Use…