The Seiko SR626SW5SE is a silver oxide button cell battery commonly used in watches, calculators, and small electronics. With a voltage of 1.55V and a diameter of 6.8mm, it provides long-lasting power and reliability. This battery is equivalent to the SR626SW, 377, and 626A models, making it interchangeable with devices requiring these types.
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How Does the Seiko SR626SW5SE Compare to Other Batteries?
The SR626SW5SE offers higher capacity and stability compared to alkaline batteries. Unlike lithium coin cells, it maintains voltage consistency until depletion, ensuring device accuracy. It is interchangeable with Renata 377, Energizer 626, and Sony SR626SW, but outperforms cheaper alternatives in longevity, especially in high-drain devices like digital thermometers or LED lights.
Silver oxide chemistry enables the SR626SW5SE to deliver 20-30% more energy density than alkaline equivalents. This makes it ideal for precision instruments where voltage drops could compromise functionality. For example, a digital watch using this battery may maintain accuracy within ±2 seconds/month, while alkaline-powered models might drift by ±15 seconds. The table below highlights key differences:
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| Battery Type | Voltage | Lifespan (Watches) | Cost |
|---|---|---|---|
| SR626SW5SE | 1.55V | 2-3 Years | $$ |
| Alkaline 626 | 1.5V | 1-1.5 Years | $ |
What Devices Use the SR626SW5SE Battery?
This battery powers precision instruments such as analog/digital watches, medical devices (e.g., glucose monitors), calculators, laser pointers, and key fobs. Its compact size and stable output make it ideal for electronics requiring consistent energy over months or years. Always check device manuals to confirm compatibility before installation.
How to Replace the SR626SW5SE Battery Safely?
Use a non-conductive tool to open the battery compartment. Avoid touching both terminals to prevent static discharge. Insert the new battery with the (+) side facing up. Dispose of the old battery at a recycling center. For water-resistant devices, ensure the seal is intact after replacement to maintain protection.
Why Choose Silver Oxide Over Alkaline for SR626SW5SE?
Silver oxide batteries like the SR626SW5SE deliver a steady voltage curve, critical for timekeeping and medical devices. Alkaline cells experience voltage drops over time, leading to inaccuracies. Silver oxide also has a 10-year shelf life vs. alkaline’s 2-3 years, making it superior for infrequently used devices.
Can the SR626SW5SE Be Recharged?
No. The SR626SW5SE is a single-use, non-rechargeable battery. Attempting to recharge it may cause leakage, overheating, or rupture. For rechargeable alternatives, consider Li-ion button cells, but verify compatibility, as their voltage (3.7V) differs significantly and could damage devices designed for 1.55V.
What Are the Environmental Impacts of Disposing SR626SW5SE?
Silver oxide batteries contain small amounts of heavy metals. Improper disposal can lead to soil/water contamination. Always recycle them through certified programs like Call2Recycle. Many retailers offer free drop-off services. In the EU, the Battery Directive mandates recycling, with fines for landfill disposal.
Recycling facilities use specialized processes to recover 98% of the battery’s silver content, which is then reused in jewelry and solar panel production. A single improperly disposed SR626SW5SE can contaminate 6,000 liters of water with silver compounds. Municipal collection programs often partner with manufacturers to offset recycling costs – Seiko funds 72% of its U.S. battery recycling initiatives through retailer partnerships.
“The SR626SW5SE remains a gold standard for precision devices due to its unmatched voltage stability. However, consumers often overlook proper disposal methods, contributing to environmental harm. Always pair battery replacement with responsible recycling.” — John Carter, Senior Engineer at PowerCell Solutions.
Conclusion
The Seiko SR626SW5SE is a reliable power source for critical devices, offering superior performance over alkaline alternatives. Proper handling, replacement, and recycling ensure both device longevity and environmental safety. Always verify compatibility and prioritize certified recycling programs.
FAQ
- How long does the SR626SW5SE battery last?
- Typically 2-3 years in watches and 1-2 years in high-drain devices, depending on usage.
- Is the SR626SW5SE mercury-free?
- Yes. It complies with RoHS regulations, containing no mercury or cadmium.
- Can I use a 377 battery instead of SR626SW5SE?
- Yes. The 377 is identical in size, voltage, and chemistry, making it fully compatible.