3.6V AA ER14505M Li-SoCl2 Battery 1800 mAh | Pkcell

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Passivation is an interesting natural phenomenon observed in Lithium Thionyl Chloride (LiSO₂Cl₂) batteries! When lithium metal touches the thionyl chloride (SOCl₂) electrolyte, a thin, protective layer forms on the surface of the lithium negative electrode. This layer, mostly made up of Lithium Chloride (LiCl), creates a high-resistance barrier that prevents a continuous reaction between the lithium and the electrolyte. Isn't it fascinating how this process helps maintain the battery's performance?

Passivation has some excellent benefits along with a few potential drawbacks that are important to consider:

Benefits:

• Low Self-Discharge: The passivation layer does a fantastic job of slowing down any unwanted side reactions between the lithium and the electrolyte, leading to an impressively low self-discharge rate. Thanks to this, LiSO₂Cl₂ batteries can be stored for many years, often over 10 years, while still keeping most of their capacity intact.
• Long Shelf Life: Because of the low self-discharge, these batteries can hold onto their energy for quite an extended period, which is great for long-term storage.

Potential Drawbacks:

• Voltage Delay: When a passivated battery starts discharging—especially after being stored or during high-current pulses—the current first needs to break through or dissolve the high-resistance passivation layer. This can temporarily drop the battery's voltage below its normal operating level before it bounces back. This occurrence is often referred to as "voltage delay."

Thanks to its ability to provide both long-term, stable power and strong current pulses, the ER14505M is often found in industrial and professional settings. You'll see them in smart utility meters (especially those with wireless communication capabilities), GPS asset trackers, remote monitoring equipment, wireless security sensors, and various industrial IoT (Internet of Things) devices. Its AA form factor also makes it a popular upgrade from alkaline AAs in scenarios where extreme longevity and consistent voltage are critical.

Opting for an ER14505M battery offers several significant advantages:

• Excellent Pulse Current Delivery: Its specialized internal design means it can handle short, powerful current demands, which is vital for things like wireless data transmission.
• High Energy Density in AA Size: It packs a remarkable amount of energy into a standard AA form factor, leading to exceptionally long operational lifespans – often many years.
• Unrivaled Shelf Life: With a self-discharge rate typically under 1% per year, these batteries can be stored for 10 to 20 years without significant capacity loss, perfect for devices with extended deployment.
• Stable Voltage Output: It maintains a consistent 3.6V throughout most of its life, which is crucial for sensitive electronic components.
• Broad Temperature Tolerance: It performs reliably in harsh conditions, generally from -55°C to +85°C.

Absolutely not. The ER14505M is a primary, non-rechargeable battery. It's designed for a single use cycle. Attempting to recharge this type of battery is extremely dangerous and could lead to severe hazards, including leakage, overheating, rupture, fire, or even an explosion. Always replace depleted ER14505M batteries with new ones.

The ER14505M stands apart from typical alkaline AA batteries due to its higher voltage (3.6V vs. 1.5V), dramatically longer lifespan, superior voltage stability, and wider operating temperature range.

Compared to a standard bobbin-type Li-SOCl2 AA cell (sometimes just called ER14505 without the 'M'), the ER14505M's spirally wound construction allows for significantly higher pulse current delivery. While bobbin cells excel in very low, continuous drain applications, the "M" version is specifically engineered for intermittent, higher power demands like wireless communication, making it a distinct choice.

While generally safe when used correctly, adhering to these important safety guidelines is essential:

• Never try to recharge these batteries.
• Avoid short-circuiting the terminals, as this can generate rapid heat and create a hazard.
• Do not puncture, crush, disassemble, or heat the battery beyond its specified temperature limits or expose it to open flames.
• Store batteries in a cool, dry place, away from direct sunlight, moisture, or extreme heat.
• Ensure proper disposal of used or damaged batteries according to local regulations for lithium batteries, as they contain hazardous materials.
• Keep batteries out of reach of children and pets to prevent accidental ingestion or misuse.