3.6V D ER34615M Li-SoCl2 Battery 14000 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."

 Due to its combination of high energy capacity, extended service life, and excellent pulse current capability, the ER34615M battery is widely used in demanding industrial and professional environments. Typical applications include smart utility meters (especially those with advanced communication modules like NB-IoT or LoRaWAN), GPS asset trackers for harsh environments, industrial IoT sensors and devices, military and aerospace equipment, oil and gas exploration instruments, and remote monitoring systems that require periodic high-power transmissions.

The primary distinction lies in their internal construction and performance characteristics related to current delivery. A standard ER34615 typically uses a bobbin-type construction, which is optimized for very low, continuous current drains and maximum overall capacity/longevity under such conditions. The ER34615M, with its spirally wound construction, is specifically engineered to provide significantly higher pulse currents, making it suitable for applications that have intermittent, but substantial, power demands, like wireless data transmission.

The ER34615M offers several key advantages for critical applications:

• Superior Pulse Current Capability: Its spirally wound design allows it to deliver powerful current bursts, essential for radio communication, valve actuation, or motor startups.
• Very High Energy Density: As a D-size Li-SOCl2 cell, it packs an enormous amount of energy, enabling extremely long operational lifespans.
• Exceptional Shelf Life: With a self-discharge rate often below 1% per year, it boasts a shelf life of 10-20 years.
• Stable Voltage Output: Provides a consistent 3.6V throughout most of its discharge cycle, ensuring reliable performance for sensitive electronics.
• Wide Operating Temperature Range: It performs reliably in extreme environmental conditions, typically from -55°C to +85°C.

No, the ER34615M battery is a primary (non-rechargeable) cell. It's designed for single use only. Attempting to recharge this battery is extremely dangerous and can lead to severe hazards such as leakage, overheating, rupture, fire, or even an explosion. Always replace depleted ER34615M batteries with new ones.

While generally safe when used correctly, it's crucial to adhere to these important safety measures:

• Never attempt to recharge these batteries.
• Do not short-circuit the battery terminals, as this can cause rapid heat generation and potential hazards.
• Avoid puncturing, crushing, disassembling, or heating the battery above its specified temperature limits or exposing it to open flame.
• 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.
• Keep batteries out of reach of children and pets to prevent accidental ingestion or misuse.