Best lithium (Li-SOCl2) cells to power node?

Recent searches reveal that Li-SOCl2 batteries are increasingly recognized for their strength in applications requiring long-lasting power sources. These batteries are particularly suited for low-drain devices that operate in sleep mode, providing a consistent and reliable energy supply while minimizing self-discharge rates. They boast impressive lifetimes, often lasting up to 20 years or even longer, making them a compelling choice for powering nodes in critical systems.

Which Battery Chemistry is Best for Me?

Take the sleeve off a battery and it probably looks just about the same as any other cell. However, what's inside that little metal canister can vary immensely: making certain batteries lighter, reusable, higher capacity, more powerful, or even offering improved temperature tolerance. These qualities may or may not be necessary for your application; but choose the right battery, and you get the best out of your application.

Main Battery Chemistries

Alkaline batteries are commonly found in household devices such as TV remotes, clocks, and torches. They provide a low-cost option but only have one life cycle and should be recycled after use.

Technical

They have a voltage of 1.5V and capacity ranging from 33 mAh to 15,000 mAh, depending on the cell size. Alkaline batteries can handle high discharge currents and operate within a temperature range of -20°C to +55°C.

NiMH Batteries

These rechargeable batteries are more environmentally friendly as they do not contain heavy metals. They have a voltage of 1.2V with a capacity range of 80mAh to 13,000mAh.

NiCd Batteries

Used primarily in high-temperature applications, NiCd batteries have been overtaken by NiMH. They offer a high discharge rate and generally lower price but are less environmentally friendly due to toxic metals.

Li-SOCl2 Batteries

These cells outperform alkaline batteries and can last up to 10 years in storage and sometimes up to 15 years when in operation. They have a voltage of 3.6V and an operational temperature range between -60°C and +85°C.

SLA Batteries

Sealed lead-acid batteries provide reliable solutions for applications where weight isn't a concern, such as in wheelchairs and emergency lighting.

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