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Which types of batteries for your IoT devices?

What are the various batteries available to IoT entrepreneurs and what are their specificities?

Both generate electricity through electrochemical reactions between two poles, positive (+) and negative (-), and thanks to an electrolyte (solution). Using various materials for the poles and different electrolyte compositions, we can make a huge variety of batteries with different properties and voltages. For example, alkaline batteries are widely found in shops and used in consumer products, lithium batteries, zinc-air batteries, silver-oxide batteries or a mix of these chemistries are examples of batteries available on the market.

Choosing the best battery for your IoT device can be quite challenging given the wide variety of options available. Primary batteries are single-use, while secondary batteries are rechargeable, both generating electricity through electrochemical reactions involving positive and negative poles with an electrolyte solution.

IoT devices require light, compact batteries with high energy density and voltage. Lithium batteries are particularly well-suited for this purpose. They offer high performance and reliability, featuring high voltage due to lithium as the anode and an energy density up to ten times that of zinc-oxide batteries. Moreover, lithium batteries can function at low temperatures, and some variants can even withstand high temperatures.

There are two main types of Lithium Thionyl Chloride (Li-SOCl2) cells: bobbin and spiral constructions. Bobbin cells are ideal for applications requiring low continuous or moderate pulsed currents, such as metering devices or parking sensors. They can handle wide pressure and temperature fluctuations (from -60°C to +150°C), making them perfect for use in remote locations and extreme environments. When combined with pulse support devices like capacitors, they can sustain higher pulses and temperatures, offering the best of both worlds in performance.

PKCELL’s new range combines reliable, low self-discharge Li-SOCl2 cell technology with advanced Lithium-ion Capacitors (LIC) or Hybrid Pulse Capacitors (HPC). These capacitors have low self-discharge and high capacitance, ensuring long lifespans (10+ years) for connected devices. This range balances pulse-sustaining capability, operating temperature range, and performance stability over time.

When selecting a battery for your IoT device, it’s essential to consider several factors.

First, the nominal and cut-off voltage requirements of your electronics. Different technologies and chemistries provide varying output voltages, so select one that ensures your device remains above the cut-off voltage throughout its lifetime.

Additionally, consider the environmental temperature where the device will be deployed to ensure a continuous power supply. Finally, the consumption profile, including the maximum pulse current and frequency, is crucial. Li-SOCl2 bobbin technology is suitable for limited pulse values and long lifetimes, while Li-SOCl2 spiral, Li-SOCl2 bobbin with pulse support, and Li-MnO2 are better for high pulse applications.

Still unsure about which battery to choose? Why not submit your device’s consumption profile to our application engineers for a personalized recommendation? Our team is here to help you find the perfect battery solution for your specific needs. Feel free to reach out with any questions or comments, and let’s work together to power your IoT innovations efficiently!

Post time: Jun-21-2024