How to choose power supply for a system?

Wireless sensor networks should often be operated autonomously, i.e. without dependence on a central power supply.

There are different types of energy supply, which are suitable depending on the application and can be combined with each other if necessary:

  • Batteries
  • Rechargeable batteries
  • Solar cells
  • Windmills
  • Peltier elements

Quite often batteries or rechargeable batteries are used.
In this case, the following characteristics are important:

  • Battery type (primary cell/rechargeable battery, chemical composition)
  • Capacity (mAh)
  • Voltage
  • Mechanical dimensions
  • Weight

As different systems have different requirements and design options, we recommend to get an expert consulting in order to identify the most viable option. As an example, you may have different options for powering remote water meters in the urban environment compared for smartwatches.

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