Taking accurate measurements is the first step to optimise energy efficiency, while finding ways to move as much of your processing as possible into dedicated hardware modules can cut your power usage by a surprising amount.

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Talking about power consumption can be like running into a minefield of misconception, prejudice and marketing buzzwords. Determining what all the statements mean in reality is not always an easy task. 

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Battery life is one of the most important considerations when designing wireless products. If it is too short, users will have to charge or change batteries often, leading to frustration and possibly less use of the product. But as well as making sure your battery has enough capacity, you need to make sure your product is using it effectively.

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Smartphone battery life remains a frustration for many users. The same problem also applies to a wide range of IoT devices. Although it’s easy to bury yourself in detail seeking a perfect solution, it’s important not to lose sight of the broader picture.

To ensure reliable long-term operation of your smart device, consider battery type, peak power consumption, wireless connectivity protocol, latency, throughput, sleep-states and data transfer requirements.

Rule number one: Always have your end user in mind. Even the most desirable product will be ditched if the battery lets it down.

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