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In a previous video I showed you how to utilize such a TFT LCD with integrated touchscreen functionality Now while this is a great way to display data and interact with your projects, it is not perfect if we measure the current consumption of the whole project, we get current draws of around 200 milliamps Of course that is not a problem if you work with mains voltage, But lets imagine we power this project with a battery. Like this INR18650-25R which comes with a nominal voltage of 3.6 volts and a nominal discharge capacity of 2500 milliamp hours. So an overall energy of 9 watt hours The LCD requires around 1 watts while displaying its image Which means we could theoretically power it for only up to 9 hours Which is not that great for portable projects Thankfully though I recently discovered so called ePaper modules, which claimed to have an ultra low power consumption That is why I got myself two of them from the company Waveshare. And in this video We will not only find out how the