Digital Measuring Paper is a concept device created by Wang Gang that lets you measure exactly how much life is in a "dead" battery. Using a thin strip of paper that you lay onto the battery, you can instantly see how much energy a battery has left.
One device's dead batteries are another one's new source of power. Simple devices like TV remotes can be powered for months on batteries written off as dead. Digital Measuring Paper would make it easier to know which batteries still have a little energy left and which ones truly aren't worth keeping around. Besides being able to help save you money on new batteries, this device also keeps e-waste from clogging up and polluting landfills. Saving money while keeping your conscience clear -- sounds like a win to me.
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