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How to build a battery charger that is stable, secure, and affordable

A new battery charger is getting attention for its durability, security, and affordability.The $400 PowerShot G4+ is a compact, battery-powered charger that charges both phones and tablets at up to 50% of their capacity.It has been built to withstand extreme temperatures and harsh conditions with the help of a proprietary cooling system that is designed to keep the battery from

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