Not all USB ports are created equal, but you can’t always tell, can you? The Practical Meter is designed to help you figure out how quickly your USB device can be charged. It is compatible with any USB charging port, including portable solar chargers, laptops, and PCs. Practical Meter shows you which of your cables are good and which of your ports are charging at full power.
Practical Meter lets you monitor the charge input on any USB-charged device. It is compact, cheap, and affordable
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