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USB current and voltage meter

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Your tablet or mobile phone is really loading as it should? The source, the cable or even the device may be the problem. You can discover the defect using a USB current and voltage meter like this one below, that's pretty cheap ...

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Stack 10440 Li-ion 3.7 V

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The mishandling of Li-ion battery 3.7 V 10440 can burn a toy or remote control! As they have the same appearance and size of a AAA battery (stick as know in Brasil), some unsuspecting can try to use them and not realize that the ...

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