Sale! USB Charger
Making a usb charger

Making a usb charger (samsung) with old chargers     Designing a usb chip with old and unused chargers Now you’ve got to think about what to do with old chargers and turn them into USB Universal Chargers! Everybody sooner … Continued

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Power Efficiency Guide
Power Efficiency Guide

This Crazy 56 Year-Old Geography Teacher in Memphis, Tennessee Believed He Could Change the Energy World... And Somehow He Did It.

not rated $ 49.00 Click for more details