Sale! USB Charger
Build usb charger (samsung)

Build 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

not rated $ 4.00 $ 2.00 Add to cart
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