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This video shows how to make a simple battery charger, with only two electrical components, these are: -Diode -The light bulb Channel Videos: Tutorial repair energy saving light bulb. Very easy to do • Learn how to repair energy saving light bulbs with... How to repair POWER SAVING BULBS Very easy to do • How to repair POWER SAVING BULBS ... How to charge YOUR CAR BATTERY with a simple invention! • How to charge YOUR CAR BATTERY with a... What happens if I connect a USB memory to the charger? • Look what happens if I connect a USB memory... How to use the MULTIMETER Basic tutorial • How to use the DIGITAL MULTIMETER Tut... If you liked it, don't forget to subscribe and leave your comments If you think it can be useful to someone else, share the video