how to make 4v automatic battery charger at home HD

hello friends today i am showing how to make 4v automatic acid battery charger. this circuit after battery full charge automatic green led blink on and over charging protechtion on subscribe to my channel - https://youtu.be/wTvBSPYd7Vg facebook page - https://www.facebook.com/CreativeOddF/ Follow this link to join my WhatsApp group: https://chat.whatsapp.com/8mxZHi82nkUDqTTBkE6Hnm diagram link :- https://drive.google.com/file/d/0B6rqfDBG5DHLaU53ZEhEa3R6a1E/view?usp=sharing connection diagram :- https://drive.google.com/open?id=1ig574C6Gg1LJW-ndRDU38GJlg2S1d8ip required :- 1. 1K resistor 2. BD140 PNP Transistor 3. BC547 transistor 4. NE555 ic 5. Usb Cable 6. 2 Led 7. Preset 10K Ω 8. 5.1v Zener Diode 9. Zero Pcb Board 10. 2 Crocodile Clip 11. jumper wire 12. same wire 1.how to make simple boat at home https://youtu.be/_Y6MHLYsiJg 2.how to make emergency phone charger at home https://youtu.be/1BKk5CLx0to 3.how to make Pencil Sharpener Machine at home https://youtu.be/_D0N2Yy0TN8 4.how to make small size portable 220 ac inverter at home https://youtu.be/wTvBSPYd7Vg 5.how to make usb bulb light https://youtu.be/AiB5QknX2IY 6..how to make pir automatic on off light sensor at home https://youtu.be/9GdvNP3f71s 7.how to make Electric Screwdriver https://youtu.be/Ult7Ti3L81A 8.how to make usb power tester https://youtu.be/pXRpst5Gjlo 9.how to make electric mosquito repellent Fast Card Burner https://youtu.be/6dN_AMA04rQ 10.how to make all in one android data cable https://youtu.be/I5EoqG342Nw -------------------------------------------------------------- • Licence: You’re free to use this song in any of your videos, but you must include the following in your video description (Copy & Paste): Modern Theme by Nicolai Heidlas Music https://soundcloud.com/nicolai-heidlas Creative Commons — Attribution 3.0 Unported— CC BY 3.0 http://creativecommons.org/licenses/b... Music provided by Music for Creators https://youtu.be/a1gEbCr7QzA