Introduction: 4-AA USB Charger for Cellphones & MP3 Players
Mabuhay! This instructable is a simple, portable and easy to use device. It is portable because I want my stuffs to be "on the go" anytime and anywhere -- especially during long travel and blackouts. It is a charger made for any kind of device or gadget that re-charges using USB charger like Apple iPod and Motorola and other phones. I don't have great knowledge in electronics so I made one without using capacitors, resistors and etc. Hope you like it.
Step 1: Materials Needed
Check out the photos.
The USB receptacle I used came from our broken CPU.
Step 2: Create a Housing/casing
I used 1.5mm and 3mm white sintra board. My original concept was to use an empty small ice cream container. I use sintra board to make it simple and look Apple-ish product, LOL. There was no specific plan on the dimensions, I just make sure that the battery holder, switch, USB (female) and all internal parts will fit inside.
For wire (USB) connections click this link: http://www.google.com/imgres?imgurl=https://www.instructables.com/files/deriv/F8A/PSZO/FZHLAGM3/F8APSZOFZHLAGM3.MEDIUM.jpg&imgrefurl=https://www.instructables.com/answers/how-can-you-know-which-wire-on-a-USB-cable-is-eith/&usg=__I_cXDsyoU-Ngo5ZQXiT1ing95Y4=&h=321&w=493&sz=15&hl=fil&start=24&zoom=1&tbnid=ZeJBtcdkayGJEM:&tbnh=168&tbnw=255&ei=dk02Tb-4JIb0cafA9LYB&prev=/images%3Fq%3Dusb%2Bwiring%2Bpositive%2Bnegative%2Bground%26um%3D1%26hl%3Dfil%26biw%3D1024%26bih%3D653%26tbs%3Disch:10,1315&um=1&itbs=1&iact=rc&dur=468&oei=JUw2TeSPGJCurAfVtPDdAg&esq=16&page=3&ndsp=12&ved=1t:429,r:8,s:24&tx=90&ty=102&biw=1024&bih=653
See pictures for details.
Step 3: Test It
Check if it is connected properly and gives out as much as possible 5V, enough to charge cellphones and mp3 players.
I used 4 pcs. 1.2 V rechargeable batteries, for a total of 4.8V
Step 4: Create Cover
Made of 1.5mm and 3mm sintra board.
See photos for details.
Step 5: Finish - Try It!
Be sure to charge the AA batteries first.
Better if you have this:http://www.google.com/imgres?imgurl=http://ecx.images-amazon.com/images/I/31SZbUJoa%252BL._SL500_AA300_.jpg&imgrefurl=http://www.amazon.co.uk/Universal-Charger-iPhone-Samsung-BlackBerry/dp/B004BFFJY2&usg=__6L6jMpa_5nqr0oDLpuHfFP6fzgk=&h=300&w=300&sz=11&hl=tl&start=12&zoom=1&tbnid=2ftuRR-WWH7xVM:&tbnh=161&tbnw=160&ei=ak42TYXPCMjIcZyxtY0C&prev=/images%3Fq%3DUSB%2B10%2Bin%2B1%26um%3D1%26hl%3Dtl%26sa%3DN%26biw%3D1024%26bih%3D653%26tbs%3Disch:10,615&um=1&itbs=1&iact=hc&vpx=758&vpy=198&dur=1144&hovh=225&hovw=225&tx=125&ty=122&oei=Qk42TYnpBMLlrAf62a3QAg&esq=12&page=2&ndsp=15&ved=1t:429,r:9,s:12&biw=1024&bih=653