Glove Box Gadget Mini Cellphone Charger

by mp 15-22

21K31914

Intro: Glove Box Gadget Mini Cellphone Charger

Here's a instructible I put together that is very handy and portable. Also going to post it to the contest glovebox gadgets because that's where I keep mine for emergency. If I forget to plug my phone in while on the road and I have to stop in somewhere for awhile I'll take it and my cable drop the charger in my pocket my phone in its case plug it in turn it on and it charges as I go and do and can still use it while charging. Hope you enjoy it so vote for and any questions or comments feel free to ask. Thanks for looking.

STEP 1: Material

I purchased this neat little device called a dc to dc step up converter. In practical terms it's just a dc low input to high output power module.

It's a 1.5 volt dc to 5 volts dc at 1.2amps usb.

STEP 2: Materials Also

Here is a AAA battery holder with a on off switch for power to the dc to dc module.

STEP 3: More Materials

Heat shrink.
This is a piece of tubing that when heat applied it shrinks. Works mostly for electronics but I used it on many other applications. Such as on frayed shoe laces or to make something round to fit in a larger space.

STEP 4: Even More Materials

Here are 2 of the main things needed for this instructibles. A soldering iron and resin core solder. I prefer resin core for the purpose the flux is already in the center of the solder. Works great on a clean surface not to great on a dirty surface until the surface heats up. The soldering iron is a 20 watt for small jobs.

STEP 5: Even More Materials Than Before

Here are the other tools used for easier wire cutting and stripping. You can also use a knife and fingernail clippers for cutting and stripping wire just be careful though.

STEP 6: The Few Bits and Pieces of Parts Needed

Here you see the battery holder, the heat shrink, dc to dc step up module and batteries all to getter ready to be put into one component.

STEP 7: Finished Product

Here are a few pics of the finished product.
Not very hard to make but have to be pretty quick and precise to not get things to hot and not take to long because the chips and circuits can melt or shorten out if they get to hot.
On the module is a negative and positive terminal. Solder the red wire to the positive terminal and the black wire to the negative terminal. I used the heat shrink to cover the module to protect it from be shorted out by metal parts or anything that can get the circuits on the board. It also works as somewhere glue epoxy or whatever you want to use to mount it to the battery holder. I used crazy glue.

14 Comments

JohnyS1 9 years ago

This sure is really helpful.

mp 15-22 9 years ago

Not really sure. It's 6 volts in out is 1.5 amps at 5 volts. Hope that helped some.

Martin GimmingM 9 years ago

Yea.. about that... you are writing in your instructable that you use as DC DC step up converter from 1.5V to 5V.

If you parallel connect your batteries, and they are non rechargeable you will get 1.5V for non rechargeable and 1.2V for rechargeable batteries and perhaps a total of 4800mAh.. but the DC DC step up conversion will wreck havoc on the capacity, so from the ~6.25 you can expect somewhere close to 600mAh at 5V.

Actually it would make much more sense using rechargeable cells (1.25V), serial connect them.. you'll get 5V at once at don't loose lots of juice in the conversion process.

The reason they use DC DC step up converters in regular battery packs is because the 18650 li-ion cells have a nominal voltage of 3.7V. Not enough to charge a usb port, and to hight to serial connect them.

mp 15-22 9 years ago

It uses 4 tripleA batteries n will provide a full charge on a device of up to 4 times

9773776901 9 years ago

is requires how much and which batteries

mp 15-22 9 years ago

Actually I have but then it would require extra time to disconnect n reconnect it every time you wanted to go mobile. I have another instructibles I haven't published yet that has something line ur talking about. Check out my backup battery bank to its on here. It's for camping or to use at the beach. Or to put in a small boat for fishing.

kakashibatosi 9 years ago

Have you thought of reworking this to run off a line connected to the cigarette lighter? You could splice a line to share it so that it wouldn't occupy the actual outlet.

sp00k79 9 years ago

Awesome device! This would be so useful for those days at the beach, the fair, etc. All those places you go where you carry a bag, but there's no power. Throw this handy little thing and some extra batteries in your bag and you're set! Your instructable was very helpful and informative. Thanks!

mp 15-22 9 years ago

If you look you can find a 5 pack like $9 free shipping

mp 15-22 9 years ago

Thanks a lot glad to be of help you can buy all the parts on eBay n Amazon.

MsSweetSatisfaction 9 years ago

Awesome little device! Definitely a very useful thing. We are so dependent on our cellphones and yet the cellphone companies have yet to build us what you have shown us how to build here. Nice job, thanks for sharing!