How to make a Portable USB cell-phone charger

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  • Опубликовано: 9 июн 2024
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Комментарии • 1,3 тыс.

  • @R.U.H.
    @R.U.H.  8 лет назад +57

    thanks for subscribe my INSTAGRAM: instagram.com/romanursu

    • @chocoalmondsss1392
      @chocoalmondsss1392 8 лет назад +1

      hi roman i love all your video but unfortunately i can't make some because I don't have money and my mother won't let but I'll try to keep up watching your videos
      much love from fanss

    • @chocoalmondsss1392
      @chocoalmondsss1392 8 лет назад +1

      +Abdul Prefect come on man nobody's perfect he's just used to RUclips dont be that hard on him

    • @user-vp7sx1eh7t
      @user-vp7sx1eh7t 8 лет назад

      +Roman UrsuHack рома ответь пожалуйста

    • @angeleocorrodead
      @angeleocorrodead 8 лет назад

      +Roman UrsuHack I have all the things for that, and was thinking about it latelly, thanks mate!

    • @TheElijahchris
      @TheElijahchris 8 лет назад

      Bro your videos are great. Can you please show us how to make a mosquito repellent using a buzzer.

  • @johnswitte
    @johnswitte 8 лет назад +16

    Great idea, would like to mention when having a second battery in the box, place a piece of plastic where the terminals could touch the case. This will stop the spare battery from shorting out and going flat. A great project.

  • @gabrielgomescunha
    @gabrielgomescunha 7 лет назад +4

    Some 9v batteries might explode if you open them, use thick gloves and a protective mask. The blast is strong enough to blind you

  • @pdelmercado
    @pdelmercado 8 лет назад +6

    That is amazing. I love all of the electrical "how to". Thank you so much for the tutorial.

  • @1998goodboy
    @1998goodboy 8 лет назад +178

    the second backup battery could short-circuit lol

    • @americahater2
      @americahater2 8 лет назад +4

      No.

    • @1998goodboy
      @1998goodboy 8 лет назад +26

      +MoronicArc yes, because it could touch the side of the can

    • @americahater2
      @americahater2 8 лет назад +11

      I said No.

    • @lorddemon2008
      @lorddemon2008 8 лет назад +4

      you could glue some plastic in to cover the metal. Cut a sheet from a plastic bottle for example.

    • @DanielSimon1995
      @DanielSimon1995 8 лет назад +2

      why woul not short it? i mean, yeah theres a protective layer i'm sure, but the way he placed that spare battery is a tight fit, and you know when you rub 2 metal surfaces one to another, it will scratch the surface resulting in the can may loose its protective layer -if any- and will short it.. not immediatly, maybe never, but if you constantly changing the batteries, it may happen

  • @butangviber
    @butangviber 7 лет назад +10

    I subscribed just because of your intro! Thank you for this informative video!!

  • @themacinematic
    @themacinematic 2 месяца назад

    I remember watching this in 2016, I wanted to make this so bad but I couldn't really do it as a 9 year old. I still love this idea to this day!

  • @davidgreer5395
    @davidgreer5395 8 месяцев назад +2

    Fixing to make me one!! Thanks for the very helpful video. 👍

  • @PetroicaRodinogaster264
    @PetroicaRodinogaster264 8 лет назад +31

    easier to just go and buy one!

    • @mccormick151428
      @mccormick151428 8 лет назад

      that's right

    • @chubrikzhopa4881
      @chubrikzhopa4881 8 лет назад

      +yiğit alp Dalyan dollar tree sell white ones that you put batteries in

    • @eggo5643
      @eggo5643 8 лет назад +3

      Not everyone has a local dollar tree store, or even a dollar for that matter.

    • @middleschoolbeautys6028
      @middleschoolbeautys6028 7 лет назад +1

      +J&M I agree and it could be a fire hazard to try and make one. I guess people could try it but they shouldn't be surprised when they burn down there house 🔥

    • @jeweliette6411
      @jeweliette6411 7 лет назад

      yeah, because getting all these could be even cost money! where would you get wires?

  • @benjaminbroeckel3462
    @benjaminbroeckel3462 7 лет назад +6

    Thanks for the video! I built one this morning, and I am wondering if you conected the second battery in parallel to increase the current, would that be able to take advantage of the "fast charge" option many newer phones have?

    • @vics_mushebs
      @vics_mushebs Месяц назад

      Won't the batteries end quicker

  • @alexandracordero6838
    @alexandracordero6838 8 лет назад +2

    Roman, I am a fan from Costa Rica. I appreciate your videos very much. It amazes me to think how you come up with the tutorials and how your mind works. Thanks again and keep on making more stuff. :-)

    • @sammas8103
      @sammas8103 8 лет назад

      because he is a Russian

  • @Inquire98
    @Inquire98 4 года назад +1

    "Thank You", thank you very much ☺️ Your presentation was REALLY Really really KOOL 😎

  • @louisemasiu1800
    @louisemasiu1800 7 лет назад +8

    I'm watching how to make stuff and how to survive in the wild when I found out N.korea and u.states might have nuclear war

    • @mostaphaelsawady3384
      @mostaphaelsawady3384 5 лет назад

      Louise Masiu actually me to , do you have a specific youtubers channels ?

  • @The_Nonchalant_Shallot
    @The_Nonchalant_Shallot 8 лет назад +6

    You bring creativity to an entirely new level. I've jimmy rigged a lot of things in my life but not once have I ever actually considered using a 9v battery to make a 9v battery cap lol

    • @SeeDaRipper...
      @SeeDaRipper... 10 месяцев назад

      I must admit, i was impressed by that detail as well.

    • @rocknrollreststop7110
      @rocknrollreststop7110 8 месяцев назад

      And the amount of times I’ve needed a cap and had 200 dead 9 volts on my desk 😂 (bio med tech)

  • @sl-st8mv
    @sl-st8mv 2 года назад

    the earth need more genius like u!

  • @zetaminor77
    @zetaminor77 7 лет назад

    Thanks for the video! I guess we could also use some of the ideas to power a DIY portable Bluetooth speaker. 😀

  • @soratenshi2847
    @soratenshi2847 7 лет назад +220

    We all know nobody will do it

    • @tanishajoshi833
      @tanishajoshi833 7 лет назад +1

      hehehehe

    • @liam-lh6ve
      @liam-lh6ve 7 лет назад

      hissss

    • @bigallan7181
      @bigallan7181 7 лет назад +15

      I will, I made 7 of them and have it to my friends and family, and making more, it's pretty fun to make

    • @SusanMinhTrangNguyen
      @SusanMinhTrangNguyen 7 лет назад +4

      I also made a couple and passed it to family. It makes a great emergency charger. I make my kids pack one when they go hiking or camping.

    • @SmarkDepper
      @SmarkDepper 7 лет назад +2

      Don't looks very efficient. How much can charge it in your device?

  • @danelovell
    @danelovell 8 лет назад +4

    Is it just me that noticed that it looks like he shorted out the second 9-volt battery when he put it in. Looks like both terminals may have touched that metal box???

    • @ebutuoy4811
      @ebutuoy4811 8 лет назад +1

      Yeah I noticed this should no better than that really

  • @PatrickLavigne
    @PatrickLavigne 7 лет назад

    just one thing, i see potential shorting of the backup battery as it is unprotected in a metalic case. Great idea!! I'm trying it this weekend!

  • @gabrielageorgieva
    @gabrielageorgieva 8 лет назад

    The intro is soooo thematically :)

  • @RoshanAhmadd
    @RoshanAhmadd 8 лет назад +115

    Welcome to mother brother tory, where is safety number 1 priority

  • @cosminvoinea4859
    @cosminvoinea4859 7 лет назад +5

    IS DANGEROUS FOR MY PHONE BATERY IF I USE THIS REGULARY?

    • @gamer717pro2
      @gamer717pro2 3 года назад

      Not if you have a 5 volt regulator but most car chargers already regulate the voltage to 5 volts
      So no it’s not dangerous just don’t short circuit the battery

  • @donnaallenministries
    @donnaallenministries 7 лет назад

    woooooow...this is AAAAMAAAAZING! You are super smart and talented!

  • @technospear
    @technospear 8 лет назад +1

    Great stuff! As usual

  • @JKTCreation
    @JKTCreation 8 лет назад +79

    Who else is here to see it charges with AA battery, not the 9v? F....kk...

    • @maxthecamper5752
      @maxthecamper5752 8 лет назад +7

      easy
      if you have a battery casing for it, you'll know what to do.
      -idk lol-

    • @reececox4756
      @reececox4756 7 лет назад +4

      Crazy Rushon hacker

    • @ahmedkbila8704
      @ahmedkbila8704 6 лет назад +1

      Jackie

    • @greygoat1241
      @greygoat1241 6 лет назад +1

      I thought it was double a

    • @i80386sx
      @i80386sx 3 года назад

      AA batteries would've been a better choice.

  • @kamarirhoades8278
    @kamarirhoades8278 7 лет назад +13

    it worked thanks

  • @adriansaloma5567
    @adriansaloma5567 2 года назад

    Where did you buy the small tools or like anyone know sets like that for cheap online to in stores?

  • @marlanjayans1620
    @marlanjayans1620 8 лет назад

    Thank you for sharing your knowledge.

  • @swwimer1988
    @swwimer1988 8 лет назад +6

    I think it's better to use a rechargeable battery🤔🤔🤔🤔...?
    right

  • @Nefertems
    @Nefertems 8 лет назад +6

    Couldn't you connect the second battery in parallel? Also, if the car charger desires 12V, would it be more efficient to offer it the series combination of 18V or starve it with 9V? Cool video, I especially liked what you did with the through-hole soldering. Thank you.

    • @americahater2
      @americahater2 8 лет назад

      No, that wouldn't work. It wouldn't no, but its the Mexican's fault you know that. I to know that.

    • @schabingcraft
      @schabingcraft 8 лет назад

      it depends on the exact ic on the board. if the IC can handle 18V, i would say that its more efficient, especially because you can discharge the batteries much further and the voltage is still sufficient to power your charger

    • @Nefertems
      @Nefertems 8 лет назад +2

      You can connect two batteries in parallel in a car, but it requires a diode between to bias them in one direction (or relay or "battery isolator"). If you don't, while the circuit is unpowered the batteries will kill one another trying to charge each other in a sort of resonant circuit; dissipating the energy through the internal resistances and connections. I imagine you could do the same thing by salvaging a schottsky diode from just about anything and putting it between the two 9Vs thus giving you nearly twice the energy at the same 9V.

    • @VOLTRONDEFENDER4440
      @VOLTRONDEFENDER4440 3 года назад

      If it’s in parallel same voltrage but amperage is increased

  • @sowadnayan3826
    @sowadnayan3826 7 лет назад

    Thank you So much for your Innovative Idea.............
    Love It !

  • @quarstrongforce
    @quarstrongforce 6 лет назад

    GREAT REUSE OF THE USED PART. LOVE IT

  • @dearurquizu
    @dearurquizu 8 лет назад +5

    What about if I go through the customs at the airport, will I have issues?

    • @RajeshPranayKiran
      @RajeshPranayKiran 8 лет назад +1

      Charge your phone 100% and reach your destination, take some time and make a new charger at your current location. Follow it or else buy a 10000 mah powerbank.
      Never try to even take it through the security check in. It would be a serious problem on your end. Because these wiring and cabling on small scale self made devices are strictly prohibited.

    • @dearurquizu
      @dearurquizu 8 лет назад

      :)

    • @kailjoyce87
      @kailjoyce87 5 лет назад

      Are you serious 🤦🏼‍♀️

  • @christopherhampe6848
    @christopherhampe6848 7 лет назад +52

    useless for newer phones with more than 1000 mAh capacity. Those 9V batterys have an average capacity of 200 mAh.
    Buy a powerbank.

    • @johnnyRandomadness
      @johnnyRandomadness 7 лет назад +8

      I really think the point of this, is a project video, for the fun of the project honestly. Very valid point that it's more practical to just buy a commercial powershot.

    • @kwf9225
      @kwf9225 7 лет назад +2

      Christopher Hampe xD fuckn nerd

    • @kylethomas6599
      @kylethomas6599 7 лет назад +2

      Christopher Hampe I have 600mah liion batteries

    • @BIGBADWOOD
      @BIGBADWOOD 7 лет назад +3

      Not to smart ! ............... Yellow is Plus (+) and Red is minus (-)

    • @aakashsahu8322
      @aakashsahu8322 6 лет назад +1

      Christopher Hampe thats an emergency power bank

  • @sarahickerson2442
    @sarahickerson2442 5 лет назад

    Looks like nobody would ever do it, but it was fun to watch

  • @laurispeterisvejs4007
    @laurispeterisvejs4007 8 лет назад

    Thanks realy muck i had all needed things lying around and i whanted to buy phone charger, but now i can make my own! Thanks!!!!!

  • @jtjjbannie
    @jtjjbannie 7 лет назад +7

    Wont that second battery short out against the inside of the metal box?

    • @llawliet5647
      @llawliet5647 7 лет назад +1

      no idea I'm honestly confused as hell....

    • @fpsmusicc4987
      @fpsmusicc4987 7 лет назад

      +L Lawliet death note is bae

    • @Zushikikato
      @Zushikikato 7 лет назад

      Yes it will so put something on the box where the terminals of the battery makes contact. Rubber or plastic will do.

    • @1milylily
      @1milylily 7 лет назад +1

      +Brian Tuazon well didn't he put some plastic from a water bottle in there?

    • @Zushikikato
      @Zushikikato 7 лет назад +1

      1milylily Well he did but not on the part where the extra battery terminals hits the case.. So if you guys are gonna DIY this put something there..

  • @thegamingfury7801
    @thegamingfury7801 7 лет назад +3

    1:24 what is this,the liquid if you use to battery cap?

    • @bigallan7181
      @bigallan7181 7 лет назад +1

      Yeah!

    • @RJ-ue3ub
      @RJ-ue3ub 7 лет назад

      probably some kind of alcohol to clean it so it makes better contact

    • @michaelpimentel3002
      @michaelpimentel3002 6 лет назад

      It looks like flux. It's made of rosin and alcohol.

  • @kosakCZ
    @kosakCZ 7 лет назад

    Great job Roman ! Hello from Czech

  • @Smartmouthgamer23rd
    @Smartmouthgamer23rd 7 лет назад

    This could be good for some of those make at home Birthday/Christmas presents.

  • @ciolamorta
    @ciolamorta 8 лет назад +13

    I advice you to isolate the poles of the spare battery, if you don't want to have a portable egg fryer.

    • @djrichardson5671
      @djrichardson5671 8 лет назад +2

      That's what I was thinking

    • @americahater2
      @americahater2 8 лет назад +1

      But that would ruin it all! An egg-frying phone charger would be awesome!

    • @kalisgaming1010
      @kalisgaming1010 8 лет назад +1

      Does he really think someone will make this

    • @meso06
      @meso06 8 лет назад

      +Kali's Gaming i was thinking that. Its cool and everything but its cheaper to buy the proper thing from the store. Here you need to buy the soldering equipment batteries glue gun and then spend time making it. Its a cool lil project but nah i see these make your own thing videos and be like ill watch and admire your work.

  • @debabrataroy1207
    @debabrataroy1207 8 лет назад +8

    can you make a video of rechargeable power bank?? and a solar power bank with 18650 battery??

  • @Redstone359
    @Redstone359 Год назад

    I love your channel very implemented in stuff like this

  • @ericb8128
    @ericb8128 8 лет назад +1

    I have already made a iphone charger similar to this on my own...but your makeshift nine volt connector is going to save me money and time..i am in desperate need of one. awesome

  • @adistef
    @adistef 8 лет назад +3

    this is not ok, there is not much power in a 9v battery, 300-500 mah maybe

  • @Eric-rx8ok
    @Eric-rx8ok 7 лет назад +9

    why do you link your youtubechannel on RUclips? wtf

    • @ToastBubbles
      @ToastBubbles 7 лет назад +5

      because people like to post content like this on Social Media, and this water mark is a good way to advertise and be recognized for his effort.

    • @Eric-rx8ok
      @Eric-rx8ok 7 лет назад

      ToastBubbles oh okay thank you

    • @nikitamestrytamore2384
      @nikitamestrytamore2384 7 лет назад

      ToastBubbles

    • @Vouax
      @Vouax 7 лет назад +1

      FaZe QuanTo every youtuber does.

    • @bitelaserkhalif
      @bitelaserkhalif 7 лет назад +1

      prevents freebooting

  • @YuTonyGraceRevolution
    @YuTonyGraceRevolution 7 лет назад

    Thankyou for sharing this!! do we have to use an 9volt battery? what is the optimum battery voltage we could use? thankyou :-)

  • @912lilrizenmusic4
    @912lilrizenmusic4 7 лет назад +1

    pretty cool, just wish I had the right tools

  • @vladislavdamqnov2072
    @vladislavdamqnov2072 7 лет назад +3

    only problem is a 9V battery typically has a capacity of around 500mAh. it'll charge my phone at a max of 20-30%

    • @jacklinares7179
      @jacklinares7179 7 лет назад +1

      yah dumbass

    • @vladislavdamqnov2072
      @vladislavdamqnov2072 7 лет назад +1

      Then this is completely useless. I`ll be going through the 9V like freshly baked bread. And they`re not rechargeable, so that makes it suck even more. I`d just use a boost converter and a 2000mAh 3.7V rechargeable battery and the end game will be much more feasible

  • @vincentsulla2399
    @vincentsulla2399 7 лет назад +4

    HE REALLY CONNOT MAKE THE BATTERREIS PORTABLE CHARGER. HE REBIULDE IT,HE CONNOT MAKE IT OWN CIRCUIT BOARD,,

  • @justgomywayst
    @justgomywayst 8 лет назад

    like your style you make the stuff, and the dynamic in your videos. Whatch out to insulate the backup battery in that video...

  • @jonedgar1981
    @jonedgar1981 5 лет назад

    I came out of curiosity, then stayed for that "Is that an advanced modern Russian robot" voice :)

  • @JustCrysisJack
    @JustCrysisJack 8 лет назад +43

    Warning!
    Your Phone has a Maxinum Voltage of 3.7V - 3.8V
    And your Original Charger is a Output Voltage of 5V
    Your Powerbank is a Charging Voltage of 9V
    Its Nice. The Your Phone charge up faster, but it may happen that your Phone Battery may [ LEAK, EXPLODE ] because its overcharge at a High Voltage. I Recomanded you to just buy Real POWERBANK for $1 - $3 in any Shops. You can also buy anything you want. You can also make this PowerBank in your House but your Battery must be in a Low Voltage of 5V
    I am telling you for your SAFETY. Thank You!

    • @dejanbrice8774
      @dejanbrice8774 8 лет назад +9

      The USB charger has a step down amp.

    • @nickwilliams5861
      @nickwilliams5861 8 лет назад

      cnzuhfibcfhh

    • @Wolf-yp2qk
      @Wolf-yp2qk 8 лет назад

      +Dejan Brice Step down amp? There are actual stories of phones exploding from circuits such as these, plus the phones don't actually charge from this, despite the voltage input. The thing is, the amperage going into the phone isn't enough to charge it, and would result in a excessive buildup in voltage and in return ruin your phone. Because car chargers usually always have an input of 12v and a decent amperage, the circuit is built to handle THAT and only that amount of wattage input.

    • @auzzierocks
      @auzzierocks 8 лет назад +8

      did you not notice the step down converter or actually watch the video?

    • @hadihassu400
      @hadihassu400 8 лет назад +3

      I apperetiate it man but why is the circuit for ? It is for converting 12 to 5 or 4 volts the car gives an out put of 12 volts the circuit in the carger converts it to 5 or smothing thats y roman used the circuit and iphone and any other smart phone when dectects an overvoltage and undervoltage it disconnects the charger immediatly by itself

  • @nickmacarthur8849
    @nickmacarthur8849 5 лет назад

    What liquid did u pour before the soldering process??

  • @rominhawk3949
    @rominhawk3949 6 лет назад

    Mr. romanursu; another good one of your presentations. thank you.

  • @ArrtusMusic
    @ArrtusMusic 7 лет назад +1

    Can you also charge the battery through the USB port?

  • @psoriasisandpsoriaticarthr5072
    @psoriasisandpsoriaticarthr5072 8 лет назад

    I watched several videos you upload on youtube . i hope you can also the things that we need for simple projects or repair. And how to use it.

  • @salenabina2808
    @salenabina2808 7 лет назад

    what you using for welding cables?

  • @tanasemirceaviorel5029
    @tanasemirceaviorel5029 8 лет назад +1

    damn that's a goodURSS soldering iron, i bet i was used to solder cooper wires in T-34's :))

  • @saad_boss0463
    @saad_boss0463 7 лет назад

    which solder/desolder iron do you use

  • @wrecklessdaath
    @wrecklessdaath 7 лет назад

    do you have any videos on how to make photcell projects that can put out 5v at the bulb and run off 3 or 4 aa

  • @inara9888
    @inara9888 7 лет назад

    OH MY GOD amazing!!!!! I will surely try this!!!! 👏👏👏👌

  • @hadihassu400
    @hadihassu400 8 лет назад

    Damn man u are genious m defenitely donna make one for myself not because of money problem but because of it uses battries instead of charging it up thats a cool thing

  • @deavannoah1273
    @deavannoah1273 7 лет назад

    Hello Roman. I was wondering if it would be possible to make a USB cell phone power bank/charger using both a 9v battery and a AA/AAA battery circuit. Also, have the circuit switch between the two types. Is this too complicated to make?

  • @tonito598
    @tonito598 7 лет назад

    Great job.... but how can we use a soldering iron in times of total blackout?

  • @MochaTater
    @MochaTater 7 лет назад

    Is the reason you put that piece of plastic on the bottom so there was a barrier between the circuits and the metal? So that way no stray electrical signals traveled through the device?

  • @sedutube2851
    @sedutube2851 4 года назад +1

    where i can get this materials? especially the first?

  • @gtzlive
    @gtzlive 7 лет назад

    what liquid do you use for soldiering ?

  • @lawrencesamuel6087
    @lawrencesamuel6087 6 лет назад

    Thank you....Helped me a lot....u could have bought the terminals separately instead of just breaking it from the 9v battery....The video was Helpful 👏

  • @user-zl2ko5zk2e
    @user-zl2ko5zk2e 7 лет назад

    Where and for how much can l purchase a handheld soldering device like the one you're using?

  • @BingoBoingo
    @BingoBoingo 7 лет назад

    what did you use to cut into the altoids tin?

  • @freefall2003
    @freefall2003 7 лет назад

    good ideal.. one thing if someone hasnt said it.. insulate the spare battery slot so the top of the battery dont short out an cause a fire or something..

  • @jeremyhighland4619
    @jeremyhighland4619 7 лет назад

    Great idea! Thanks for sharing

  • @wb5rue
    @wb5rue 7 лет назад

    love the intro!

  • @bigallan7181
    @bigallan7181 7 лет назад

    Roman UrsuHack! I made 10 of these, I recently just made 2 of these with a double head USB charger!

  • @ChasenGunzOutdoors
    @ChasenGunzOutdoors 6 лет назад

    Enjoyed the video keep up the good work

  • @lekefemi9685
    @lekefemi9685 6 лет назад

    These stuffs are very great for remote areas without electricity. Where your powerbanks cant be charged after depletion.So long you have AA batteries you are good.

  • @daneshadavidson8231
    @daneshadavidson8231 5 лет назад

    You could put what you need below but very helpful thanks.

  • @celestineokeogheneebinum310
    @celestineokeogheneebinum310 7 лет назад

    Great one there man, I gat it, Thanks

  • @Mind_Mirror
    @Mind_Mirror 7 лет назад

    Which video editing software you use sir.

  • @sukichana2694
    @sukichana2694 7 лет назад

    how long will a 9v battery last and is it possible to replace the 9v battery with a rechargeable aa300mah its a 9.6v

  • @Nalah-mn5yp
    @Nalah-mn5yp Год назад

    What type of USB port did you use?

  • @AiikoQueen
    @AiikoQueen 8 лет назад

    And also, is there a way to recharge the battery itself once its finished?

  • @niti288
    @niti288 7 лет назад

    LEDs are eating up my batteries.. will cuting off them from PCB will work?? i got 4 leds on pcb!!

  • @trilltroned5296
    @trilltroned5296 8 лет назад

    tanks, ima really use this, I'm always running out of charge and don't want to stay to the wall plug up.

  • @user-ni8hx6di5i
    @user-ni8hx6di5i 2 года назад

    Do you have the name or link of the usb car charger you used ?

  • @washitbyagianttruck9275
    @washitbyagianttruck9275 8 лет назад

    OMFG i love this channel, this is genious but i don´t have the tools to make things like that :7

  • @bitifor
    @bitifor 7 лет назад

    Bravo, super treaba !

  • @salty1234567890
    @salty1234567890 8 лет назад

    They sell this at dollar store's for $1 but still pretty cool!!

  • @pavsingh9232
    @pavsingh9232 7 лет назад

    how about if your batter dies in pottable charger ? get a new battery or get a recharable battery?

  • @zbyszekjozefiak6832
    @zbyszekjozefiak6832 7 лет назад

    fajny gadzet i przydatny w praktyce

  • @owenkilleen
    @owenkilleen 7 лет назад

    Now that! Is an intro!

  • @simpleaf430
    @simpleaf430 6 лет назад

    where can I get dat Usb port thing?

  • @HappyQuailsLC
    @HappyQuailsLC 6 лет назад

    You should line any metal case containing batteries with a non-conductive surface for safety.

  • @Harshamin
    @Harshamin 8 лет назад

    Hey roman can u make a usb step up converter at the place of car mobile charger ..?
    For low voltage to High

  • @levistubbs4352
    @levistubbs4352 7 лет назад

    good job i build things like this from your ideas.

  • @cdawson198600
    @cdawson198600 7 лет назад

    You should really have a diode in the circuit to prevent back charging although there's probably one in the car adapter circuit.

  • @vtslmokani72
    @vtslmokani72 8 лет назад

    thanks mannnnn...u r awsome

  • @edjackson4389
    @edjackson4389 8 лет назад

    the backup battery is gonna short in that metal can. needs a small bit of plastic to cover the posts

  • @_RfPJ
    @_RfPJ 3 года назад

    sorry i have a question How long does this battery 9v last?