Introduction: Convert Your Old Laptop Battery Into a Power Bank

In this project I will show you how to convert a battery from an old laptop into a power bank which can charge an ordinary phone 4 to 5 times with a single charge. Let's get started!

Step 1: Watch the Video!

The video gives you a basic overview which steps are necessary to create your own power bank. But I will present you more detailed information in the following steps.

Step 2: Buy the Necessary Components!

Here is a list of parts you will need for this project:

Amazon.com:

1x TP4056: http://amzn.to/1SRDXZc

1x Micro USB Breakout: http://amzn.to/1NJd4if

1x Toggle Switch: http://amzn.to/1SRE1Zb

1x XL6009 Boost Converter: http://amzn.to/1PNqz8a

1x 5mm Red LED: http://amzn.to/1SRE9HY

2x 5mm Green LED: http://amzn.to/1NJdftY

1x 2.2kΩ Resistor: http://amzn.to/1PNqL7A

1x Female USB Port: http://amzn.to/1PNqKAt

Amazon.de:

1x TP4056: http://amzn.to/1NnD3hB

1x Micro USB Breakout: http://amzn.to/1PNqUYL

1x Toggle Switch: http://amzn.to/1KiXL53

1x XL6009 Boost Converter: http://amzn.to/1PNr1TX

1x 5mm Red LED: http://amzn.to/1PNrrd5

2x 5mm Green LED: http://amzn.to/1PNrvcL

1x 2.2kΩ Resistor: http://amzn.to/1E9uEhN

1x Female USB Port: http://amzn.to/1PNrxBt

Ebay:

1x TP4056: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Micro USB Breakout: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Toggle Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x XL6009 Boost Converter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 5mm Red LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x 5mm Green LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?..

1x 2.2kΩ Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Female USB Port: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Aliexpress:

1x TP4056: http://s.click.aliexpress.com/e/bYFYV7imu

1x Micro USB Breakout: http://s.click.aliexpress.com/e/B66yb2vju

1x Toggle Switch: http://s.click.aliexpress.com/e/AEEY7EyfQ

1x XL6009 Boost Converter: http://s.click.aliexpress.com/e/vbi6YvRzR

1x 5mm Red LED: http://s.click.aliexpress.com/e/ByJ2rzrbE

2x 5mm Green LED: http://s.click.aliexpress.com/e/vRfUzjeU7

1x 2.2kΩ Resistor: http://s.click.aliexpress.com/e/vFqzvVNna

1x Female USB Port: http://s.click.aliexpress.com/e/YnUFiyfqz

Step 3: Time for the Wiring!

Here you can find pictures on how my wiring looks like. Simply recreate it inside your case and everything should work just fine.

Step 4: Success!

You did it. You just converted an old useless laptop battery into a power bank.


Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

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Comments

author
NicolásL85 (author)2017-08-07

Hello. I made the connections like this (tested 5V at output), and my cellphone wont turn on after that (it died basically). I suspect there was current overflow. Any ideas if I definitely lost my phone? Is it worth to buy another battery or any other component that might have burned?

author
jmbradbrook (author)2017-06-20

Hi, just wondering if the TP4065 is supposed to get hot when charging batteries, the red led lights but I unplugged it when it started getting hot. I am using 13mm² wire and genuine Samsung 2600mAh 18650 lithium cell. Thank you.

author
jmbradbrook (author)jmbradbrook2017-06-20

Oh, I am also using 3 of these cells in parallel, which were also in parallel in the laptop I salvaged them from.

author
shivakumar1995 (author)2017-04-08

I made it and it works well. but i want to know how i can draw more current out of it to charge it faster.?

author
Umarw2 (author)shivakumar19952017-05-25

where you get the case?

author
arturo.briceno.148 (author)2017-05-10

Hi, how long does it take to have the full charge?

author
jbsps6 (author)2017-05-06

Can I add multiple USB ports?

author
IvanŠ187 (author)2016-10-18

Coud i use my old tablet battery it has 3.7v and 4800mAh?

author
GreatScottLab (author)IvanŠ1872016-10-19

Sure

author

Bro how many amps does it give as output to mobile phone ?

author
IvanŠ187 (author)GreatScottLab2016-10-20

Omg you answerd me

If you will read my comment again i want you to know that you are awsome and i love your videos
And thank you :D

author
AlbertZ8 made it! (author)2017-03-23

Hi,

I want to add LED's but I dont have 2.2k resistor.

I have only 220,1000 and 4700. If I add 1000 + 1000 + 220 would it approximately work like 2.2k one?

Ps. Except the LED's everything is working. Thanks Scott <3

IMG_20170323_215054.jpg
author
MRskrympy (author)AlbertZ82017-03-25

cant u just buy a 2.2k bcs that will mess up a lot of ur cables

author
LierezT (author)2016-12-12

hi,

can i use the battery while i am charging it?
i want to to make a portable Bluetooth speaker with an old speaker i have and i want to add this battery to power it up.

thank you
lierez.

author
LierezT (author)LierezT2016-12-12

and another question:

does the xl6009 boost converter can make it to output about 12 volts?
my bluetooth amp is TDA7492P and it works with 8~24 volts.

i will pass the usb out port and connect the battery straight to the amp.

thanks again

author

Yes, the booster can output 12 volts

author

Hi,

There is some circuit like the TP4056 that can handle 12v?

author

thank you!

author
Lachlan40 (author)2017-02-03

Also if I added a solar to charge it could i just wire it into the batteries.

author
Lachlan40 (author)2017-02-03

Hi Scott I was wondering before I made this if I can recharge the batteries and if I can how so.

author
КО РЕЧИК (author)2017-01-15

hi from where i can find this box sorry for my bad english

author
HM1522 (author)2016-02-17

My charger doesnt have the out terminals, it only has the input and bat terminals. What to do?

author

Buy the latest version taht looks like this: https://goo.gl/OotPh6

author
cole_hall_ (author)2016-12-14

hey GreatScottLab what gauge wire did you use?

author
ddaemi (author)2016-12-10

Hey!

How would i go about charging the laptop battery as is, because the one i have has the right properties for my project but i don't want to put it in the laptop every time i need to charge. What can i do?

author
Bahno (author)2016-11-24

And sorry for my English...

author
Bahno (author)2016-11-24

I have got battery from laptop, and this battery is: SF US18650GR

T G5149OD06J.

I can´t find the informations of this battery. Where I can to find it?

I don´t know, if this battery from laptop acer is somewhere...

Thank you!

author
Youngtinker0713 (author)2016-11-12

Hello i was woundering where the case came from thanks. (Sorry if this question is dumb but im new at this)

author
yosuko (author)2016-06-02

I have one question regarding the power bank what if the phone is fully charged and still the phone getting power won't it damage the phone.

author
aschoots (author)yosuko2016-09-17

No, if you leave your phone in the wall socket when it's charged it won't be damaged either, and phones also have protection circuits

author
aquamammal (author)2016-09-16

Hi, are you using 2.2 kohm resistor?? Isn't the band color red red red? Why is your resistor different?

author
serwsqu (author)2016-09-03

Hi, i made this project. But i have little problem , charging port gives only 0.5A , how can i boost it ? If i can .

author
Andajus (author)2016-08-15

Hey, good work! But still I can't figure out why do You use usb break out board while there is the same usb connector on the charging board... Why is that?

author
FlorianF14 (author)Andajus2016-08-15

Hey !

Some charging board are mini usb and not micro usb, if you want to use your phone charger to charge the power bank you will have to add a usb breakout :D

author
Andajus (author)FlorianF142016-08-16

So IT isn't the same connectors... Thanks, I didn't notice :D

author
LigerBlue (author)2016-06-24

Great video , I do have a question although. I have a 11.4v 3780 battery pack scavenged from a dead laptop ( motherboard fried due to liquid spill on keyboard). These are the flat batteries we see in cell phones. A battery like this should be fine for this circuit or should I be adjusting anything? I will be adjusting the boost converter to put out 5v

DS1651_1.jpg
author

that should be fine, it won't be able to give as many charges since yours is only 3780mAh but it should still work

author
LinasG3 (author)2016-08-08

Can you use bateries bought by one in series for this project?

author
KeystoneScience (author)LinasG32016-08-14

yes, however in series would not let it be able to supply as much current, and since we are only going for 5v there isn't much insentive I would say ( unless you want to skip having a boost dc converter ) but as long as you don't get do much voltage everything should be fine!

author
SamC161 (author)2016-08-06

Hello Scott, a great fan of yours, but I was wondering if there is any way to transform any of this current into higher / lower values, and if you could tell me how, / direct me to something that tells me how to. Thanks again, and great job keeping up with everybody on instructables btw

author
KeystoneScience (author)SamC1612016-08-14

sorry, I'm not the great Scott :D but I may be able to help you. First off, normally on the boost converter where he changes it to 5v there is a pin usually where you can adjust the current you desire, however even if yours does not have this, you can always attach a potentiometer to the output of the boost converter, and using the potentiometer the current will change based on what you set it to

Hope it help!

-Nate

author
sreeci (author)2016-03-23

Hello Scot,

Once again thank you for all your fantastic projects, especially your descriptive descriptions on every aspect, every theory, turn by turn.

Regarding the Laptop PowerBank:-

Some engineers, remarked that the PowerBank did not charge Apple devices, viz: iPhone/iPad mini etc.

Some commented to add 2X10K on Data lines.

i did not see a response from your side. Perhaps, you must be busy with ever so many projects in your agenda and your mind. That's appreciable.

When you get a little bit of time, please explain elaborately, as to how the above issue can be overcome.

Thanks once again.

author
GreatScottLab (author)sreeci2016-03-24

Simply short the data pins of the USB socket to activate fast charging.

author
HoracioM5 (author)GreatScottLab2016-07-23

Great Scott how do I do that ?

author
yosuko (author)GreatScottLab2016-05-28

yes Scott I tried it but it doesn't work

author
sreeci (author)GreatScottLab2016-04-03

Danke schön.

author
HoracioM5 (author)2016-07-23

Hello Great Scott , I have two questions about the poerbank.

Can but two USB output ports

My second question is if it possible to make one USB output 2.1A

author
yosuko (author)2016-06-03

I even shorted the data pins of the USB but still can't charging Apple devices

author
AfriBoer (author)yosuko2016-06-15

Hi, Yosuko some Apple devices needs to 2 volts on each of the data pins to charge.

author
SamK97 (author)2016-06-14

could you charge 2 phones by adding another usb port?

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