Convert Your Old Laptop Battery Into a Power Bank

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About: Awesome Electronics Tutorials, Projects and How To´s

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

https://www.facebook.com/greatscottlab

8 People Made This Project!

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140 Discussions

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LierezT

2 years ago

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.

5 replies
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LierezTLierezT

Reply 2 years ago

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

It can, but the current will be limited by the TP4056. With FULLY CHARGED BATTERIES you will have no more than 400mA @ 12V. When the cells are about to be empty you will only have less than 250mA. Not enough for a bluetooth speaker in any case...

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ΘοδωρήςΚ1

1 year ago

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

1 reply
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garzoΘοδωρήςΚ1

Reply 2 months ago

If you are using more than one cell in parallel you shouldn't have any current limit from the cells, then it should be the TP4056 with its 1.2A of maximum output current. 1.2A @ 3V should be converted in 0.72A @ 5V, but you have to take into the equation the efficiency of the dc converter. Afaik with these components you can't increase the output current...

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SaugandhikP

9 months ago

What if 18650 batteries got over discharged? Is there any protection circuit for under voltage protection? It will be harmful for the batteries. So what circuit should i add to get over discharging protection?!! Please help!

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narena

Question 10 months ago

Output of charger module 4056 has twp plus and Two minus. One plus and minus which is inner one is connected across batteries..while outer plus and minus is connected to boost input using switch.. Outer and inner positive connections are shorted .. is this true for inner and outer negative connections too ? Its not shorted in my module I got but both positives are shorted though .....comment

Capture.PNG
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JoseC507

Question 1 year ago on Introduction

Hello, I have an inquiry, can I replace the TP4056, and both the micro-USB breakout and female usb port with this? (refer to image) I got it from an old power bank that was lying around the house. I was wondering if I could skip it and be okay with going through hooking it up with the boost converter.

IMG_20180222_190302.jpg
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rtrzewikowski

1 year ago

Pretty cool setup and worked pretty well until a point.
Either the TP4056 or the stepup converter started acting up after the batteries drained completely and on the USB output I was getting 19V (and I was not able to adjust it anywhere below 18V)!

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HM1522

3 years ago

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

2 replies
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zapperkenHM1522

Reply 1 year ago

look for TP4056 with protection, they have 3 ICs and has two more terminals (out) adjacent to the battery terminals.

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Simon_r99

1 year ago

I have a Problem! One of the 3 pairs is ~1V lower than the other 2 (~3,33, ~4,5 & ~4,6) Can I still use all of them?

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makeosaurus

3 years ago

Could you use this to power a raspberry pi 2? What amps does it supply?

2 replies
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SonsoerGreatScottLab

Reply 1 year ago

1,2A... the max output current of the protection board is only1200mA

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NicolásL85

1 year ago

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?