In this project I will show you how to combine common 18650 Li-Ion batteries in order to create a battery pack that features a higher voltage, a bigger capacity and most importantly useful safety measures. These can prevent an overcharge, overdischarge and even a short circuit of the batteries. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to make your own Li-Ion battery pack. In the next steps though, I will present you additional, helpful information.

Step 2: Order the Parts!

Here you can find a parts list with example sellers for your convenience.

Ebay:

6x INR18650-25R Li-Ion Battery (USA): http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

6x INR18650-25R Li-Ion Battery (Germany): http://rover.ebay.com/rover/1/707-53477-19255-0/1?...

6x 18650 Spacer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Nickel Ribbon (5mm, 0.15mm): http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x XT60 Connector: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 3S Balance Connector: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 3S BMS: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Kapton Tape: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

16 AWG Wire: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Aliexpress:

6x INR18650-25R Li-Ion Battery:https://s.click.aliexpress.com/e/_dY2Dqpb

6x 18650 Spacer: https://s.click.aliexpress.com/e/_dVZZNeh

Nickel Ribbon (8mm, 0.15mm): https://s.click.aliexpress.com/e/_d6k3sXr

1x XT60 Connector: https://s.click.aliexpress.com/e/_d7rt0sn

1x 3S Balance Connector: https://s.click.aliexpress.com/e/_dXmrveX

1x 3S BMS: https://s.click.aliexpress.com/e/_d7mf7gj

Kapton Tape: https://s.click.aliexpress.com/e/_d9EKNqf

16 AWG Wire: https://s.click.aliexpress.com/e/_dXLZD6f

Amazon.de:

6x INR18650-25R Li-Ion Battery: http://amzn.to/2lbEhUE

6x 18650 Spacer: http://amzn.to/2lc3e2A

Nickel Ribbon (8mm, 0.1mm): http://amzn.to/2lbP2Gv

1x XT60 Connector: http://amzn.to/2lbVsGx

1x 3S Balance Connector: http://amzn.to/2lc1O89

1x 3S BMS: http://amzn.to/2lc3FtK

Kapton Tape: http://amzn.to/2lbVxu2

16 AWG Wire: http://amzn.to/2lbXd5S

Step 3: Do the Wiring!

Now that you have all the required components, it is time to do the wiring. You can use the pictures of my finished battery pack and the scheme from the video as a reference.