Make Your Own 4S Lithium Battery Pack

Hey! everyone My name is Steve.

Today I'm going to show you How to Make 4S 2P lithium Battery Pack

Click Here to See The Video

Let's Start

Step 1: Gallery

Step 2: Features

Output Power

• 5200 mAh @ 16.8V

Input Power " Charging "

• 2000 mAh Constant Current
• 16.8v Constant Voltage

Built-in Protection

• Over Load Protection
• Short Circuit Protection
• Over Heat Protection

Step 3: Things You Need

Recommended Products

• SUNKKO 787A+ Spot Welder - 1. https://goo.gl/WnYrRG

2. https://amzn.to/2yr81bX

• NCR18650B 3400mAH Li-ion Battery - https://goo.gl/fTyde8

Where To Buy "Cheapest"

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Banggood

1. Connector Holder - https://goo.gl/Cyk76V

2. XT60 Connectors - https://goo.gl/Tm4rRQ

3. SUNKKO 787A+ Spot Welder - https://amzn.to/2yr81bX

4. 18650 Battery Pack Spacer - https://goo.gl/ba67t6

5. Nickel Plated Steel Strip - https://goo.gl/GgpGdq

6. Battery Protection board BMS - https://goo.gl/zcgqBJ

7. Black Silicone Wire Cable - https://goo.gl/bMmPid

8. Red Silicone Wire Cable - https://goo.gl/qMCbD7

9. Kapton Tape - https://goo.gl/KPagVx

10. Mustool® MT223 60W Soldering Iron - https://goo.gl/iH7d5C

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Amazon

1. Connector Holder - https://goo.gl/Cyk76V

2. XT60 Connectors - http://amzn.to/2gShZaJ

3. SUNKKO 787A+ Spot Welder - https://amzn.to/2M93P2b

4. 18650 Battery Pack Spacer - https://amzn.to/2M8HSka

5. Nickel Plated Steel Strip - https://amzn.to/2yqNuE3

6. Battery Protection board BMS - https://amzn.to/2trNVsm

7. Black Silicone Wire Cable - https://amzn.to/2MDAsWV

8. Red Silicone Wire Cable - https://amzn.to/2MDAsWV

9. Kapton Tape - https://amzn.to/2K3piJt

10. Mustool® MT223 60W Soldering Iron - https://amzn.to/2K5NBcZ

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Aliexpress

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Step 4: Assembly

First Step

• Make sure all the batteries are at the same voltage and same capacity
• Now put one by one into the battery holder
• Now use Kapton tape to tape it all

Kapton Tape - it is used to avoid the heat basically it is a heat resistance tape

Step 5: Welding

Second Step

• Now cut down the Nikkle plated strip tape at right length "See the image"
• First, make a pair of 2 parallel battery as shown in the picture
• and then connect all the 4 pair in series
• This connection is called 4S 2P
• You can also see the connection diagram above

4S - Stands for 4 Series

2P - Stands for 2 Parallel

Step 6: Meetup

• Now use a multimeter to measure the battery voltage now I got a reading of 16.49V it may differ from mine reading is totally depends upon the charge of the battery
• Now use Kapton tape to cover the back side of the BMS with several layers
• Now use a double-sided tape to stick the BMS to the Battery

Step 7:

• Now use a soldering iron to pre-tin the solder pad
• Now connect all the pads with small wire as shown in the images
• You can also see the pictures as reference

Step 8: Favoriate T60

• I love to use XT60 everywhere
• Now I used the special holder to hold the XT60
• And used some 14AWG silicone wire and soldered on the XT60
• Now used some heat-shrink tube to secure the connection

Step 9: Final Step

• Now I soldered the XT60 wire to the BMS
• And now used a multimeter to see the battery pack is working
• It's done

Click Here to See The Video

You Just Made It Thank you for visiting my Instructables

Stay tuned for next Projects

Comments

[DarianK4]

A little confused by the wiring diagram. the picture showing the wires soldered onto the pcb is a tad blurry, and the diagram provided by banggood shows the connections for the port on the side rather than the pads.

[AltLiving]

Ive wondered the same thing myself

[MaxxB1]

How do you charge this pack?