Introduction: DIY Lithium LiFePo4 12v 18 Amp Battery
Hey! everyone My name is Steve
Today I’m Gonna show how I build this 12V 4S3P LiFePo4 Battery Pack With BMS and Balance Charging
Let's Start
Step 1: Features
Total Output Power
- 18000 mAh @ 12.8V
Input Power " Charging "
- 9000 mAh Constant Current
- 14.6v Constant Voltage
Built-in Protection
- Over Load Protection
- Short Circuit Protection
- Over Heat Protection
- Low Voltage Protection
- Over Voltage Protection
- Cell Balancing
Note - Please see the images for better understanding
Step 2: Thing I've Used
LCSC
- XT60 Female - http://bit.ly/2I8J7jn
Banggood
- 32650 Battery -
- 32650 Holder - https://ban.ggood.vip/SSXb
- BMS -
- XT60 Connectors - https://ban.ggood.vip/SSXb
- Kapton Tape - https://ban.ggood.vip/SSXb
- Nickel-Plated Steel Strip - https://ban.ggood.vip/SSXb
- SUNKKO 787A+ Spot Welder - https://ban.ggood.vip/SSXb
- BMS Silicone Wire - https://ban.ggood.vip/SSXb
- Black Silicone Wire Cable - https://ban.ggood.vip/SSXb
- Red Silicone Wire Cable - https://ban.ggood.vip/SSXb
Amazon
- 32650 Battery -
- 32650 Holder - https://amzn.to/2unclYj
- BMS -
- XT60 Connectors - https://amzn.to/2unclYj
- Kapton Tape - https://amzn.to/2unclYj
- Nickel-Plated Steel Strip - https://amzn.to/2unclYj
- SUNKKO 787A+ Spot Welder - https://amzn.to/2unclYj
- BMS Silicone Wire - https://amzn.to/2unclYj
- Black Silicone Wire Cable - https://amzn.to/2unclYj
- Red Silicone Wire Cable - https://amzn.to/2unclYj
Aliexpress
- 32650 Battery - http://bit.ly/31tlScB
- 32650 Holder - http://bit.ly/31tlScB
- BMS - http://bit.ly/31tlScB
- XT60 Connectors - http://bit.ly/31tlScB
- Kapton Tape - http://bit.ly/31tlScB
- Nickel-Plated Steel Strip - http://bit.ly/31tlScB 7
- SUNKKO 787A+ Spot Welder - http://bit.ly/31tlScB
- BMS Silicone Wire -
- Black Silicone Wire Cable - http://bit.ly/31tlScB
- Red Silicone Wire Cable - http://bit.ly/31tlScB
Note - Please see the images for better understanding
Step 3: LiFePo4 Battery
These are really high-quality FBTech 32650 Cells this cells can easily get you 2000-2500 Cycles these are rated for 3C I’ve Personally Capacity Tested these cells and the result 100% what they are Rated for and I got 6000mAh
I love this Chemistry LiFePo4
Note - Please see the images for better understanding
Step 4: Sponsor
Today's Article is Sponsored by lcsc.com
They are the Largest Electronics Components Supplier From China Ready to Ship within 4 Hours and they ship World Wide
Step 5: Wiring Diagram
Note - Please see the images for better understanding
Step 6: Assembly
- Make sure all the batteries are at the same voltage and same capacity
- Now Assemble the holders
- Now put one by one cell into the battery holders
- Now use Kapton tape to tape it all
Kapton Tape - it is used to avoid the heat basically it is a heat resistance tape
Note - Please see the images for better understanding
Step 7: Welding
For Welding, I Used Spot Welder don't use soldering Iron It may damage your battery
- Now cut down the Nickle plated strip tape at the Right Length
- First, make a pair of 3 parallel battery as shown in the picture
- and then connect all the 4 pair in series
- This connection is called 4S 3P
- You can also see the connection diagram above
4S - Stands for 4 Series
3P - Stands for 3 Parallel
Note - Please see the images for better understanding
Step 8: Battery Management System
To insulate the BMS From Battery I used 2-3 layer of Kapton Tape and Dual Sided tape
Note - Please see the images for better understanding
Step 9: BMS Wiring
I used 22 AWG Silicone wire and cut it to the right length and soldered wire according to Wiring Diagram and used XT60 As Output
Note - Please see the images for better understanding
Step 10: Finished
The Battery Has Been Finished I used a 55 Watt Car Headlight Bulb H4 to Test It and it Glows Very Bright
That's all for today guys!
You Just Made It
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