[DIY Project] Reverse Protected 18650 Lithium-Ion Charging Unit
|File Size||66.69 KB|
|Create Date||11. Februar 2018|
|Last Updated||16. August 2018|
I started to design a simple 4in1 PCB for charging 18650 cells while looking at my actual charging rig attached to some wood!
Some time ago, i teached myself to design PCBs for hobby use. I really love PCB Design and started this little project.
Its a 4x Charger protected with a 3A diode and a 2A glass fuse.
I am using this for this porject: https://blog.seidel-philipp.de/xxl-powerhouse-diy-feldakku-aus-18650-zellen/
- 4A charging current
- mounting holes
- easy soldering
- "clean" Design
- reverse polarity protection with fuse and diode
- easy expandable (just connect them in series)
I used the cheapest components to get the lowest price possible.
Estimated costs per board including hardware:
1x PCB $4.9 (you will get 10 boards )
4x TP4056 $0.74
4x glass fuse 2A $0.11
8x glass fuse holder $0.08
4x diode (IN5402 3A 200 V, DO-41) $0.48
1x 18650 holder $0.90
calculated price: $2.8 excluding possible shipping
real price: $7.21 and you still have 9 PCBs left to build more charges and hook them up in parallel.
These was my first design, but i already changed the cables to connect them in a better way!
Outdated: This was my first design. But i changed the way, how to connect all boards together. See above!