From 3 Batteries to a Real Power Supply | DIY XL4015 Project
Автор: DIY-ary
Загружено: 2025-12-22
Просмотров: 136
In this video, I built a rechargeable DC power supply using only three 18650 lithium batteries.
The system is based on:
A 3S BMS for battery protection
An XL4015 DC-DC buck converter (CV/CC)
A digital volt/amp meter
5V USB output for charging smartphones
12V output for LEDs and electronics
This DIY power supply can light 12V LEDs, charge a smartphone at 5V, and demonstrate how voltage and current regulation works using CV/CC mode.
If you like DIY electronics, power supplies, and battery projects, don’t forget to like, subscribe, and comment!
📌 Components used:
3×18650 Li-ion batteries (3S)
BMS 3S
XL4015 buck converter
Digital V/A meter
Thanks for watching!
⚠️ Safety note: Lithium batteries can be dangerous if misused. Always use a BMS and respect voltage/current limits.
If you enjoy DIY electronics, power supplies, and battery projects, don’t forget to like, share, and subscribe!
#DIYElectronics #PowerSupply #18650 #XL4015 #Makers #BatteryPack #Electronics
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