Here is another "What is in the Envelope/Box?" Once again a few electronic components/modules for a future project requested by my son to be use during loadshedding in the house. All the components will be used for a DIY WiFi Router UPS with 8 hours of battery backup.
Components:
1 x XL4015 Module Converter
3 x 1000 uF Caps
8 x 1N5822 Diodes
2 x IRF9540
4 x 18650 Battery Holders
1 x 3S Battery Management System (BMS)
2 x 4N25 Opto Isolators