DIY project
Here is how I made my own USB adapter / USB charger for my Bosch Green (18V) battery
3D drawing:
https://www.thingiverse.com/thing:302...
3D Printing info:
Material: PETG
Infill 40%
Color: Gray
Finish: Standard
USB Parts:
6-24V to 5V 3A USB Charger Module DC step down Converter power supply module
https://www.aliexpress.com/item/32815...