You can charge your PandwaRF using a standard micro-USB (for version 3) or a USB C cable (version 4) connected to any USB power source, or by connecting it to a power bank.
During charging:
If the device is on, the orange LED will blink.
If the device is off, no LED will light up.
You need to fully charge your PandwaRF at least once for an accurate battery percentage display. When the battery is fully charged, the orange LED will stay on.