DC adapter cable: 3.8/1.3 mm or 3.5/1.1 mm to 5.5/2.1 mm
This handy DC adapter cable (3.8/1.3 mm or 3.5/1.1 mm to 5.5/2.1 mm) allows you to connect the 6V 2W solar panel to the universal charger for Li-Ion/LiPo batteries!
This DC cable features the standard DC plug, meaning the cable has an internal diameter of 2.1 mm and an external diameter of 5.5 mm. You can therefore use this adapter cable for any other device that has a DC jack with an internal diameter of 1.1 or 1.3 mm and an external diameter of 3.5–3.8 mm. As the adapter is fitted with small flexible parts inside, it can be used with connectors with an external diameter ranging from 3.5 mm to 3.8 mm.
Please note that when connecting the adapter, you will need to apply a little more force than expected. Also, remember to always check the polarity.
Technical details:
- Cable length (end-to-end): ~165 mm / 6.5″
- DC Jack Adapter Cable Datasheet
Adafruit name: 3.8 / 1.3mm or 3.5 / 1.1mm to 5.5 / 2.1mm DC Jack Adapter Cable [ADA2788]

























David B… (verified owner) –
Accessorio indispensabile se si vuole utilizzare il pannello solare Adafruit.
Attenzione se si usa il pannello: all’inizio bisogna fare un po’ di forza per infilare lo spinoto, dopidiché non ci sono più difficoltà.