Is there a charging adaptor available to charge the S1 Pro on a 12 volt system?
Bose S1 Pro
Australia
You can buy a 300W Pure Sine Wave Inverter, 12V DC to 240V AC in Australia for about $100 ( Jaycar Electronics or similar). This could either power the S1 via an external 12V battery or charge the internal 12V battery. The power port on the S1 is rated as 100-240V AC 150W.