The 12V outputs are especially useful for camping fridges, heated blankets, fans, and other DC gear. Extra barrel ports make it possible to run more than one 12V device.
Pros: rated output, output stability
Cons: over-voltage protection, cold-weather performance
The 12V connections are genuinely useful for fridges, pumps, inflators, and vehicle accessories, especially when paired with the higher-current output.
Pros: surge capacity, voltage regulation
Cons: water resistance, ventilation requirements
The lack of a built-in 12V car socket is a recurring complaint because an SDC adapter is required for common fridges and camping gear.
Pros: rated output, peak output
Cons: startup reliability, full-load noise
The 240D omits a car-style 12V output, which is a real drawback for portable fridges and other vehicle accessories. USB-only users may not miss it.
Pros: power output, rated output
Cons: AC outlet count, repairability