Cordless battery inflator or 12V plug-in: which is better?

It depends on use. Cordless battery units (often 20V tool-platform or built-in lithium) are more convenient for roadside and bike use, while 12V DC plug-in inflators like the AstroAI AIRUN H trade portability for never running out of charge. For occasional top-offs, verified-purchase reviewers favor cordless; for sustained inflation of larger tires, plug-in or high-duty-cycle units are cited as more reliable.