Battery charging on macbook air is erratic
Not sure what the "True" problem is but I can charge my MacBook Air 1 out of 100 times, purchased a new adapter, to no avail, is it the battery or the module that controls the charging?
MacBook Air
Question marked as
If your MacBook Air has Intel Processor, resetting SMC could solve the problem.
How to reset the SMC of your Mac - Apple Support
If it doesn't help, try to check your MacBook Air with Apple Diagnostics if it reports battery or charger related error.
Use Apple Diagnostics to test your Mac - Apple Support
Apple Diagnostics reference codes - Apple Support