TIA for all info.

Regarding the M2 2022 MacBook Air - I understand it has a MagSafe 3 port and two USB-C ports. If all I have is a double-sided USB-C cable, can those two USB-C ports accept charging if I plug a charger+USB-C into it? Or is charging the laptop thorugh the MagSafe 3 port the only option instead of an additional one. Google search etc was ambivalent, in all results it wasn’t clear to me if those usb-c ports could be used only to charge other devices from the laptop battery of if they can also be used to charge it.

I've had my M3 Macbook air for about six months now and for 99.99% of the time it is plugged in except for the occasional unintended un-plugging. I use a genuine Apple USB-C to USB-C cable plugged into a genuine Apple 140W Apple Power adapter. Despite the always pugged-in mode, I'm up now to 64 battery cycles and 98% battery health. Last month I was at 43 cycles/100 Health and hadn't used the MBA once in between.

I don't think my battery has ever discharged more than 10-20% 2-3 times since I got it. I know many comment here not to pay much attention to battery cycles since the battery is a consumable, but it is concerning that the battery health has degraded and the battery cycle count is so high despite it being plugged in nearly 100% of the time.

My question is whether in anyone's experience, is it better to use the original Mag safe usb-c cable rather than a usb-c to usb-c cable to keep the MBA charged? Does using the 140W charger as opposed to the original charger make a difference as a effects battery health?

Reason I'm concerned is that I usually upgrade each time a new model with an upgraded processor comes out, and I do re-sell my old unit and want to get the best possible price for my used unit when I sell it. One of the first questions buyers always ask is how many battery cycles and battery health status. I pretty much used my M2 Macbook Air the same way and ended up with a ridiculous 113 cycles even though it never left me desk once. Battery health was 95%. It was less than a year old at the time.

Any thoughts appreciated.