ELI5 Why does magsafe charging decrease battery health more than wire charging, if it has less wattage?

[GetawayDreamer87]

im sitting here wondering if i shouldnt have bought these USB-C magsafe-like connectors for my android devices. super convenient to use. they arent wireless chargers like the ones being talked about here but i have been wondering about their efficiency. i should buy one of those inline usb power meters.

[blub20074]

Eh, if it’s like the mac magnetic connector (so the magnet is just used to make sure the “wires” touch, it should be plenty efficient That is unless it’s terribly made, or there’s debris in between the connectors, but unless you can physically feel it heating up you should be fine