Can Huawei freebuds2pro wireless headset charging box be charged on the basis of 15W wireless fast charging? Will it be damaged?

You can try.

It seems to be rechargeable, indicating compatibility. Will not break.

When the wireless charging base detects that the incompatible equipment is misplaced as a foreign object, it will automatically protect it from output. The compatible charging box can be charged.

Because the battery capacity is small, 4 10mAh, the charging power is too small, and the wireless charging base is hot.