can
airpods charging bin can be interused, this has no impact, after all, airpods charging bin is only a charging and storage earphones exist, even if not the original can be charged AirPods second generation charging bin can charge two generation earphones, and conversely, the generation of charging bin can also charge two generation of earphones. The only thing you can't do is mix the first and second generation headphones. The Apple store has a single wireless charging bay that can match the first and second generation headphones. The matching method is wired or wireless charging for more than 30 minutes, and the headset and charging bin will automatically complete the matching.
Not universal! Neither the AirPods Pro2 charging case nor the headphone case are universal. AirPods Pro generation and the second generation of the charging bin has been upgraded, the second generation of the charging bin has added the speaker has the rope hole, so the protective case is not universal. Secondly, the charging bin can not be mixed. The charging contacts of the two generations are different! For reference only
Can not be universal, headset size is a little different