My right AirPods struck at 80%,can’t fully charge & after 3 hours use still show 80%.I reset few times or clean ,can’t fix it .Anyone can help?

Thanks but it not works.My AirPods case & the left AirPods can fully charge to 100% ,only the right AirPods has problem, now it struck at 78%. Maybe I have go to the Apple store to repair.It only two months old.I pay AUD$249 for it ,it is not a cheap replica; I really disappointed for the quality.😑