There is a great possibility, because the lithium battery capacity in the Bluetooth headset will not be very large, the use of time will not be too long, you need to charge repeatedly, and the charging damage to the battery is relatively large, and you have used two years, the battery life should be almost the end, and you also mentioned that the back can be intermittent charging, so there is a great possibility that the battery is broken. Go to the repair shop for a replacement, it doesn't cost much, but if you know someone well, you can get it for 10 yuan.