About 4 times
airpods charging bin can generally charge headphones for about 4 times, so you can go out with airpods for a day, but if you frequently put in airpods, the power will certainly not be so durable, and the use of mobile phones and do not use mobile phone power consumption.
The headphone battery capacity is 2×158mWh, the charging box capacity is 1.98Wh, and the charging times are less than 5 times.
According to the official statement, it can be filled 3 or 4 times