After at least 23 hours, the charger case is down to 95% and the Airpods are still 100%. 5% in a single day can be considered too much?
I'll now fully charge both and let the Airpods out of the case, without being used, to see what happens.
Update: Airpods not being used, in my drawer, 100% charged since 1:45 PM (May 5). Now we will see how much they are going to last.
5:30 PM, same day - the iPAD says the battery from the Airpods is down to 85%. Still a loss of 4-5% each hour.
Important:
https://www.reddit.com/r/apple/comments/5jcvxx/does_anyone_elses_airpods_lose_charge_overnight/
Perhaps 3 full discharges are needed for this test...
Update, May 9: Still waiting for the 2nd full discharge. I'll also measure how much time it takes to fully charge them and the case.
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1st test concluded: after a full discharge (my 2nd) for both the Airpods and their case, in exactly 90 minutes I see these figures after opening the charger case: 100% for the Airpods and 91% for the case. So it takes more than that to fully charge them.
Note: after 2 hours it's 100 and 99%, however at this point the LED is already green, not amber. That must mean it's fully charged.
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Once I have a 3rd full discharge I'll do two more tests: how much the battery is drained in 24 hours with the Pods inside the case without being used, to measure the case standby battery life, and how much the Pods themselves drain if outside the case, if left alone in my drawer.