At the 3rd recharge after scrupulously respected the manufacturer's protocol for the 1st charge / discharge cycles, the battery will recharge more.
After 12 hours of charging, it appears "3% available (plugged in, not charging)."
New post to ask for help to the supplier.
==> Anker very responsive, offers replacement or refund
Having finally able to recharge (by computer out before replacing it), I wait a few days to make sure it's not just a specific problem.
A few days later, the same problem occurs.
And with 3 battery analysis software, it appears that she has already lost 13.5% of its capacity (in less than 3 weeks of use, and in strict accordance with the manufacturer's instructions).
I ask if he fact that the replacement confirms that it is defective.
Less than a week later, I just got a new battery.
==> Once again, a very nice response from the manufacturer.
ANKER Congratulations !!!
It remains for me to test my new battery ...