some lottery

Of the 2 batteries, one gives me the same autonomy as the original battery that I wanted to replace, so for gain, the other is better
with a gain of 15 to 20%
From my experience and given the reviews I feel it's a little lottery.
PRECISION: Following my review, I was contacted by the customer service of the company that offered me AnkerDirect an exchange or refund defective battery, so I was refunded promptly. So hats off to this very professional company listens to its customers.