The battery, after almost a month of use, has a respectable duration, so you can use the phone for almost a day with simple use. However, when it drops below 20%, the power saving feature does not work, as it is not genuine, so the device behaves strangely many times, it does not have the expected response and it can shut down unexpectedly! Nevertheless, for its price, it is very honest. I would buy it again.

I bought this battery in August and it's terrible. From the first day, it loses about 40% of its charge in 8 hours. I had two batteries and it's not worth it. Get the 2200 one because this one is really awful

I had bought it a year ago and it didn't turn out good. I got it from eBay for 14 €. The capacity of 2200 is very good

I have bought a much better one. It's a matter of luck, I believe. It doesn't even last a day, and I only had it for calls.

I have purchased this product twice. The first time it had the Apple logo on it and it turned out good. The battery life was very good (like new). The second time (current) the battery life is poor. It is at the same level as the one I have been using for 1.5 years now. The store you order it from plays a role. In one store it may turn out good, in another bad. Hence the rating.

Very good capacity, but it does not align with the new feature of iOS 11, which is capacity control. Otherwise, the price-value relationship is excellent