A battery performance very close to those of the manufacturer cheaply.

After a cycle of ten charge / discharge almost complete, I can EMMETRE a first opinion on this farm.
Compared to that of the manufacturer, its autonomy is about 2.5% lower but is resistant to intensive use.
Given the price difference between the two batteries, there is no picture on the product to be able to acquire a bearing.

I put only four stars because finishing and a bit below that of origin and the plastic seems a less solid nothing, it is also quite cheap packaging deplore, however you are entitled to a protective cover which n is not often the case with Annex brand products.

In short a product that I highly recommend!