A compatible battery long overdue

I was looking for very many months a battery for my D5100. Walking through the products offered on Amazon, I realized that Nikon had a chip inserted into their battery and programmed their cases a software recognition of that battery, forcing consumers to buy (expensive) batteries EN-EL 14 !
A further EUR 50 piece, I was resigned to not buy a second battery despite several failures by charging oblivion ...

It is by chance that I came across this merchant indicating that its battery is equipped with chip recognition "comptabible Nikon."
I was put at ease because I found that Patona produces a wide range of batteries, and in the worst case, I would return the product in case of incompatibility.
After ordering, receiving and testing, the verdict: it is compatible with my Nikon D5100!
Technical characteriscs are similar to Nikon EN EL14 except she does 7,6Wh (compared to the Nikon 7.7Wh).

Side presentation, the battery is supplied in a small white box and shipped in a padded envelope. No frills like 200g cardboard and "how to" unnecessary to the original battery.

As for me, I am more than happy.
For those who were disappointed battery EN-EL 14 non-compatible (no chip), I think this will satisfy battery