I ordered a 4000mA battery, checking the weight, I found that it is 644grams, which corresponds to 3000mA. The 4000mA battery should weigh 800 grams as described. I initiated a dispute, the seller unconditionally returned 12 euros.
All welded as ordered, even corrected me, me who had holded, in my own hands the original and did not notice the nuances , it is very commendable.The capacity is certainly not 4000 or even 3000, i hope ,that they have about 2000, because they are much heavier than the originals wich are at 1200mA. In general, I am satisfied with the purchase ... I can recommend it.