Bests & Worsts Reviews from Amazon

The battery was advertised as a 30800mA battery. There was a sticker on the back of the box which I peeled off revealing 26800mAh. The actual battery does say 30800 so am not sure what to believe. The box had also been opened prior to receiving it so I'm not sure I received a new product or one that someone else had returned. I do not have equipment to actually test the battery bank. I am charging the battery to see if it lives up to the claim of charging in 3.5 hours. EDIT 6/3: I have since returned the item - took close to 7 hrs to charge.