These are not new but pulled from phones. The contacts have marks as if they have been inserted. Both batteries were charged to 100% and put them away as backups. I needed one of them and it would not turn the phone on. Plugged it into the charger and had 75% charge and won;t boot the phone. The other worked at the same charge level no problem so far.
I recently broke my charging port on my phone so in order to charge it, I had to purchase an extra battery and a desktop charger. I was very pleased with the low price of this product. The battery works perfectly fine; the only negative thing is that it drains just slightly faster than my original. It's not a huge deal, but I did notice it. The battery still lasts me all day with medium usage. Great product, especially for the price!
I ordered two of the batteries for my Samsung Note II. However, only one of which worked. Very disappointed. I left the suspected bad battery plugged in for 10 hours and it wouldn't take a charge. The other good one was working well after only 3 hours of charge time. Both batteries were inexpensive in comparison to what the big box stores or cell phone providers would charge, so it wasn't an big lost. I guess you get what you pay for.