Be carefull with 2000mah batteries. I’m talking about V2 Dualshock 4. The original battery : 54mm x 35mm x 8,5 mm and 24g with the hardcase. In this space, you can’t have a 2000mah. Check the size of a true 2000mah 3,7v cell, and you will see a really bigger size. So, these replacement batteries with the same look as the original one, are fake ! If they work, because many are dead and don’t work at all, you will never have 2000mah. I found a true new 3,7v li-ion cell on Ebay, that fits perfectly, but it’s a 1500mah, and without a hardcase. I had to weld the original connector, but it fits perfectly. Not any voltage problem. So, if you need a new battery, don’t bought any hardcase version, and check the dimensions and weight.