UPDATE 2: Hello everyone, yet again.. In writing this update to let you all know how the battery situation played out. If you've read the first update you know I had issues with the first two of the four batteries I ordered. (The first want holding a charge & the second had the black cable not connected to the battery.) I contacted the seller through Amazon. They apologized & are shipping replacements at their cost. While the replacements haven't arrived yet, I decided to try soldering the black wire to battery #2 mysel. Not only was it successful but it works like it should & is now powering my second controller. With that success I decided to tear open battery #1 to see if I could determine what was causing it to not charge. Right away it was plainly visible that this battery also didn't have its black wire soldered to a connection point. I soldered it in place & tested.. Works great too!! I haven't opened battery #4 as 3 out of 4 are working perfectly. I contacted the company to tell them they don't need to send replacements but they'd already shipped.
So, in summary, while the batteries may need minor soldering to connect a lead, the 3 tested all hold a charge as advertised & are working flawlessly in the DS4's as replacements. If anyone has any questions please feel free to post them here or email me directly at: gamerdenied@gmail.com