Are you buying these directly from Dell or a 3rd party? Sometimes the system might not recognize the battery correctly if it doesn't match up/ have very similar specs to the official Dell one. Do you still have the old battery you replaced? I would recommend trying it just to see if the old battery is even recognized. If it isn't there might be something wrong with the board, but if it is... then the batteries are possibly faulty, however it is odd that 2 wouldn't work.

Let me know if you can test the old battery and how that turns out (if you can). Then I can see if there is anything else we can try. I don't normally work on these system models but am very familiar with laptops etc. 

Best regards, 

Brad

Thanks for the answer!

Yes, I still have the old battery and it is recognized.

I bought the battery from a 3rd party. The battery itself says its Dell's original. I will check with the seller.

Hi Agsel, 

That sounds like the best choice (to contact them), since the old battery is recognized correctly there is a good chance there is a fault with them, and not the board which is great news.

Best regards,

Brad