Panasonic ToughBook CF-54 14-inch Core i5-5300U - SSD 256 GB - 16GB AZERTY - French

I tested the Panasonic cf 54 mk1 that you sent me. At first I felt satisfied with my purchase. But after a few hours and days of use, I noticed that the battery was in serious trouble. You amaze me!!? 14 Thousand hours of work for it. That's too much, far too much! Poor thing, it won't last 1 hour straight without mains power. For my expectations, that's not possible. I went from 100% battery life to 10% in just 1 hour of low-power viewing. So it's no good. Thanks for the experience but I would like a return and my insurance refunded. Thanks backmarket. But the battery is dead Sincerely