Fully 3V806 Replacement Battery Compatible with Dell Alienware Echo 13 QHD Series - 14.8V 51Wh

Worked great for about a week. Fitment and specs were as expected/advertised, and laptop had no problem recognizing the new battery. Held a charge well and was a significant improvement over previous battery for the first few cycles. Then, without any warning signs/symptoms, the laptop started throwing an error during POST that the (new) battery had failed and needed to be replaced. Laptop immediately shuts down when AC power is unplugged. Attempted to reseat battery, tried charging while off for a day or two w/ two different chargers, etc. Battery is now useless despite my best efforts. Added a second star only because it seemed to work as expected upon arrival and at least I got a week's worth of good use out of it, but that's generous considering it's now a brick. Contemplating ordering another in hopes that this one was a manufacturer defect or something, but skeptical - I'll update if I have any more success on round #2

Works great so far in my Alienware 13 ANW23. No problems yet! A fresh battery has my laptop running great.It was my first time taking apart a laptop but I followed a video slowly and it worked out great.