Powerost High Performance Laptop Battery for Asus X550 A41-X550 A41-X550A F550 K550 A550 F552 K450 P450 P550 R409 R510 X452 Series [Li-ion 4-Cell 15V 2950mAh/44Wh]

used for laptop computer. There are only 4 cells in series in this battery due to small size allowed by computer case so the battery life is not very long. My daughter has a Toshiba laptop that has 9 cells in the battery (3 parallel circuits of 3-in-series), but it is also a bigger battery case. Next time I buy a laptop I will look at the size of the battery.

Works like a charm. Holds a good charge, even when I'm gaming or on zoom.

My ASUS laptop battery died and it had to always be plugged in. This battery works perfect and as described, and it has a longer life than my original battery. I am very glad I bought it.

I bought this battery for someone else's laptop. From my limited time using it, it seemed to hold up a charge just fine. I haven't heard any complaints from the user about it.

Battery failed at 2 1/2 months. Doesn't hold charge for long and once it hits "plug in" with 15% remaining, it literally dies within a minute.

Battery came very quickly, worked very good, very pleased.

Battery provides at least 2 Hrs. on light usage, fully recommended.

This battery should give us a few more years of use on a laptop. It arrived quickly, was well-packaged and easy to install. My only regret is that I wish that I’d bought it sooner!