Why my Hp envy 13-d009nl is running slower and slower?

If you noticed your Hp envy 13-d009nl is running slow, you may need to have a double check. We checked official manual, here is what they suggested: perform regular maintenance to enhance the performance of your computer. Use the tools in this section to optimize your PC, clean up junk files, control when applications run, adjust how your computer uses memory resources, and reduce heat inside your computer.

Here is what you need to know before replacing a hp envy 13-d009nl 11.4V 3950mAh laptop battery, and we have stock of it.

Price: N$106.44 (Including taxes)
Voltage: 11.4V
Capacity: 3950mAh (45Wh)
Battery cells: 6-cell
Chemical: Li-ion
Battery Color: black
Condition: new original battery
Warranty: 12 months