I do not sell batteries ...but look at green cell on https://www.ebay.com/itm/325417297797 for your HP 14

I've used green cell's replacement battery for my old Sony laptop for a couple of years now and ... I am very satisfied with it.

I would like to add some point:
Simultaneously battery-charging whilst using the device: been safely doing this for years with laptops. Reliable electronics at work, but phones have limited space. Hopefully, not too compromising. Battery status is only an assessment. Demands very accurate monitoring during charging and discharging. Found only in quality products with quality design.
Battery life: Batteries die due to chemical deterioration of its anode. This is minimised when the battery is maintained at full charge. This has been for years in our cars with modern day alternator etc+electronics. Working a charge/discharge cycle between 80% to 100% capacity can many times increase the life cyle figure. As in electric-cars Lithium cell voltage is 3.6v. Phones are 4.0 to 4.2 to increase capacity but shortens its life if at 3.6v
Water: Lithium is reactive in water like but less than Sodium. Plunge in big bucket of water for a small battery. Problem becomes contaminated water. Please! NOT in sewer or land drain!!