i know amazon get one
https://www.amazon.com/Replacement-Battery-Compatible-Essential-3040MAH/dp/B07T28KL8B
i plan to order it and test
I've seen one from Amazon and it seems to be produced in 2020, so this is the newest battery available. Someone on here proved it was indeed a good battery.
https://www.amazon.com/dp/B07T28KL8B/ref=cm_sw_r_cp_apa_fabc_Q45SWSBEYV9A9AW6Q5QQ
Literally typed in essential phone replacement battery on Amazon. Got one with the 3M tape to hold down the new battery. I would buy the same glue again but recommend trying to find it in black. B7000.
Others on this site have noted less expensive sources Aliexpress, and so on. Search for those if you have some time. Many have offered comment and good advice. Just wanted to share my experience is making the change.
It is not a hard repair and the tools that came with this kit were sufficient, except do use the tip on a thin, plastic cutter. I've seen descriptions of pill blister packs, etc. Being used. I had success with a section of a clear lid from an Asian takeout meal. Thinnest I could find that was still stiff.
Edits Corrections to grammar and adds.
Yes, I still have the link.
I actually bought it from Amazon, not eBay.