Where to get a quality OEM battery replacement for Samsung Tab 4 10.1

[alphacoyle]

I see replacement batteries offered that have Samsung logo on Amazon etc, but would like to be able to get authentic replacement as majority of reviews state replacement batteries lose charge after around 8 months, while the original got used hard for years before wearing out and even now lasts about an hour. How do I know for sure it's an OEM Samsung battery? Thanks.

 

[t53186]

Samsung has them https://www.samsung.com/us/mobile/mobile-accessories/phones/galaxy-note-4-standard-battery-3220mah-nfc-eb-bn910bbusta/
Newegg has them https://www.newegg.com/Product/Product.aspx?Item=0SC-0007-00JM7