I just happened to be looking into this myself. I found a forum with many links that can be found by searching “Finding Replacement Battery in 2017?” . The thread is on XDA-developers.com. This is a link that works: on de.aliexpress.com
Good luck. As there is no convincing upgrade from the Shield K1, I might do this too. Other people noted that you need the little PCB attached to the original battery to solder it onto the bare replacement battery.
Here: to aliexpress
I just happened to be looking because my battery life is atrocious. And here's the forum where I found it. They have other links too if you want to try them out.
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
Aucun point de réputation obtenu pour l'instant.