Answer to "Where can I get a replacement battery for my NVidia Shield tablet?"Hi. Changed my battery in february this year (only the cell) and tablet is working fine.
Answer to "Why is my battery dying so quickly?"You should update your shield tablet to 3.1.1 (android 5.1.1). After that go to settings -> about tablet -> status. Now it displays your battery type. If there it says Y01 you're in for an replacment. Follow that directive here: http://tabletrecall.expertproductinquiry... I also have one with bad battery and got an replacement.
Answer to "Where can I get a replacement battery for my NVidia Shield tablet?"Hi, got the same problem. :( Now I got two shield tablets, one with a really bad bad battery and one completely new and NVidia also told me to dispose of the "broken" one. I found this while searching for an adequate battery: https://www.youtube.com/watch?v=BJfV5Dr1... That guy opens it up and also shows a comparison between original and replacement. And further research told me that getting the "original" battery is impossible but a replacement "as close as possible" is very well, possible. The replacement I found is a little "weaker" in capacity and also a little bit smaller (by mm's) but still better than a "soon to explode" one. It goes by the name "LG L238" or sometimes "Lenovo L238" (150x64x3,5mm 5000 mAh) - 3564150. I found three resellers on aliexpress... I don't know their credibility... anyway here are the links: http://de.aliexpress.com/item/L238-3-7V-5000mAH-3564150-polymer-lithium-ion-Li-ion-battery-LG-cell-for-tablet/32360171155.html...