Li polymer Rechargeable Battery compatible with the k1 shield tablet Nvidia Shield 147*63*3.8mm|Tablet Batteries & Backup Power| - AliExpress
Amazon.com: Replacement Battery for Nvidia Shield Game Controller,Shield TV Game Controller,P2920,fits HFR-50AAJY1900x2(B),HRLR15/51,1800mAh/4.32Wh : Video Games