(2-Pack) 2.4V 2000mAh Ni-MH Battery Pack Replacement for Nvidia Shield Game Controller, Shield TV Game Controller P2920, HRLR15/51, HFR-50AAJY1900x2

This battery WORKS as a relacement in the NUFACE TRINITY. My boyfriend replaced the old batteries with these. He did have to make a minor adjustment. He said they have to run like golf cart batteries run. He ran them so they create 5v instead of 2.4v. Connect the positive then the negative to the positive then the negative to ground. (see picture) After buying multiple other batteries this one finally worked. I am back in business fighting wrinkles. Also for you NUFACE users, the Gel Primer is expensive, but I found out that Astroglide works just as well and costs way less. Ha Ha! Long live the NUFACE Community! #nuface #nufacetrinity

Replaced the failed battery in my shield controller and worked flawlessly, my only minor complaint is that i wish they would've included the small apex screwdriver instead of an additional battery if costs were a concern. The bolts holding the controller together aren't your basic phillips, so be sure you have that special screwdriver on hand to remove them. This isn't a knock against the product as it worked great once installed. Now it charges like normal and holds a great battery life, should anything happen, you have that extra one on standby. Great value for the money and recommended!