Review on Rechargeable Battery Pack For Xbox Series X S Controller - 850MAH Capacity, Wire Charging Cable, LED Indicator - Compatible With Series XS Controller - NBCP Charging Kit (1 Pack) by Lukundo Lim

Fits nice and snug, but after multiple attempts to charge this thing it refuses to hold any charge.At first, I had it plugged in to charge for a few hours. When I plugged it into my controller it lasted approximately 10 minutes before it died.I tried plugging it in to the wall with multiple cables from 1-5amps and bricks ranging from 10w-25w. No juice. Tried charging it through the controller on all of those and eventually from the Xbox to the pack to no avail.Not sure if it was just bad luck or bad product in general but I would recommend just spending your money on normal rechargeable batteries. They never let me down.