I waited so long to get a battery bank for my Nintendo Switch because I wanted one that would work for me. So I checked the Gulikit attachable battery bank and this is what I found out. This product is available on Amazon.com for $42.99. This thing works out good if you want a good grip of your Nintendo Switch. Other battery packs cover the whole back of the Switch and that limits your hands to hold just the Joycons. The only problem I see is that you can't use the kickstand anymore with this battery bank.