I bought a Jackery 500 portable battery pack five years ago and have used it with my Tone Hammer 500 and LDS 15/6/1 8 ohm cabinet. A four plus hour show and I still had capacity to spare. It was also handy this week when the storm took out power. With the Jackery I had my wife up and working from home with a cell phone hot spot, computer and two screens. If you do get a battery pack, make sure it is true sine wave output. Switch mode power supplies can have issue with dirty power.