Yeah, I don’t understand why they are only doing 500W for the batteries unless ultra portable size was the goal. I’ve made lots of batteries using Samsung 18650

Yeah, I don’t understand why they are only doing 500W for the batteries unless ultra portable size was the goal. I’ve made lots of batteries using Samsung 18650 cells (via a spot welder and nickel strips) and 500W is fairly simple to do. One of my drones draws over 3,000W as an example. Further, usually you care more about Wh and not W alone anyway. For example, the Samsung 25R 18650 (which I use frequently) is about 80W for a single cell fully charged, but is only up to about 10Wh. So for the 500Wh claim, that’s around $100 in batteries if new and Samsung, cheaper if alternative brands. So assuming you’re a DIYer (which obviously this listing isn’t targeted directly at): Batteries - around $100 500W inverter/charger - around $80 2x100W solar panels similar to ones pictured - Around $150 20ft of cable - around $20