I bought a no name brand VaeTuka solar power station that just fits in the side compartments in my semi. It has about 1,900 Wh capacity with UPS backup function... I was reading specs, and it's only got a cutover response time of like 10ms which may not be enough for some sensitive or high draw appliances, but then I thought, why not pair it with the traditional UPS under-desk brick and get the best of both worlds, fast cutover and long battery life. Just mix and match to get the system specs you want?