Ahoy matey, for your shopping needs in Hermanus I'd recommend the EcoFlow River 2 Max Portable Power Station. At R7749 it has a huge 512WH battery that can power your devices for days and a 500W output. Plus its 220W solar charging means you can top it up from the sun. It's perfect for camping trips to keep all your gear charged up. Just down the road in Hermanus you'll find Takealot and Kalahari, both of which list the EcoFlow on their sites. Hope you find the power you need mate! If they don't have it in stock, let me know and I'll search some other spots.