This is not a new product, though. Battery power inverters with AC and solar input are a popular class of products.
You can buy similar products with higher capacity and better solar input at Costco or Best Buy.
I think people are confused by the "Show HN" tag and the misleading way it's being compared to a Powerwall, despite not being a comparable product.
My problem with this post is that it's a "Show HN" from an account that registered 2 months ago. Their only activity is this post. It's pushing a product with misleading marketing comparisons (It's not comparable to a Powerwall) instead of similar products on the market. The poster is also making claims in this thread that contradict their own marketing on the website. Their website says it will run a fridge for 1.3 days, but one of their employees is in this thread making claims of 2-3 days in some places and 3-4 days in other places.
The negativity is because this is a misleading marketing piece and a lot of people are getting tricked into thinking this is a new type of product.
Some examples of competing products with better specs and lower prices:
https://www.bluettipower.com/collections/power-stations
https://us.ecoflow.com/collections/delta-series
EDIT: This thread is being astroturfed. Someone affiliated with Pila is alternating between talking about developing Pila and pretending to ask questions about Pila. See this comment pretending to ask if it qualifies for the Investment Tax Credit: https://news.ycombinator.com/item?id=43339416 . It took me 10 seconds to find his LinkedIn page where he's clearly associated with Pila: https://www.linkedin.com/posts/chadconway_pila-energy-is-8-o...
EDIT 2: Here's another comment where 'chadconway' pretends to ask a question and 'coleashman' answers it: https://archive.is/ws9bp . Both accounts are associated with Pila. This is a clear attempt at astroturfing.