You don't mention the battery chemistry on the website. What is it?
Looks like it's supposed to be the same kind of cells as "90%" of all other ebikes.
The big difference is that the cells are not welded together like ordinary power packs are, allowing for straightforward exchange of cells individually.
Kind of a brilliant engineering design which lots of users should be able to accomplish the task using minimal tools, without having to go to a repair shop for a renewed battery.
Plus you could make sure you used only the best cells having an impeccable reputation and highest reliability.
The guy is a physics PhD, and for me it's still measurement & testing 24/7, so I would wonder what kind of test equipment he has at his disposal, or maybe has his own lab without relying on outside facilities, if any.
I'm no battery expert but that would probably give me an idea of what kind of readings I would like to see.
It would be great if we could count on a level of technical documentation far in excess of what's out there from the non-PhD-run companies.
A possible deficiency that comes to mind is the convenient, but small number of tools that are supposed to be enough for routine maintenance. If it doesn't already exist, maybe there should be a PhD-level cell checker that is affordable for the user also, to go along with the hand tools. Also a final assembly test rig would be good and that would seem to allow a layer of quality control to reach down to the user (re-)assembly process.
He specifically claims that it is the battery which is promoted on that site, which will get a Kickstarter in a few months. Obviously that can not be a genuine review.
Fake endorsements are a very common tactic on scam sites, where some snake oil is sold and you have "real people" giving extremely nice quotes about how great the product is.
We are a legit company, and we exist for 3 years (we even fundraised: https://www.breega.com/gouach-secures-e3-3m-seed-funding/)
The battery that we sell on the Kickstarter is our final product (the "v3" of our battery), but we had many initial clients (who came for bike electric conversion in our shop) and B2B customers on our previous prototypes, hence the reviews
We just thought we had a product which worked great now that we can open it to the general public, hence the Kickstarter: as we're still a startup, the economic model of the Kickstarter where we get the cash upfront will allow us to build a large batch of batteries for much cheaper
(maybe not initially, but they emphasize multiple times that you can/should change the cells inside the pack every three years)