LithiumSolar
Solar Enthusiast
- Joined
- Nov 19, 2019
- Messages
- 177
I pulled off two of the black covers and here's what's underneath. Something still looks a bit off but I'm not sure enough of what's going on that I am comfortable making a video discussing. I don't believe they were sanded, but for some reason it seems the glue was removed around the code and there is black stuff on the edges of both. It looks like the area may have been polished - perhaps before etching a new code? I really don't know... Other areas of the cell have the same questionable lateral marks (3rd picture).
The manufacturer replied twice and stated the following in reference to the question I asked and a picture I sent of the aforementioned video of B-stamped cells.
The manufacturer replied twice and stated the following in reference to the question I asked and a picture I sent of the aforementioned video of B-stamped cells.
Thank you for your reply, we currently do not have B grade batteries. All battery's are eve's A grade cells.
Our QR codes are not scratched off and re-laser engraved.
The QR code in the video has scratches supposedly from a sponge or something else.
This battery was developed at the time of technical evaluation used a small batch with B characters (not meet the use of automotive battery cells, fully applicable to energy storage batteries) of the EVE clls, in October 23 mass production has been upgraded to all the A cells.