There's a thread on another forum (which I can't post to) that is discussing the possibility of bad Thundersky cells. It states:
Every one of the good cells has the following on the negative side of the cell under an ink printed bar code.
TS-LFP40AHA followed by an 11 digit serial number/date code
THE SUSPECT CELLS ARE MISSING THE BAR CODE AND ALL NUMBERS, THEY ARE BLANK !
THERE IS NO PRINTING ON THEM AT ALL.
The XM-3500Li I have has the bar code and serial numbers. The one bad cell I have is being replaced (unfortunately, there's the what seems like inevitable stocking delay).
I'm not sure if the author of the thread on the other forum is concerned that the XM-3500Li has phony cells or just that a batch that he got were bad.
However, the cells in the XM-3500Li coming off the end of the production line are real Thundersky cells made by TS Ningbo.
