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You can ask suppliers to provide a certificate of conformity and test report. If the report encodes the same as the QR code, they are the new GRADE A cell.

I came across this BLS battery website and code on the CF forum. It's seems cheaper and some batteries take 3- 7 days to deliver Does anyone buy it from here?

Hi all. I'm new to this forum so please take it easy on me. If I need to repost this somewhere else please let me know. I'm having a solar system installed on the house and I'm looking into building a battery system for it. the contractor will only install a Tesla powerwall or a LG Chem to the...