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I did notice an anomaly on one of my solar cell. It seam that the metal that do the connection inside the cell is getting "shiny" See images (first one is affected cell, second one is another cell (with some crap on it). Only one cell seam to be affected (6 x 400W panels). Is that some kind of...

It came to my attention that many people still buy PowMr SCC products. The Charge controllers they make are ripoff of MakeSkyBlue brand. PowMr old charge controller (just PowMr 60A on aliexpress, does look like the makeskyblue except it have a green label instead of orange): Dangerous, can...

Hi, I have a 48V system I have 1 bipolar DC Breaker (TOB1Z-63A) between my PV and my SCC. I have another TOB1Z-63A breaker between my SCC and my batteries. For some reason, the breaker between my charge controller and the battery tripped this afternoon. Lately we get some clouds so indeed, when...

I did make a lot of research on what part to buy on aliexpress to make a decent and reliable off grid solar setup with the lower cost as possible. As I see many people buying stuff on aliexpress without making enough research I decided to share what I found work well. I do own most of these...

Price of Lithium per ton in China (2020) : 6500$ Price of Lithium per ton in China now : 22000$ Chart is price of a ton of lithium in CNY (Chinese currency)

I just received 16 more "Mexican" cells today One cell positive post seam to be bent inward. Maybe ~3 millimeters. Is is safe to use or should I expect it to be more damaged internally? Edit : It's the most left one of the pack. I added some pictures to help see it.

Hi, I did install the first part of my system. I have 4 solar panels (400W ea) I have 16 lifepo4 cells, 100AH for a 48V system I have a 16S BMS Here the issue or maybe leading to the issue: The battery cells are part of two 24 volt battery (plan was to take them apart but on receiving them I...

Hi, I have been searching good battery solution for the new solar system i'm building right now. What I got so far : 10 x 400W solar panels (Voc 49.3 V) 2 x 60A Charge controller 1 x 3000w/6000w Inverter It will be a 48V system. The problem I have now are the batteries. Most if not all...