Recent content by MrMatt

Any updates on longevity?

Yes, my panels rest on open ended poly-something tubed pane for heat dissapation. What I have read in reviews mostly amazon is people are stating they are getting more than 4 years ( found a post saying 7 years to date). I think it is the brand I used, and will get a 4+ year warranty on the next...

So ... getting my VW bus out from winter storage, and checked all things solar. 4, 100 watt flexible panels on the bus top- same manufacturer In the sun, Vitron was saying 0 volts Tested each panel and found 2 of the panel are now bad.. 1 = 0 volts, other 2.1 volts The dead panels wires were...

Yes, i agree, Very nice setup.. Thanks for the input, much appreiciated!

Thanks for the quick reply! I do have heavier gauge wire than #10 Yes, am very aware of the quick charge to 3.5, have to watch it like a watching a toddler with a fork by an outlet. Hmmm. may put them together then do the BMS. Thanks So, again even a 12V 45 amp charger would be fine.. not that...

Ok, seems like a simple question but want clarification.. Cells; Eve 3.2V 280AH Capacity test In wanting to do a capacity test on my eve cells, Say the cell is at 3.2V IF I were wanting to bring them up to 3.5V, charging them at 3.5V with my DC power supply ( 30V, 10 A max) shows maybe 2...

Thanks!.. are these guidelines for LiFeP.. heard CATL has switched their cathode from LiFeP to Li manganese iron phosphate.. not sure if this change only applies for their batteries designated for electric cars or not..

Thank you

Also in the table I see OCV, .. should this read VOC? just saying...

Thank you again.. love this learning!

I would think even 0C is so far above 0 kelvin ( = -270C) the difference between 20C and 0C would be negligible comparative re: reactions but what do I know about this.. I keep reading...

Thanks.. I did not catch that... just focused on the table..

Thank you so much!!!!.... But as a newbie, not quite sure at the moment.. what the "25C rested OCV" means. Is this the equilivent cell voltage at 25C? -implying it would it voltage be different at 8C? Would be surprising to me

Greetings... I have 4 eve 280 AH 3.2V bounded to make 12v in VW camper I left a small draw appliance running unknowingly which brought my batteries down to 2.8V argh! Found this out when went to set my batteries 50% charge for the winter. Engaged my solar panels - battery cells now 3.2V EVE...

Sorry I mislead, ...better said this way after I looked it up..."normal car batteries are considered to be “fully discharged” at 10.5 volts, which is only about 80 percent of full."