Recent content by Whats_per_question

I think it is more likely that your batteries are the issue. If you have a BMS that averages, and your batteries are 18%, 23% and 25%, the master BMS should be reporting 22% to the Growatt If you have a BMS that sends the highest under charge, and the lowest under discharge, you will get either...

Late to reply again sorry, but yes, I believe the probability of getting exactly what you paid for when you are a one-time purchaser are very low. "one-time purchaser" is not a slight or pejorative, its just a fact that you won't be on anyones top-buyer list like a retailer or wholesaler might...

With respect to your copy/pasta from alibaba.com ... I've said it before, but i think it's still valid; getting ripped off when you have no pre-existing relationship with a foreign supplier is the norm (for some countries), particularly for cells/batteries, where B,C,D grades etc are hard to...

@NZ12VOLT What's your cell number?

Yay for good deductive reasoning. Top marks to @zcskywire2 That would have been easier if the cell manufacturer had the info in an open format easily available.

A QR code is just bytes, with a particular encoding (and represented graphically). That might be text, symbols, binary, characters from various ASCII code pages - it all depends on the author's decisions. This is the same issue with computer files - the file is only unambiguous if the file...

To veer off topic for a moment ... To some extent, there is a valid justification to using the acronym "PWM" in the specs of an MPPT controller, but no justification or weasel-words that will make it ok to add "MPPT" to a PWM controller specs. With a true MPPT controller, there is a PWM element...

@pollenface : Can you list some brands with fans? I've never seen one with a fan, but a quick search found a Kavolet on Amazon with a fan, and one self-branded one from FAZCORP (a NZ solar retailer) and some plans to 3d print a cowling for small computer fans to help a victron stay cool.

Here's a trader on TradeMe that is claiming that PWM are the most common controller used, and this is because they "do not use moving parts like MPPT controller" Do any of you have enough PHDs between you to work out which are the "moving parts" in an MPPT controller? Maybe the trader is...

From what i have learnt, with CAN, the inverter is passive and just listens. The BMS sends periodic messages, so the inverter just needs to know which protocol to expect. The requirements seem to be only 2 things; correct protocol set on the inverter, and messages arrive in a timely manner...

Sad news for everyone on the forum (and members of the public who are not aware of the scam); In typical TradeMe style, it seem that our comedian trader on TradeMe has been shut down, but the scam sellers are still up. Another case of TradeMe shooting the messenger, blessing the scammers.

@pollenface : What problems did you have? I've designed/installed/troubleshoot many epevers, and other than a small number of outright failures (battery terminals becoming short circuited, or the dreaded click-click but no screen, or just totally dead) i've had few issues. The Epever do seem to...

@RLP : Not sure where you are in NZ, but give the guy at roar power a call - he has lent me time on his cell testing machine to check 8 cells on a 24v battery for me, and found a bad cell. He might also have spare cells that might be a match for your cells, as i know they have EVE cells in some...

Bjorn; That's a good point, but lets take that (impractical) idea further; what size fuse would you use? Lets say you have a 100/30, and your panels are a massive array of panels with pairs of my current favourite panel ( 430w N-Type TOPCon, with 30 year linear power output warranty ) which has...

I feel that some forum viewers might have missed some points on how the SCC works (this applies to Victron but maybe not other SCC); All this is presumed to be at STC - Standard Test Conditions - and your conditions may be above this, but probably below it. The panels produce a Voc when in full...