Recent content by SIsolar

Yeah, borked unit sounds likely at this point. I might have to try another. I am not certain why it would need a separate power supply as it clearly has power. Thanks anyways.

OK, I tried switching the wires from the shunt around--I still only got all 8's. That was a useful suggestion, it just did not bear any fruit. Does this sound like a dead unit or does anyone have some idea that I am missing? Thanks for the suggestion Mattb4

Mattb4, That is really useful information and I can easily test it. I would never have guessed it myself. As I said, I did hook it up according to the directions, but I have already had one bad set of instructions on this project—the brass terminal on some switches had the wrong polarity. I...

AHHHH!! Never Mind. I meant this one. https://www.amazon.com/MNJ-Multifunction-Battery-Multimeter-Voltmeter/dp/B07W7XXKVF/ref=sr_1_6?keywords=battery+monitor&qid=1664203327&qu=eyJxc2MiOiI1LjU5IiwicXNhIjoiNS4wNiIsInFzcCI6IjQuODQifQ%3D%3D&sr=8-6

I entered the wrong item. Please look at the next post.

This one--...

Well, you are not wrong. Unfortunately, I bought the meter from Amazon and it was some nameless, brandless battery monitor. I will see if I can dig up the original one on Amazon.

Hello everyone and thanks in advance! I have previously mentioned that I am building a 20 AH LiFePo4 battery generator as a sort of prototype for the real thing. I am about 85% finished and have a battery monitor attached, but when I power the device up, the battery meter reads all 8's. Every...

OK, got the part about the Battery=cells+BMS. Actually, that makes sense and it just sounds like the way that any lithium battery should be (do 18v tool battery packs have a BMS? Seems like they should.). My LiFePo4 system does in fact come with a battery monitor which seems essential for any...

Rocketman, Thanks for getting back to me. I guess I was overly verbose in my initial question. So per your answer, does this mean that the BMS and SCC both connect to the same electrical point? Or does this mean that the setup looks something like: Solar panel > SCC > BMS > Individual...

I am pretty much a neophyte here so please forgive me if I am asking the most rudimentary questions of if this has been asked before. Background: I have built a little 12v DC only battery box with a 15 ah SLA battery complete with charge controllers. I copied a YouTube video. It was a good...

rmaddy, I am using the battery as it shipped, so have not actually charged it at all. But as you suggested, I put it on a little charger I specifically bought for the occasion and the charger indicated that the battery was at 60%, suggesting that it did not actually ship with a full charge...

Hello, This is my first post and I am full of questions. But first some specs on my build. I am building as a hobby a solar generator with a 12V, 20 AH LiFePo4 battery. It is housed in a rolling tool case (about 25 gallons). The outputs will include several USB ports, two car 12V ports and...