Ok guys here are thé measures:
The victron is faulty or ??
Mike I prefer to charge to 14.5 because at 13.6 it's like 95% and I'd like to use my battery to the max.
Oh man it worked, as soon as I turned the discharge on the victron...
By Input you mean the panels? And output the battery?
If so then it's fine I will only get 6A max at input.
Pollenface, yep I know but I have a limited budget, and all in all I know my panels wont produce much more than 200w so I dont think it is a useful expense for me.
hi thanks for your reply. The battery is still new I didn't use it a lot I've just finished preparing my van and started playing with it :)
I will wait for the cells to reach 3.5v to see what happens then.
For the balancing advice thank you. I didnt know there were a risk if we start the...
I have 3 x 100W panels in series on my Van's roof (to charge a 12v lifepo4), each panel can produce between 5-6A current at 18v. So it means I can produce between 15 and 18A max.
As you know the victron 75-15 is limited to 15A, but it would be great if I could reach say 16 or 17A... Is it...
Thank you very very much for all these informations, I learnt more reading your message than watching many videos on the subject! I will dig more about all of this, and use what you said and a great starting base thanks again.
They recommend charging to 3.4v... ie 13.6v
From a comment under the video : Based on what I've read, LiFePo4 can withstand up to 4.2 volts before it starts to degrade. It's the charging to HIGH SOC that is harmful, not the voltage
Anyway 14.5v is fine by me, many people using this...
Yes in series currents don't add.
Ok to be sure, the 15A limit of the victon is it for the panels current (in my case 6A) or for the battery current (in my case could be more than 20A theoretically) ?
If it is for the panels then I'm good so I can get more than 20A to my battery.
If it is for...
Thanks for your help guys.
Distance between the battery and the mppt is about 30cm. Cable gauge is 10awg. I added an ANL fuse on the positive wire.
I will measure the voltage with a multimeter when I get back home and update, thanks
Sorry for the confusing title, but in short I have a 200Ah lifepo4 battery, as you can see on the pic it is charging fine via my solar panels and dcdc, but the JBD bms shows the remaining capacity doesn't increase anymore.
It shows 100% but the remaining capacity should increase as the batt...
Yes maybe. I think it makes this noise depending on the position the compressor stopped in, in the previous run.
Yep, it is sitting in it's normal position. I didn't shake it but I kind of give it a big tap with my hand and heard this bell ring while doing this.
Thanks for your help, much appreciated.
Yes I have solar panels and plenty of energy. I'd like to switch off the fridge during the night because sometimes when the compressor starts it makes a big noise that wakes me up. It lasts only a fraction of second but loud enough to wake me up. Hopefully...
I have a vevor 12v 25 liter portable fridge.
Sometimes when the compressor starts it makes a big noise that wakes me up during the night. It lasts only a fraction of second but loud enough to wake me up. Hopefully it doesn't do it each time the compressor starts. I'd say it makes the noise...
Hi guys thank you very much for your replies.
My battery is a 200ah one.
I think the bms doesn't show under 1ah consumption, I have to do some tests I only tried with usb lights . I think I also tried with a phone charging and saw nothing on the bms, but I can't recall well, have to do it again
Hello, the fridge came with the AC outlet and the 12v cigarette outlet, I'm using the latter in my van. My lifepo4 battery is almost always full. I'll try to open it to see what's wrong inside.
thanks for joining the conversation. Mine never did it while stopping, only some times when starting...
Yes I put 200 in the settings, i don't know why it shows 200.81 now. Strange. Anyway it should charge until this value then. From the moment i posted the message, it has now increased to 199.84 so i guess it is still charging but a bit slower than when it is discharged.
Thank you much for...
Edit: ok I found the problem, bad contact between one of the bms wires and a cell.
I built a 4s 200A lifepo4 (lichen cells) with a 100A jbd bms.
The cells came balanced from alibaba, each at 3.30v more or less.
I put everything together, everything was fine and I got correct data on the...
Sometimes when I deactivate the discharge by toggling the button on my JBD BMS (with the xiaoxiang android app), the cursor slides but it does not take it into account and you can still power stuff. And sometimes it is ok. Other times, I do it at night and it's fine for a few hours but in...
Well I have a little fridge running continuously in the van but it doesn't need too much energy, maybe something like 2 or 3Ah (vevor 25L). So i don't know if this fits the criteria of "constant load on the battery".
Also, a question I've never seen replied to is, since both 14v and 14.4v mean...
I read if we modify something in the app setup, no matter what it is, the app will kind of reset the bms so it will forget all the data it gathered previously to make an accurate guess of the battery SOC. Is it true?
I'd like to lower the max voltage value, I think it's called Pack...
Thanks guys for the help
I won't have any shading most of the time so series is the best setup for me.
6A is the max I will get at 18v so for 3 panels I'll get 6A at 54v.
The victron 15/75 is fine since it's for 15A at 75v, or I am missing something ?
Then since I have a 12v battery it means a...
Thanks for your help.
I use the app with bluetooth to disconnect the fridge during the night, to avoid the hassle of unplugging it. Since I don't use any other device during the night it was more convenient for me to cut the discharge from the bms, from my bed.
Let's say if I plug an usb light or something small like this, my bms still shows zero Ah consumed.
I think everything under 2 or 3Ah is not shown.
Does it mean if I let an usb light plugged during one month, the displayed battery SOC will still be at 100%? (Whereas we all know the battery...
Thanks for your reply.
Do you know if charging the battery at 14.5 let it stay longer at 100% than charging it at 14.2?
This 0.3v gap may w represents 1 hour at 100%? Don't know...
If it means nothing then probably 14.2 is enough.
Also when you say
I don't understand, do you mean I have to...