Search results

Here's a couple better pictures where you can see that they are not sitting flush on the terminal. I appreciate the votes of confidence, but in the end I decided I'm just not comfortable with it and will return them. I have ordered some new version grade A cells that have the double grub...

Rich Solar confirmed that the spec sheet is incorrect, and all of the temperature coefficients should be in celcius. So the correct coefficient for my panels is -0.39%/C. Better, but still too close for comfort as at 0C that puts my system voltage at 99 and change. I went ahead and returned...

Ordered EVE 230ah cells from Docan. They have threaded posts welded on with a square base, and are only welded on 2 sides. Some of them I can see light underneath, so they are not sitting flush. Two little welds isn't a lot of metal. Is it enough for 1C+ discharge rates?

Rich Solar got back to me. Here is a link to their spec sheet. It lists coefficient of Voc as -0.39%/F which is -0.70%/C. Yikes, that's bad! So I'm wondering if it's a typo and should be celcius rather than fahrenheit. I wrote them back asking them to double check. We'll see what they say.

Good idea about switching to 2P. I assume I can monitor voltage real time through the victron app. I'll wait to see what richsolar says to make sure that number is correct. I searched around a bit more, and learned that the coefficient is per diode, and goes up as more diodes are put in...

Well, I'm a full time nomad and I tend to avoid the cold but I'd like to be able to handle some cold conditions on occasion. I found the paper in the resource section on adjusting panel VOC for temperature. I'm calculating a 3.6V increase at 0C. It seems I can go all the way down to -35C...

Shoot, and I just ordered the 100/30. So I should go with the 150/35 then? Here are the coefficient numbers for the panel. How do I use these to determine the change as the temperature drops? Temperature Coefficient of Pmax 0.21667 %/°C Temperature Coefficient of Voc 0.16111 %/°C...

Thanks for the offer. I'll let you know how it goes.

Thanks for you suggestions. I added breakers on the appliance circuit and panel circuit, and upgraded the inverter leads to 2/0. I also changed the wiring to reflect that the fuse blocks have their own ground bus for the appliances they power, which will simplify things. Right now I'm not...

They said they aren't aware of the problems the heater units have had, and that all of the ones they have in stock are the latest model. I went ahead and ordered one.

Yeah, I sent them an email.

Thank you both. Very helpful. The jk-b1a24s15p that 18650 store has should be sufficient at 150A continuous. How do I tell if this is one of the suspect units with heating control? I see nothing on the spec sheets about which models are heater enabled. Or do they all have that functionality...

latest version with wires sized. Am i missing anything? I feel like I'm ready to start spending money...

This is my first time building a battery - an 8s 230ah 24v lifepo4 for my van's solar, and I'm trying to decide on a BMS. I need at least 125A continuous discharge to be able to use my inverter's full capacity. I've been looking into JK BMS and am finding their website and other internet...

Here's the latest version. I added the smart shunt, and some busses, upped the main CB to 160 amps for inverter load, and decided on a Giandel 3000w unit. I looked into inverter chargers, and for the price and size I don't think it's worth it for me. If I decide in the future I need to be...

Sorry for the confusion, it's one 24V 230ah battery - about 5,500wh. I'll change the diagram to reflect that more clearly. I'm planning to build my battery with the overkill BMS. Would that fill the same role as the shunt based monitor?

Is this what you mean?

Hello All, I have no experience with solar, but have been watching lots of videos and doing a lot of reading here on the forum and elsewhere. I am designing a system for my camper van. I expect to consume up to 3000wh/day but more like 1500wh most days. So the battery is sized to store...