Yes, the user-defined options has a lot more. But, I wouldn't have a clue what to set it all to for the lifepo4. How does the comms side work if you are using user defined? If I could use that, I think it would also be a way to limit the discharge?
I'm currently importing 30kWh of cells to make a DIY battery of a layout that can fit into a shaped area I have.
My current set of batteries will be up for grabs, 3 of them 15kWh in total. They only have about 300 cycles, one much less. All grade A cells. Two are branded Basen Green. They...
I am also regretting not getting a larger battery. 2x5kw will cost about £5-600 more than a single 10kw :-( I calculated that on average I had 4kw excess over the summer so 5kw should have been ideal. But it can't possibly be with hitting 70% in this weather!
I was looking at using an export...
@Derek De Leon you were lucky, I waited 2 weeks then had to call them. My API access request was prompt though (in the end I've decided to use modbus anyway).
@Umski I've hit an issue you might face. I went ahead a bought a 2nd battery, connected them in parallel, hooked up the comms. All...
Hi @Umski
Yes same AC couple RAI inverter. It only has the CT around the live to grid, where it (correctly as far as I can tell) measures the positive or negative flow. As I understand that is all the a acrel is doing via a CT too. I'm not sure why it needs the acrel other than, perhaps, to...
So, I've managed to completed the forms they sent and returned them. I did have the option of using an external declaration (£25) but chose to keep it simple and accept their £75 charge. I was able to use my EORI cash account reference instead of their chargeable deferment account. I'm...
Hi @Umski @SeaGal - I registered here because reading your posts was like reading my experience over the last couple of days. I've basically gone through the exact same troubleshooting process for why the batteries won't charge or discharge with a very similar set up.
I have 170ah of 12v (x4...
I was dealing with Roan and Jeffrey Peeters Roan van Diepenbeek.
It's coming to the crunch now though. I have received the delivery notification and forms to complete from Gerlach who I think operate on behalf of DHL for customs clearance. Not that I appointed them or asked for that.
They are...
I never got it working correctly, I had to use time charge / discharge in the end. It would not automatically switch between charging and discharging in self use mode. Have you tied resetting it (disconnecting DC) at a time when you expect it to discharge? That is the behaviour I found - a...
So, what I have done now which seems to be working well, is set time charging for 1amp in the early morning hours. This is enough to
Give plenty of hours of evening usage to get the battery used down to the SOC cut off I set (25 or 30, haven't settled on one yet)
Offset the inverter draw, and...
Right... if you then try to use all those in calcs, you have to start reversing signs. So I kept it aligned in that sense. You could flip them all of course, as an alternative, and still have calcs work without issue.
My inverter doesn't even have both an Acrel and Meter input - it is a single port labelled CT/Meter than only accepts a 2 wire connection. If you compare these two manuals you'll see the different contents and different layout of the ports:
https://www.ginlong.com/rai_inverter1/4268.html...
My case doesn't have a separate ground either...
@SeaGal I had my force charge on 15%, but it seems to have failed to work. Im hesitant to try it again...
I'm thinking about rigging up a contactor on timer or somehow interfacing on 232 to switch it off between certain hours (like I know it...
@SeaGal
The only setting you can change is the minimum SOC. The inverter and BMS then take a decision on the rest. Here you can see on 8th 20% was hit mid afternoon, then it continues to drop 1% every ~1hr20min. Green is charge or discharge, orange is SOC.
Similar, our total was 5.6kw. I'm...