Solar PV battery options

I just started to build the first V4 kit which arrived a couple of days ago. I have 2 of them. I have opened the first kit and was planning to build that and then make a video on the second build once I knew exactly what I was doing.

However, in typical Fogstar fashion, I seem to have the wrong accessories kits. Out of 3 previous kits, the sent me the wrong accessories kit twice. I mailed them after the order to tell them I was doing a build video and to make sure everything was checked and shipped.

Now, out of 5 kits, I have 4 wrong accessories kits 😫. It looks like I might only be missing the JK BMS connections and was given the old active balancer kit instead.

Can you confirm a couple of things.

1. Do you happen to have the accessories kit box, or photo of what was written on yours?
2. The image below taken from a Fogstar PDF. These are are correct 3 looms?
3. The small one on the left (1). Where does that terminate?

It's not a huge deal, but it's still annoying all the same, because anyone getting the wrong kit will probably think they messed up, or lost something. I'm happy enough I can still put it together 90%, but will have to delay the second battery build.

So, as I thought, the small loom will go to +16. Now I just need to get Fogstar to send two looms out.

I have to say, the V4 kit is much improved. Most of the wiring is already done. They made a few mistakes in their own video, but those are irrelevant now based on this new kit. They just need to get their sh!t together and stop sending the wrong stuff.

Almost finished the first one now. Just have to put the top back on. I'll be able to turn it on and update params if I want. With the built-in breaker, it makes it safe to break the circuit and connect the active balancer another day.

A branded battery of 5kWh is typically around €2.5k.

For around €1.7k you could get 15kWh if you go the DIY route with the likes of Solis. Well worth it. Plenty of videos out there, including a whole series I made on YouTube.

If you’re Dublin based, I’d be happy to help out if stuck. My own inverter is also Solis.

There are guys who sell the pre-made ones for about €2.1k and charge extra to install. Not a bad deal at all

Not so big. The one on the right is the latest version. I'm building 2 of them at the moment for my FiL

So, the Seplos battery above will cost differently, depending on what you choose. Great value no matter what.

If you are willing to buy the kit and build it yourself, it will set you back around €1,700.

If you buy one pre-built by someone else, you are looking at €2,100.

If you want someone to install it for you, probably €2,500, which is what you pay for a branded battery and a third of the storage.

Change-over switch for when the grid loses power would be around €800 I would guess. I remember someone saying about €600 3-4 years ago. I don't have one, as it's extremely rare to have a power cut where I live.

PM me if you have more questions about the seplos battery stuff, so i'm not repeating from other threads.

Easy mistake. Connect to RS485(1) on the second battery to RS485(2) on the primary battery.

Around the 13 minute mark.

Can get a 15kW battery into an attic with a hoist, from experience...