Fully agree... makes very little sense that the MPTT provides a separate feeding interface... my opinion is that the MPTT output should feed directly the busbars. Another thing is whether that output has to be protected against reverse bias (the MPTT itself should have already inner protections)...
Why did you feel the need to add a second LB to start with? My factory LB can run my van quite happily (fridge, USB points, lights).
I have upgraded recently so I can run 240voffgrid and in the end just brought a power station to keep things simple and can take it with us if/when we swap vans.
My Clayton LPS1500 lets me run fully offgrid with access to 240v (upto 1500W). BUT with a fridge running you are looking at 2 days, 3 days max IF you arent recharging it via driving or solar
EHU just provides 240v into the van. If you want it to charge anything (LB or SB) you need a charger in the system. Some complete systems (e.g. CBE) may have one included. A custom solution will need one added such as a Victron ip22.
I haven’t fitted mine (cables installed but not the charger)...
@The Flying Scotsman
We use a Ctek smart charger, which are you using do you know
Only asking to see if there compatible with the Delta charger
Do you get the approx full charge time of approx 2hrs as advertised
Hi, I hope you don’t mind I’ve just quoted this on my new post - this might be a solution that could work for me. Can I just ask what your run off this system and how long you can last offgrid please?
(Sorry to hijack your post @Whittle1000)
Thanks
just double checked.
The Victron Multiplus have an internal transfer switch that will switch L,N,E
when on EHU LNE are pass through with no N,E bond
when OFF EHU and on Battery - N,E are internally bonded. - so that onwards RCDs will trip with a L/N,E fault
+++
the smaller Victron...
Your inverter is putting a pretty extreme load on the 12v system.
If you want to be offgrid with 240v heating loads like that you need more capacity and at least double batteries, as you are finding single batteries cannot supply the current.
Just to check on the fridge - it is a compressor fridge? Assuming so, your 12v loads are a pretty typical off-grid set-up so shouldn’t be an issue assuming an adequate recharging strategy (usually a DC-DC and preferably solar too).
The inverter running 240v loads is another matter, it’s...
The Renogy inverter is fine.
If its powerful enough for your requirements.
Maybe just fit it to a dedicated socket/s
And have your standard EHU feed Via CU to different socket/s
Or as @roadtripper suggested above. Use the inverter exclusively to run the sockets and have your EHU power a...
I don’t know if this is the best thread to ask the question. I have a ‘traditional’ AGM leisure electrics install with a 130 w solar panel on the roof. It gives me 12v power off EHU and 240v on EHU. If I replaced the AGM installed under the drivers seat with a LiFePO4 would I need to add/change...
For sale is my LWB T6 indium grey camper.
2019 Volkswagen Transporter campervan
2019 T6 T32 DSG LWB highline kombi campervan conversion. 45k miles. Full main dealer service history (last service Feb ‘25). New cam belt and water pump. New power steering unit and rear disks and calipers. Will be...
Yeah - if you want to use 240v stuff on an inverter AND be offgrid for more than a day or 2, you really a big-ass set up in every way: Battery, solar, DC-DC.
Real world example, on my euro trip last year I stayed at a campsite which was a fairly shaded spot. I was there for 3 nights, or 2.5...
Thanks.
Thats just a 240v extension lead sitting on the unit. I use it for the tv when on EHU. Tv is 12v also for offgrid.
Think my set up is pretty standard with a leisure battery on a split charge system with the addition of a solar panel on the roof.
I can run the fridge, lights water...
So my factory fit LB is now 7 years old and had another hard winter with van in storage. Was struggling last year so suspect it's on its last legs now.
Been looking at replacing with a lithium but under seat placement restricts size. Also would need to upgrade B2B (plus add inverter). All...
The larger power packs are an option for some situations but the OP has a diesel heater and they tend to need permanent power which those types of devices generally can't provide.
It's an alternative to a fixed inverter though, the challenge is recharging then effectively. The ones that can...
Thanks very much. Seems a similar setup to mine; I am debating just going for a offgrid power unit that can be carried rather than lithium just so I don't have to change lights etc.
With regards to your captain seats; are they OEM? they look like the ones from Camper Beds & Seats
Are they...
...size and power and types of charging source. Their placement and power will drive cable size and fuses. For example, no need for a mains charger if you are offgrid or no need for an inverter if you don’t need 240voffgrid. No inverter means a smaller battery, means smaller gauge cables etc...
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