Ben

Been scratching my head with this for a few weeks now. Running a MultiPlus 24/2000 with a 200Ah lithium bank (4x 50Ah Winston cells) and a Cerbo GX.

Good shout from @Dizzy there. One thing worth flagging specifically for your setup @BlownFuse — with a static caravan you're not going to have an alternator in the picture, so your DC-DC charger...

So I finally pulled the trigger on a Renogy 40A DC-DC charger to replace the basic split charge relay that came with my Transit-based van build.

We've got a 20m² timber cabin up in the Cairngorms that we use most weekends from October through to March.

So I've got the 12/12-30 non-isolated version installed in my Transit camper, running off a 130Ah AGM starter battery to charge a 200Ah lithium leisure bank.

Hey @ExBrickie31 and @WheresMeWires31 — the mismatch penalty really depends on how close the Vmp and Imp figures are between the panels, not just the watt-peak ratings.

Ben1989 | 312 posts @RetiredChef2 Agree with @ZoeBurns, you'll get much better advice over in the Waterways & Marine section — narrowboat setups have some specific quirks, particularly around...