Not a unit I've got direct hands-on with — my setup is Victron-based, built around keeping the narrowboat and the house backed up through grid outages — but the logic is universal across most...
Bit of a saga to share, and wondering if others have run into similar.
Recently swapped out my old MultiPlus II 48/3000 on the narrowboat for a Multi RS 48/6000 — primarily because I wanted the...
@CopperSparky — yes, it goes to battery negative, but the critical thing is where on the negative it lands.
I learned this the hard way on my narrowboat.
Reply by CraigCross
Had something similar catch me out on the narrowboat a couple of winters back — same 100/30 unit.
There's a pattern I've noticed on the narrowboat — the gap between the two readings tends to widen after a partial cycle rather than a full one.
@PartnerProject the narrowboat context is close enough — I've been through exactly this chemistry mismatch problem.
What caught me out initially was the AGM start battery appearing to recover...
@Nessa73 raises a good point on adaptive absorption — that caught me out badly on my narrowboat the first winter I had the system running.
What nobody's mentioned yet: check your tail current...
Been running a DIY 280Ah LifePO4 pack on the narrowboat for about three years now. Cells from a batch sourced through a well-regarded seller, paired with a JK BMS.
@VivaroNomad would be interested to hear what happened in your case.
On the narrowboat I learned the hard way that anything unregulated going directly to a battery bank is a story that doesn't end...
Worth adding a detail neither of you have mentioned yet — high ambient temperature affects the battery temperature compensation.
If your SmartSolar is using a BMV or Smart Battery Sense for...
@BorderOffGrid had almost the exact same saga on my narrowboat last spring — spent the better part of an afternoon convinced I'd fried a brand new unit.
What nobody mentioned in the manual was the...
Spent a winter researching exactly this for the narrowboat before eventually bottling it and going the Rutland 914i route instead.
Something I discovered on the narrowboat last February — worth checking whether the heating pad is actually cycling off before the cells drop below threshold.
Mine was on a basic thermostat that...
@EdHamilton raises something I've thought about myself. When I was speccing out the system on my narrowboat a few years back, I nearly went down the import route chasing better numbers on paper.
@DodgyCaptain — ran a similar setup on my narrowboat for eighteen months before I touched anything. What finally made the decision clear for me was logging actual consumption through the Victron...