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After squeezing every watt out of my motorhome setup (200Ah Fogstar lithium, 400W of panels, Victron MPPT), I'm wondering if the same logic scales up to a proper garden office my missus wants...
Alex Hobbs in Garden Offices 4 months ago thumb_up 6
Really useful thread, this one. I ran a similar parallel setup in my static caravan before I moved to full off-grid living, and the one thing nobody warned me about was keeping the cable runs to...
RetiredNurse43 in Solar Panels & Controllers 4 months ago thumb_up 8
Running a 400W roof array (2x 200W Renogy panels) into a Victron MPPT 100/30, feeding a 200Ah Fogstar Drift LiFePO4. Works a treat for the usual stuff — lighting, 12V fridge, laptop.
Lucky Skipper in Motorhome & Campervan 4 months ago thumb_up 6
Curly63 | ⚓ 847 posts @SuffolkExplorer the voltage drop under heavy inverter load is your likely culprit before you even think about jumping to 48V.
Curly63 in Marine & Boat 4 months ago thumb_up 4
@VictronPro good point on winter derating — I learned that one the hard way on my narrowboat setup. One thing nobody's mentioned yet: what's your backup plan for extended bad weather?
Finn Taylor in Off-Grid Cabins 4 months ago thumb_up 3
Been meaning to post this for a while. Spent most of last weekend fitting a 200Ah LiFePO4 battery (Fogstar Drift, for anyone wondering) under the bed in our 2018 Transit LWB.
Mick Davies in Motorhome & Campervan 4 months ago thumb_up 2
MPPT_Wizard | Posts: 1,204 | Location: Array This bit me badly last February with the shepherd's hut build.
MPPT_Wizard in Batteries & BMS 4 months ago thumb_up 6
Has anyone actually looked at what the 24V battery bank state of charge is when this trips? I had a similar issue with my backup setup and it turned out the inverter was cutting out partly because...
Sunny Nomad in Inverters & Chargers 4 months ago thumb_up 6
Just wait till you're moored up in the middle of nowhere, engine off, watching the Victron app tell you your Fogstar is sat at 47% — the Orion-Tr Smart basically becomes your new best mate at...
Brummie84 in DC-DC Chargers 4 months ago thumb_up 2
Hey @NicolaTaylor72! One thing worth checking that nobody's mentioned yet — have you looked at your tail current setting in VictronConnect?
Donna in Solar Panels & Controllers 4 months ago thumb_up 6
Interesting thread — not on a narrowboat but running a Multiplus at my cabin and the seamless transfer is exactly what sold me on it too. Quick question for @HazelDawn though: how are you finding...
@Spud79 I went through exactly this with my garden office build — started cautious on inverter sizing and ended up wishing I'd spent the extra upfront rather than replacing kit a year later. The...
Pike Walker in Marine & Boat 4 months ago thumb_up 3
Currently running a 2kW Victron Multiplus on my 48V narrowboat system and wondering if I should have gone for the 3kVA when I had the chance.
Spud79 in Marine & Boat 4 months ago thumb_up 5
Curly63 replied: Yes, running a Compressor fridge (Brass Monkey 35L) full-time in my Sprinter through two UK winters now on a similar lithium setup.
Curly63 in Motorhome & Campervan 4 months ago thumb_up 7
@RobHenderson adding to what @DY_Power mentioned about temperature compensation — if you haven't got a MultiPlus temperature sensor (the VE.Temp dongle), that's almost certainly your culprit.
Camper Rachel in Inverters & Chargers 4 months ago thumb_up 9
Not to derail into static caravan territory, but the LiFePO4 journey is the same whatever the vessel.
Sparky Sparky in Motorhome & Campervan 4 months ago thumb_up 5
Has anyone checked the actual low temp charge cutoff setting in the JK app? Mine was defaulting to 5°C but the hysteresis (recovery offset) was set to only 1°C, meaning once it tripped it wouldn't...
Bomber in Batteries & BMS 4 months ago thumb_up 4
@NicolaTaylor72 had this exact problem in my garden office before I sorted the insulation. One thing nobody's mentioned — ventilation is as important as insulation.
Rodney in Off-Grid Cabins 4 months ago thumb_up 5
DebbieTaylor | Posts: 312 @OakTel Worth checking your cell 3 connections first – a high-resistance joint can cause voltage to sag disproportionately under load and mimic a weak cell even when...
Debbie Taylor in Batteries & BMS 4 months ago thumb_up 9
@Boycie25 and @JubileeClipHero95 have covered the estimation side well so I'll just add — in my motorhome the BMV-712 drifted badly until I nailed the Peukert exponent and charged efficiency...
Wild Tinker in Batteries & BMS 4 months ago