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LindaPrice87 | 847 posts @Del72 I run almost the exact same setup on my boat — Orion-Tr Smart 30A plus a SmartSolar 100/30.
Linda Price in DC-DC Chargers 5 months ago thumb_up 3
@PaulaFisher91 makes a solid point about the Daly's balancing window. Worth adding: passive balancing dissipates energy as heat, so if your cells are drifting more than ~10mV at rest after a full...
Stu Campbell in Batteries & BMS 5 months ago thumb_up 8
Trying to get my head around whether a DC-DC charger makes sense in my setup. I've got a static caravan on a plot with no grid connection, running a Victron 12V system with 400Ah of Fogstar...
BlownFuse in DC-DC Chargers 5 months ago thumb_up 6
Squib82 | 203 posts @MultiPlusNerd One thing I haven't seen mentioned yet — check your absorption time settings.
Squib82 in Q&A 5 months ago thumb_up 2
HarbourSam | 📍 South Coast | ⚡ Off-grid since 2019 @Ray1981 worth checking your shunt's calibration resistor value too — a lot of these budget units ship with tolerances way outside spec, which...
Harbour Sam in Q&A 5 months ago thumb_up 4
Tom1997 | 47 posts @Roger1983 great project, really jealous of that price! I picked up a 30kWh Leaf pack (the 2016-ish "lizard" chemistry one) last year for £550 and it's been solid.
Tom in Emergency & Backup Power 5 months ago thumb_up 4
@JH_Power to build on what @RustyRoamer and @MarineKaren are saying — before you even think about panel wattage, sit down and list every device you plan to run along with roughly how many hours...
Van Wez in Q&A 5 months ago thumb_up 6
@MarshSoul worth adding — cold panels produce higher voltage than spec, not lower. Two 200W panels in series on a frosty morning could be pushing your Voc well above that 48V figure.
Ian Pearce in Q&A 5 months ago thumb_up 8
Chris1966 replied: @Lisa1978 Had almost identical grief with mine last winter. One thing nobody's mentioned yet — what cable size are you running between your batteries and the MultiPlus?
Chris in Inverters & Chargers 5 months ago thumb_up 5
Hey @PaddyGibson, done something similar on my allotment setup — mismatched panels on a single Victron MPPT.
Brummie92 in Solar Panels & Controllers 5 months ago thumb_up 3
Not a boat setup myself — static caravan — but the wiring principles carry over. One thing worth adding: make sure your fusing is right at the battery terminals, not halfway down the run.
HY_OffGrid in Marine & Boat 5 months ago
So I've got two 200W panels on my static that I picked up ages ago, and I managed to grab a used 175W panel cheap off eBay.
OffGrid Dawn in Solar Panels & Controllers 5 months ago thumb_up 1
So I've been scratching my head over my setup for a few weeks now. I've got a Renogy 40A DC-DC charger fitted in my Transit-based van, pulling from the alternator into a 200Ah LiFePO4 leisure...
Spider85 in Motorhome & Campervan 5 months ago thumb_up 1
HalfAJob93 | 47 posts @MistyNomad nice setup! One thing worth considering — if your MPPT and Orion are both Victron, get them talking via VE.Smart networking.
HalfAJob93 in DC-DC Chargers 5 months ago thumb_up 2
EmmaPowell74 | 847 posts | ⭐ Trusted Member @Ben1989 The Cairngorms in January is brutal, so I feel your pain! Have you looked into a small wood-burning stove?
Emma Powell in Off-Grid Cabins 5 months ago thumb_up 8
Great points from @Sam1965 and @TimKnight already. One thing worth adding — don't just size your MPPT on Voc alone, you also need to check the maximum input current against your panel's Isc.
Marsh Hermit in Solar Panels & Controllers 5 months ago thumb_up 2
What's your actual load profile like @ValleyTony? That's the bit that determines whether 400W cuts it or not. I've been running something similar on my boat and the numbers look great on paper...
@SaltySocket good shout on the Fogstar Drift cells, solid choice. Two things worth considering for under-floor mounting: Condensation — a small silica gel pack inside the enclosure helps, but more...
Vivaro Dream in Motorhome & Campervan 5 months ago thumb_up 7
@MarkAllen69 worth considering what you're actually running before throwing more batteries at it. I've got a similar setup in my static caravan and spent ages second-guessing the battery bank...
Charlie Stevens in Garden Offices 5 months ago thumb_up 2
MaxFrost | 87 posts Had almost identical confusion on my boat last winter — the Victron app was showing 40% when the battery was practically full after a proper charge cycle. One thing worth...
Max Frost in Q&A 5 months ago thumb_up 3