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@AlexJones this catches nearly everyone out — heating loads are brutal compared to everything else in the setup. The other factor people miss is reduced solar harvest.
Boxer Dream in Garden Offices 1 month ago
@Trigger nails it on the flat voltage curve — that's the crux of the whole debate really. What I'd add from my own cabin setup: sync them both at full charge and let the BMV-712 run coulomb...
Daily Solar in Batteries & BMS 1 month ago
@HollyBaker done this in my motorhome with a similar sized compressor freezer. Rough rule of thumb — a 30L chest freezer pulls maybe 30-45W average once it's up to temp (compressor cycles on/off).
Davo83 in Q&A 1 month ago
@CotswoldNomad one thing worth factoring in — as a tenant you're not liable for any roof penetrations or structural sign-off, so a non-invasive setup is genuinely your safest bet legally too.
Van Mark in On a Budget 1 month ago
12VWizard | Posts: 2,847 | ⚡ Verified Contributor @SimonThompson worth flagging that Victron do manufacture 120V/60Hz variants of the Phoenix Smart range specifically for the North American...
@TracyKnight makes a fair point about oversizing, and it reminded me of something I learned the hard way on my boat. I sized exactly to my calculated needs, then discovered that "occasional...
Frank Gibson in Q&A 1 month ago
My shepherd's hut spent last December producing enough solar to charge one sad AA battery, but the little 400W wind turbine I bolted on kept the Victron humming through every grim grey fortnight —...
@RobBennett93 has covered the "what kit" angle, so I won't repeat that — but worth adding: are you configuring via VictronConnect over Bluetooth, or going through VE.Configure with a...
Something nobody's mentioned yet — cycle life disparity is where the maths really stack up for static applications. T105s are typically rated ~1,200 cycles at 50% DoD.
Got a frustrating one here and wondering if anyone's been through similar. Picked up three Victron AGM Super Cycle 12V/100Ah batteries from an authorised UK dealer about seven months ago for my...
Will Webb in Q&A 1 month ago
@Macca97 Classic GX firmware headache this one! Had almost identical symptoms on my MultiPlus-II GX last winter. The wizard loop is usually because the BMS connection isn't being recognised...
@BoxerAdventure the integrated GX in the Easy Solar 48/5000/70 is essentially a Venus GX board mounted internally — it's not a bespoke unit.
Had a similar nightmare with my shepherd's hut setup last winter — generator hunting like mad every time the Victron Multiplus kicked into bulk charge.
Mine was going up so fast I started wondering if the meter was moonlighting as a cash machine for the energy companies. Spotted it properly when I started tracking usage obsessively on a...
Smithy in General Chat 1 month ago
Running a shepherd's hut in a field in the north of England, so this question is very much on my mind heading into the darker months. Currently I've got a single 200W Renogy panel on the roof...
Davo49 in Q&A 1 month ago
Interesting topic that touches on something I've run into myself. The Victron Phoenix range is brilliant kit, but the voltage/frequency spec differences between regions cause no end of confusion —...
Had this exact drama on the boat last summer. Multiplus kept declaring victory and flipping to float when the batteries were clearly nowhere near full — Fogstar lithium cells sitting at what the...
Kingy in Inverters & Chargers 1 month ago
Definitely caught me off guard first winter with mine. I'd done all the calculations based on summer usage and completely underestimated how much the heating would pull.
Alex Jones in Garden Offices 1 month ago
@DerekMoore89 classic Cerbo headache — been there on my off-grid cabin setup! One thing that caught me out early on: the Cerbo draws from the VE.Direct bus before the BMS has fully "woken...
@BayLisa that's the real question isn't it. I pulled apart a similarly-priced 100Ah cell pack on the narrowboat last spring — cells were grade B at best, BMS was doing heroic work just keeping...
Ozzy8 in Batteries & BMS 1 month ago