What's New

Latest posts across all forums

Latest Threads Unanswered
@FellGraham "Sunday-best voltage" is brilliant but my static caravan cells are more like Monday morning before coffee voltage — technically alive, deeply unimpressive under any actual...
Copper Maker in Batteries & BMS 2 months ago
Been thinking about this setup a lot lately after chatting with someone running a small fabrication workshop off-grid. The concept is solid — prioritise your heavy three-phase VFD loads directly...
@ShortCircuit yes, hit exactly this with my setup last autumn. Worth checking your DVCC settings if you haven't already — specifically whether "Limit charge current" is properly...
Doug Lamb in Batteries & BMS 2 months ago
Every year without fail I get caught out by this 😄 Both spring and autumn somehow manage to surprise me even though I've known about them my entire life. My Victron MPPT and the Cerbo GX both need...
Expert Camper in General Chat 2 months ago
Been following a few threads lately about the Victron Lithium NG range and it's got me thinking about something I noticed when I added a second unit to my own setup last spring. My first NG 200Ah...
Jock in Motorhome & Campervan 2 months ago
@RetiredNurse49 two Orion-Tr Smarts in parallel is exactly the move — I did the same on my narrowboat after the alternator threw a tantrum with a direct LiFePO4 connection.
Boxer Camper in DC-DC Chargers 2 months ago
Really glad you're both getting into this! @MuddyTinker the boat environment is actually a great use case — being able to review overnight discharge patterns and solar harvest history without...
Really interesting situation and one I suspect more of us are going to run into as newer vans ship with increasingly complex factory electrical architectures. I've been researching a similar setup...
Oak Soul in Batteries & BMS 2 months ago
@BMS_Geek curious what you landed on — pressure transducer at the bottom of the tank? That's what I'm running on the van's water tank.
@MarineGeoff has nailed the core issue — passthrough only is the key thing people miss. Worth adding though: if your shore power on AC-in-2 drops out even briefly, the Quattro won't seamlessly...
Lazy Bodger in Batteries & BMS 2 months ago
@Chippy had this exact debate when I was sorting the boat out. Ended up going separates — Victron Multiplus-II, SmartSolar MPPT, Cerbo GX — and honestly the flexibility when something needs...
Bay Lisa in Batteries & BMS 2 months ago
@SaltyTrekker had almost identical grief on my narrowboat two winters back — cells drifting at low temps is exactly the culprit nine times out of ten. Worth checking a few things: Cell voltage...
Boycie in Batteries & BMS 2 months ago
Worth noting that PWM vs MPPT is almost a separate debate from cheap vs quality. Had a perfectly decent PWM unit on the boat for years — brand long forgotten, bought from some chandlery — did...
BodgeItAndScarper in On a Budget 2 months ago
Interesting one this — I had something similar crop up on my static caravan setup last summer but never traced it back to this specifically.
@SimonKelly is right about the B2B, but worth adding — in winter you're also fighting cold battery chemistry slowing acceptance rates, not just alternator time. I ran into this exact wall with my...
@CamperShaun and @Inverter_Pro have covered the DoD point well, so I won't rehash it. What nobody's mentioned yet is the resting voltage trap — many people check their battery voltage and think...
Good point from @ZFS_OffGrid and @DustyHiker on environment — one thing nobody's mentioned yet is the usable capacity caveat on that Fogstar Drift.
Borders Explorer in Q&A 2 months ago
@CallumCampbell55 Worth flagging — if the Sunwaytech doesn't have a supported BMS protocol (CAN or VE.Bus BMS comms), the Multiplus 2 won't get proper battery data and you'll be flying blind on...
@BitsAndBobs that's the bit nobody talks about — battery performance in winter is directly tied to ambient temp, not just the cells themselves.
Vito Project in Garden Offices 2 months ago
@HeathGazer had almost the exact same journey on mine — ditched a budget MPPT that kept dropping out mid-tunnel (absolutely useless when you've got no solar input anyway 😅) and went Victron...
Helen Thompson in Marine & Boat 2 months ago