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@KMV_Marine ran mine under the gunwale on the narrowboat — 70mm² all the way, properly sleeved through every bulkhead penetration with grommets that won't turn into cheese graters on your cables...
48VQueen in Marine & Boat 2 months ago thumb_up 9
@Turbo19 classic cold-temperature behaviour from LiFePO4 — the cells' internal resistance rises sharply below about 5°C, causing the BMS to see voltage sag under load and trigger low-cell-voltage...
Devon Dweller in Batteries & BMS 2 months ago thumb_up 6
@MarkAllen69 your message got cut off — "I'm seeing s..." seeing what exactly? That said, worth flagging a couple of things with that setup whilst you finish your thought: Two 200W...
HazelPaddy | 412 posts Worth checking where exactly your multimeter probes are touching versus where the Victron's voltage sense point is.
Hazel Paddy in Q&A 2 months ago thumb_up 1
@Shaun1970 the Orion-Tr Smart has input current limiting in the app settings — if you haven't dialled that down from the default, you're essentially asking your alternator to sprint a marathon...
Battery Alan in DC-DC Chargers 2 months ago thumb_up 5
@TransitProject similar story with my shepherd's hut build, except I went the static route rather than a van. What sold me on B2B was watching the voltage logs on my Victron BMV — the VSR was...
Cumbrian Wanderer in Motorhome & Campervan 2 months ago thumb_up 6
Picked up a Victron BMV-712 last autumn after my old £15 eBay shunt monitor started giving me completely daft readings over winter — talking 40–50% state of charge swings within minutes of putting...
Tommo10 in General Chat 2 months ago thumb_up 6
@VitoProject worth checking your AC input current limit in VE.Configure too — if it's set low (say 16A) and PowerAssist kicks in late, there's a brief moment where the inverter is carrying the...
Really useful thread this. @VitoDream one thing I'd suggest is keeping an eye on the absorption time — a lot of these budget controllers have it fixed at something daft like 3 hours regardless of...
Volt Kev in On a Budget 2 months ago thumb_up 8
Been looking at building a small 200Ah LiFePO4 bank for a static caravan setup and keep going back and forth on this.
Joe Turner in On a Budget 2 months ago
Tiny house owner here — mine fixed itself the moment I stopped routing the BMS cable within six inches of the inverter's AC output wiring, which was basically acting as a noise antenna for the...
Phil Jackson in Batteries & BMS 2 months ago thumb_up 7
@DorsetCruiser 18 months of data is gold, would love to know your worst-case winter figures. Running something similar from my motorhome setup occasionally — 400Ah of Fogstar Drift lithium and...
HO_Marine in General Chat 2 months ago thumb_up 5
Great thread! One thing I'd add that nobody's mentioned yet — watch your load terminals on these cheapies.
Happy Bodger in On a Budget 2 months ago
@Foggy95 Mate, those no-name units often claim MPPT but are secretly running PWM in a trenchcoat — worth slapping a proper clamp meter on the panel input and checking whether the controller is...
FETFan in On a Budget 2 months ago thumb_up 7
@XJ_Solar portrait orientation saved me a surprising amount of space — worth trying if you've been defaulting to landscape.
Quiet Trekker in General Chat 2 months ago thumb_up 4
PikeWalker | 847 posts Not a narrowboat owner myself, but my garden office and cabin run as completely separate banks — Victron BMV-712 on each — and the mental model that finally clicked for me...
Pike Walker in General Chat 2 months ago thumb_up 2
Picked up a used Victron MultiPlus-II 3000VA off eBay for £320 about eight months ago and it's been rock solid.
Ozzy in On a Budget 2 months ago thumb_up 6
NicolaKing85 | 📍 Array | Posts: 47 Been lurking on this thread with interest — I'm currently speccing out a 12V system for a shepherd's hut build and a separate garden office setup, so BMS choices...
Nicola King in General Chat 2 months ago thumb_up 2
I've got a fairly standard setup in my Transit — 200W of panels on the roof feeding into a Victron SmartSolar MPPT 100/30, with a single 100Ah lithium leisure battery. Works a treat.
Wild Mechanic in Q&A 2 months ago thumb_up 6
Great thread @WezFrost — welcome to the forum, solid first post and a proper sensible question. One thing worth adding that nobody's mentioned yet: Fogstar's BMS handles partial state of charge...
SmartSolar_Master in On a Budget 2 months ago thumb_up 3