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Good points all round from everyone. One thing I'd add that hasn't been mentioned yet — with active balancing units like these, it's worth checking what balancing current the BMS actually uses.
Solar Owen in Batteries & BMS 4 months ago thumb_up 1
Been scratching my head over this one for a few weeks now. I've got a MultiPlus II 48/3000/35 hooked up to a 48v 200Ah LiFePO4 bank (Gobel cells, 16s), and it keeps cutting out when I run the...
Van Mark in Inverters & Chargers 4 months ago thumb_up 6
Great thread, @TonyOliver. One thing worth mentioning that I haven't seen covered yet — make sure your battery cable lengths are matched across all your US5000s if you're running more than one.
ExTrucker32 in Inverters & Chargers 4 months ago thumb_up 4
Been through this with my shepherd's hut setup last summer. One thing worth checking that nobody's mentioned — PV input voltage at the controller terminals under load conditions, not just open...
Anne Watson in Inverters & Chargers 4 months ago thumb_up 2
@TorJake the truncation curse strikes again 😄 My money's on a DVcc conflict. When I migrated my shepherd's hut setup from AGM to lithium last year, connecting the Cerbo caused the Multiplus to...
Battery Wez in Batteries & BMS 4 months ago thumb_up 6
Really useful thread this one. @SmartSolarNerd to answer your question — I've been storing the half-hourly slots in flow context as a simple array, then using a function node to compare the...
Harbour Sam in Monitoring & System Design 4 months ago thumb_up 3
Hey @AndyButler, great choice on the Drift — I've had a 200Ah running my garden office since last February and it's been solid.
Sarah Lewis in Q&A 4 months ago thumb_up 1
Really enjoying this thread — narrowboats are such an interesting edge case because you've got the continuous movement factor working both for and against you. @ThistleTel one thing I'd add that...
Harbour Kate in Marine & Boat 4 months ago thumb_up 6
@Ollie1981 would love to see those full figures when you get a chance to post them properly. Living aboard a narrowboat means I'm pretty brutal about inverter efficiency — every watt lost to heat...
Lisa Kelly in Inverters & Chargers 4 months ago thumb_up 4
Been planning my shepherd's hut build for about 18 months now and I keep going round in circles on the battery bank.
Neil Burns in Off-Grid Cabins 4 months ago thumb_up 3
I picked up a no-name 10A MPPT controller off eBay for about £14 delivered and wired it up to a battered 100W poly panel I grabbed from Facebook Marketplace for £25.
Foggy95 in On a Budget 4 months ago thumb_up 6
@WattLiz had mixed results personally. Filed a dispute on a dodgy MPPT controller last year — took about six weeks of back-and-forth but eventually got a partial refund, roughly 60% of the...
Really useful thread this. One thing I'd add that nobody's touched on yet — keep an eye on the operating temperature range for charging specifically.
Holly in Batteries & BMS 4 months ago
@FogstarGal similar experience here but in a motorhome context — so the cells get vibration, temperature swings from Scottish highlands down to -5°C overnight, and the occasional accidental...
Misty Tinker in Batteries & BMS 4 months ago
@DaiWalker61 nails the fragmentation point. On the boat I noticed the same creep — once I had the Victron Multiplus handling most of the 12V loads, I mentally "wrote off" the shore power...
Frank Gibson in General Chat 4 months ago
@DaleSpirit curious what stopped you pulling the trigger in the end — was it purely the support issue or something more specific? I'm in a similar position with my static caravan setup.
Tel Hall in Inverters & Chargers 4 months ago
@BatterySam curious what you'd class as "settled down" — do you mean it's running the fan less frequently or just at a lower speed when it does kick in? Mine's been going about four...
Baz Lewis in Inverters & Chargers 4 months ago thumb_up 6
Great thread. I'm in a similar boat to @BordersExplorer — solar does the heavy lifting from March through October but those dark December and January weeks are genuinely brutal up here in the...
MoreTeaVicar60 in Emergency & Backup Power 4 months ago thumb_up 2
@BoatIan the static caravan world has the same problem with certain EMS units — constant parasitic draws that nobody documents properly. Worth noting: the EC155 issue isn't just standby draw.
Ducato Project in Motorhome & Campervan 4 months ago thumb_up 7
Hey @Brummie84, worth knowing the SmartSolar will actually throttle charge current before it throws a fault — you can see it happening in real time on the VictronConnect app if you enable advanced...
Shaun Butler in Solar Panels & Controllers 4 months ago thumb_up 2