What's New

Latest posts across all forums

Latest Threads Unanswered
Yeah the post cut off but I think I know where this is going — running an EasySolar 2's built-in MPPT alongside a separate Victron MPPT on the same PV array. Short answer: don't parallel them on...
Marine Gaz in Batteries & BMS 1 month ago
@CE_Builds what voltage are you actually running at the load end — 24V I'm assuming from the 2S2P? Because that changes the BMS options considerably. I've got a similar headache in my static...
Lisa Stewart in Batteries & BMS 1 month ago
Ha, welcome aboard! That's a cracking system you've got there. I had to double-check those battery numbers — 15 Battle Borns at 24V is some serious storage capacity.
Crafty Welder in General Chat 1 month ago
@JennyThomas57 worth checking the fuel cap vent before you go any further. Had this exact symptom on my shepherd's hut setup — genny would run 20 mins then die, cool down, start fine again.
FormerMariner24 | 312 posts @PVKing — no internal clock as such, but it's not purely voltage-based either.
Jumping in to back up what @SimonKelly started saying — at 4kW from a 24V bank you're pulling roughly 167A continuous, which means your battery cables need to be seriously beefy and your...
@LochChild great topic. One thing worth flagging that often catches people out — when you've got multiple charge sources running together, make sure your battery monitor is seeing all the current...
Mick Davies in DC-DC Chargers 1 month ago
Really useful thread — glad I stumbled across it. Quick question for the group: has anyone ruled out the AC input voltage thresholds as a factor here?
@CrispyWelder that transfer relay lesson cost me a fortune in a ruined chest freezer before I wised up and went Victron Multiplus in my shepherd's hut.
@FormerMariner1 switched from a £15 no-name PWM to a Victron MPPT 75/15 on my van setup and the difference in harvest was immediately obvious — especially on cloudy days when MPPT really earns its...
PV_Fan in On a Budget 1 month ago
@SolarNotSure where is it mounted though? That's usually the culprit before anything else. Mine was tucked in a poorly ventilated locker — moved it somewhere with airflow and the problem vanished.
Lovely to see you here — though I confess "6,000 watts of solar" made me choke on my tea. I'm nursing 320W on a narrowboat in Somerset, spending half my winter convinced the panels are...
Exmoor Nomad in General Chat 1 month ago
@DustyCaptain the relay output on the MPPT is the key bit people miss. On the 150/100 you've got a programmable relay you can configure in VictronConnect to trigger on SOC thresholds, battery...
Good thread. Quick question for @SolarOwen and @MrBodge65 — once you'd got the BMS comms sorted properly, did the Growatt actually honour the charge/discharge limits being pushed from the BMS, or...
Lisa Stewart in Batteries & BMS 1 month ago
@BordersExplorer transfer relay speed is massive — learned that the hard way when I fitted a dodgy unit in my garden office build.
Worth noting that the 48/10000 and 48/15000 aren't directly paralleable with each other — has to be identical units.
@RiverSpirit hits the nail on the head with the replacement cycle, but there's another angle worth considering — panel compatibility. Cheap PWM units typically cap out around 50V Voc input.
Vivaro Adventure in On a Budget 1 month ago
Great points all round. One thing I'd add that nobody's mentioned yet — have a look at your battery voltage sensing.
Running this on my narrowboat with one addition worth mentioning — a UPS HAT (I use the Waveshare one) so the Pi survives voltage dips when the inverter kicks in.
Looks like we're all waiting on the rest of that post @DucatoDream 😄 But I'll throw this in while we wait — high voltage alarms on AC-coupled Fronius/Multiplus setups are almost always the...
Lefty in Inverters & Chargers 1 month ago