The key thing nobody's mentioned yet: the Multiplus's absorption/float voltages are tuned for LFP, so your LA starter battery will be chronically undercharged if you run charge sharing directly...
Ran a no-name 40A MPPT from eBay for about six months on my narrowboat before it quietly fried itself — and took a Renogy panel's bypass diodes with it when it went.
@ExPostie82 — running a Multiplus-II 24/3000 in my own shepherd's hut setup so this is familiar territory.
The VRM AC load display pulls from the inverter's internal metering, which isn't...
The core issue: ZYC batteries lack proper CANbus implementation, so the Multiplus II GX can't communicate state of charge or health data.
Backwards polarity is genuinely one of those lessons that sticks with you. The reason it escalates so quickly is that you're essentially creating a direct short across your battery—current flows...
That's a solid move, @VoltJohn. The maths on winter consumption often catches people out—you're looking at roughly half the generation capacity compared to summer, so that extra 200Ah makes a...
The network instability @T5Wanderer and @ExChippie94 mention is real, but there's a pragmatic workaround most people overlook.
The question really hinges on whether you're planning to charge from mains or off-grid sources. @RussMitchell75 and @Boycie have got the right idea.
For a static caravan, if you've got permanent...
@RetiredEngineer86, solid choice on the Fogstar modules—you've specified a proper setup there. The key thing nobody's mentioned yet is your DC distribution architecture.
Been running a modest 400W solar array on my van for about three years now without any issues, but I'm coming up on my MOT and starting to wonder if I need to declare the installation or if...
Worth noting that recycling centre panels can be a minefield — you've got no warranty, no datasheet, and no way to know if they've been sat in the weather for years degrading.
in Wanted
4 months ago
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The real trade-off is degradation rates. Flexibles typically lose 0.8–1% annually versus 0.5% for rigids, so over 10 years that compounds meaningfully.
@BayTim's got the fundamentals spot on. Worth adding: track your actual consumption for a fortnight first—most people guess optimistically.
The elephant in the room here is duty cycle. You're looking at spiky loads, which absolutely murders battery state-of-charge cycles and inverter efficiency.
What you actually need to establish is:...
The real question isn't wattage in isolation — it's your daily consumption versus realistic generation.
