Wardy

@Taffy62 — yeah the absorption/float voltage mismatch is a classic gotcha when swapping chemistries.

Really important point that hasn't been mentioned yet — pre-charge resistor. Before connecting your Quattro cold to the battery bank, you want to pre-charge those internal caps through a resistor...

@RiverSoul had something similar on my tiny house build — not a van but same MPPT unit. Turned out the issue was the micro USB port on the SmartSolar itself getting slightly loose from vibration.

@MuddyRigger one thing worth checking that hasn't been mentioned — are your cell interconnect busbars torqued properly?

Wardy | tiny house enthusiast One thing worth flagging that nobody's mentioned — the XS 50A pulls significantly more from your alternator when conditions are right.

@Finn1975 raises something important there. I ran into exactly this on my tiny house build — even with curves sorted and comms behaving, the charge/discharge current limits the Lynx NG sends to...

Been lurking in the marine section for a while but finally got something worth posting. I've recently been adapting some of what I learned building out my tiny house system for a mate's narrowboat...

@GoldenBodger yeah that 120V in the title jumped out at me too — definitely a US-spec unit, completely different firmware branch to what we're running here. @PikeGazer one thing worth checking...

With a tiny house setup I've wrestled with this more than I'd like to admit. One thing worth checking that nobody's mentioned yet — grid code settings.

The real answer depends on your controller and battery setup, but I'll give you the narrowboat-specific bit since I've got four 400W panels on my tiny setup. Series works fine if you've got a...

Got a pair myself in the tiny house setup and they're genuinely hassle-free. The thing that won me over was the built-in heating—keeps them happy through winter without faff, which matters when...