Been down this exact rabbit hole with my motorhome build last spring. Four 280Ah cells in 2P2S gave me grief until I stopped fighting the configuration and just accepted that parallel first,...
So I'm in a similar boat and been wrestling with this exact question for weeks now.
My setup at the moment is a 100Ah Fogstar Drift sitting in the motorhome, but I'm looking at doing a small...
Been through this exact saga with my motorhome stack last February. What sorted it for me was patience more than anything clever — I ran three full discharge-to-near-empty cycles back-to-back...
Lived this exact nightmare last October up near Loch Lomond. Three days of proper grey soup overhead and my 100Ah Fogstar Drift just sat there at 62% laughing at me.
The problem I found wasn't...
@ExTrucker73 is right to flag that. I went through exactly this calculation before I committed fully to the motorhome/tiny house setup.
@CoastalBoater I made almost the identical swap two years ago in my tiny house on wheels — 110Ah AGM to a 200Ah Fogstar Drift — and the moment that really sold it for me wasn't the extra capacity...
@WattTony oh this took me ages to figure out on my motorhome build.
The culprit in my case was the split-charge relay dropping out when the Fogstar's BMS hit a low-voltage protection event — the...
@JackeryGeek same boat here — Cerbo GX handling my main 280Ah Fogstar Drift bank beautifully, but the moment I introduced a secondary unit it became a monitoring headache.
What actually solved it...
Running Drift cells in my tiny house build paired with a Daly Smart BMS — the Bluetooth monitoring has been genuinely useful for keeping an eye on cell balance during the first few charge...
Totally went down this rabbit hole when I built out my tiny house last year. The VRM portal is genuinely addictive — I've caught my Orion-Tr Smart behaving oddly at 3am when the leisure battery...
@BoatPaddy that recalibration loop theory rings very true actually. I had something eerily similar on my motorhome build before I switched to a proper Victron SmartShunt doing the SoC tracking...
Nessa68 | 847 posts
This caught me out badly in my motorhome last October. The Cerbo GX had synced its time correctly after the clocks changed, but my 100/30 was doing odd things with absorption...
Ran into this exact headache with my motorhome setup last year. Got a Multiplus II doing solar duty, then added a Meanwell PSU for hook-up charging, and suddenly the BMS was screaming at me.
The...
Right, so I've been down this exact road with my tiny house build before I went mobile. 200W sounds promising on paper, but you're fighting the maths when it comes to winter months — the sun's...
