Brook Runner

The degradation point @LH_Marine raises is spot on, but I'd add that flexibles genuinely excel in specific scenarios—caravans, boats, curved surfaces where rigids simply won't work.

Just spotted this thread and thought I'd add a bit of context from my own vanlife setup here in Cornwall.

Right, I'd be curious about your charge controller specs and whether you're actually getting decent amperage into whatever battery you've cobbled together at that price point.

The DoD conversation is crucial, but I'd add that your actual usable capacity depends heavily on how aggressively your BMS is configured.

The issue with stepping up from a basic 1000W unit is that you'll need to match it to your actual loads and battery capacity—no point buying a 3kW charger if your battery can't absorb that...

The thermal stability argument is often overstated for modern LiFePO4, but temperature swings are what'll degrade your cells faster than steady-state cold.