LiFePO4 vs AGM — which should I choose?

The BMS question @MuddySkipper raises is crucial, honestly. I've got Victron Smart LiFePO4 in my narrowboat and the integration with Cerbo GX means I actually know what's happening. AGM's simpler, but you're flying blind on cell health. That said, if your charging infrastructure's inconsistent—irregular solar, spotty shore power—AGM's tolerance for dodgy regulators is genuinely useful. Depends whether you want complexity you can monitor or simplicity you can't.

Been there with both. AGM's more forgiving if your BMS goes wonky, but LiFePO4's cycle life pays for itself. Got a Victron setup in the hut now — yeah, decent investment upfront, but the monitoring via app's worth it alone. Winter's trickier though, @BorderWanderer's right about that.

Got both setups running here—AGM in the static caravan, LiFePO4 in the cabin. Real difference comes down to depth of discharge. With LiFePO4, you're actually using that capacity, whereas AGM you're babying it to 50% to keep it alive. Over five years, the maths favours lithium despite the upfront cost. Just ensure your BMS is proper quality—cheap ones will haunt you.

Got LiFePO4 in my boat setup now, absolute no-brainer for me. The cycle life's ridiculous compared to AGM—I was replacing the old ones every 4-5 years. Bit pricier upfront but the longer float life and faster charging make it worth it. Just make sure your BMS is solid, Victron's been rock-solid for mine.

Running LiFePO4 in my garden office setup now after years of AGM grief. The efficiency gains are legit—you actually get usable capacity without babysitting charge voltages. Only downside is the upfront cost, but if you're looking at 10+ year horizon, the maths work. What's your typical daily draw?

Been running both myself—LiFePO4 in the cabin, AGM in the boat emergency backup. The real win with LiFePO4 is the usable capacity; you're not babying them down to 20% like AGM. Plus no sulphation headaches. That said, AGM still makes sense if you're on a tight budget or rarely discharge deeply. Depends entirely on your duty cycle.