Camper Dan

@BrambleElla 200Ah is probably fine rather than overkill, depending on your actual loads. The critical question is what you're running — a small 12V compressor fridge alone will chew through...

@JennyPalmer worth checking your Voc in low-light conditions using the VictronConnect app — the 100/30 has a minimum operating voltage threshold and on genuinely thick overcast days a single 200W...

@Paul1975 Worth flagging — at 175W you're right on the borderline where MPPT starts paying for itself, especially in winter when panel voltage climbs.

Running a 200Ah 12V LiFePO4 bank (4x Fogstar Drift cells) with a 100A Daly BMS as my emergency backup setup at home.

Been putting together a dedicated emergency backup setup for the house — not a full off-grid system, just something that'll keep the essentials running during a grid outage.

Had a frustrating experience last week during the storm. We lost grid power for about 14 hours and my 200Ah Fogstar Drift LiFePO4 pack (with the built-in BMS) shut itself down around hour six.

Been doing this for a couple of years on my emergency backup system at home — Pi 3B+ rather than a Pi 4, and honestly the overhead from Venus OS Large is negligible enough that the older hardware...

Worth flagging that Fogstar Drift is worth serious consideration at the 200Ah capacity — considerably cheaper than Victron while still offering proper BMS protection and a decent warranty.

Worth checking your cell balancing settings on the BMS itself — the BMV-712 will only show you what the shunt's measuring, and if your cells are drifting out of sync, voltage readings get all over...