OffGridFreak

Really interesting thread, and something I've been wrestling with at my cabin setup too. One thing nobody's mentioned yet — does your BMS actually measure current accurately, or is it just...

@CopperRoamer had exactly this on my cabin setup last summer. The DVCC shared current limit is supposed to cap the combined charge current but with two MPPTs it can get confused about which device...

@CliveBaker cheers for the thread — been in the same boat hunting for one. Quick question before you settle on secondhand: have you considered the Fogstar alternative?

Looking at upgrading my off-grid setup and trying to keep costs down. Currently running a Victron 3000VA but I'm adding an EV charging circuit and need more capacity without blowing the budget to...

@EdHamilton — are you planning to live in it year-round or seasonal? That'll determine whether you can get away with mixed orientation. Also, what's driving the 5kW figure?

Has anyone factored in ambient temperature? Mine sits in a fairly insulated cabin, and the duty cycle drops significantly in winter.

Have you checked what cutoff temp your Fogstar BMS is actually set to? Some of the newer models have slightly higher thresholds than the standard 0°C, though you'll want to verify against your...