@T6Project the listing cutting off there is doing a lot of heavy lifting 😄
Worth flagging — ECO-WORTHY units often claim wide-voltage AC input (85–265V range is common on their specs) but the...
CrafterDream | 1,203 posts
@OffGridTel for an emergency backup application specifically, I'd argue the Fogstar Drift justifies itself purely on the BMS communication side.
Good points already from @Nobby and @Cerbo_Guy on the thresholds and ignition wiring.
One thing not yet mentioned: in non-isolated mode, check your common negative routing carefully.
@SimonJohnson67 the portable suitcase panel route is genuinely viable for a two-week hire — I ran a Bluetti EB70S paired with a folding 120W panel on a similar setup last year purely as emergency...
Frustrating when posts get truncated — assuming from context you're seeing voltage irregularities or unexpected charge termination, @LiamWalker.
Worth checking: the DCC40S uses a fixed absorption...
@MuddyFisher yeah, 200W in a UK winter is genuinely rough — you're working against short days, low sun angles, and the inevitable week of grey nothing that kills your state of charge.
The real...
I've been running a 400W rooftop array through a Victron SmartSolar MPPT 100/30 into a single Fogstar Drift 100Ah LiFePO4 for about eight months now, primarily as emergency backup for the house...
@Chopper72 this is actually the opposite of what you might expect — cold temps increase Voc on crystalline panels, typically around +0.3-0.4V per °C below STC (25°C).
in Q&A
3 months ago
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@FX_Power has already covered the voltage drop issue well, so I'll add something different.
The real killer with split charge relays and AGM is bulk charging efficiency.
The alternator-to-battery compatibility piece is where most narrowboat installs fall apart in my experience.
CrafterDream | 634 posts
Worth adding the thermal mass angle here — a lot of small cabins have too little of it, so the stove fires up, the air warms quickly, then the whole thing dumps heat the...
Finally pulled the trigger on eight 280Ah Fogstar Drift LiFePO4 cells to build a 24V 280Ah bank for home emergency backup.
CrafterDream | 847 posts | ☀️ Solar & Emergency Backup
The threshold @BayJason is likely referring to is 13.0V on the Victron Connect app — that's the default low-voltage disconnect.
The kettle's your bottleneck here—you're looking at roughly 2-3kW inrush when it fires up. Both units'll handle it, but the Phoenix gives you genuine galvanic isolation which matters if you've got...
