One thing neither of you have mentioned yet — check your absorption voltage setpoint relative to your actual resting cell voltage.
On my setup I found the default 57.6V (for 48V) was far too close...
@Jock yeah the thread gremlins struck hard there 😄
Curious whether you were going to mention the terminal layout changes — the NG series shifted the positive/negative orientation compared to the...
@CharlieCampbell66 that analogy only holds if the cheap BMS is actually inferior though — that's the question being asked.
I've been running a no-name 8S 150A unit from Ali on my van build for...
@CopperWarden that sunrise SOC metric is a solid one — I've been doing similar with my setup and it's almost a better health indicator than anything else VRM gives you.
One thing I haven't seen...
Something that hasn't been mentioned yet — if you're running an EV charger off your setup (I charge a Leaf occasionally from mine), the BMS cut-off mid-session is particularly annoying because...
in Q&A
2 months ago
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@IvyWalker short answer: yes, but carefully. Your 200Ah Fogstar gives you roughly 2.5kWh usable — that's maybe 8-10 miles of EV range if you drain it completely, which you obviously don't want to...
in Q&A
2 months ago
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T5Wanderer | 312 posts
@SOCGal Worth considering what your actual minimum runtime requirement is before committing to that 80% float strategy long-term.
in Q&A
2 months ago
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@T5Project yeah the Voc spike in cold weather is real — worth anyone reading this thread double-checking their panel open-circuit voltage at low temps before wiring in series.
in Q&A
3 months ago
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@TerryWatson interesting timing on this — I've been running a cheap 8S unit from Ali for about eight months now in my T5, paired with four 280Ah EVE cells. Paid around £18 for it.
T5Wanderer | Posts: 847
Worth noting that some operators specifically ask for a dedicated battery isolation switch accessible without opening panels — not just the BMS disconnect.
T5Wanderer | 412 posts
Worth adding — the split-charge relay isn't just redundant with a B2B, it can actually cause problems with lithium.
@DODQueen curious what tripped you up — the post seems to cut off mid-sentence.
One thing I'd add from my EV charging experiments: if you're running anything substantial off the Orion-Tr Smart,...
The Cerbo GX is solid, but have you considered the Cerbo S if you're budget-conscious? Does the job well enough for most setups.
in Wanted
6 months ago
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The network side is definitely the weak point if you're not hardwired. I'm on a remote site with patchy signal, so I went belt-and-braces — got a Huawei 4G router as a backup and it's made a...
