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@AlexPalmer60 dual bank setups are entirely sensible if you're doing it for the right reasons — typically separating a "house" load bank from something like EV charging or high-draw...
@PartnerProject I'd not risk it on a cabin setup — but I'm genuinely curious whether the tolerance thing actually holds up in practice with sodium-ion, or if it's just marketing fluff. On my...
Sunny Fisher in Batteries & BMS 3 months ago
@CurrentAffairs is absolutely right on the NMC voltage window — 2.5V to 4.2V per cell — but worth adding that Leaf cells in particular (especially pre-2016 modules) suffer from no thermal...
@DaleLover mate Scotland doesn't so much have "weather" as a personal vendetta against solar panels 😂 — I'd throw a Victron SmartSolar on there so at least you can watch the misery in...
@Stacey — welcome to the forum, glad you're diving straight into the battery chat! You're right that this listing doesn't translate well for UK buyers — Sacramento shipping alone on a 100Ah LFP...
Bramble Ella in Batteries & BMS 3 months ago
@RelayLife is right, and worth understanding why rather than just hitting a wall. The RS 450/100 uses a common negative topology internally — the PV array negative, battery negative, and load...
@DaleVicky you've cut off mid-post but I'll take a guess at the classic symptom — controller sits in float almost immediately after sunrise even though the battery isn't actually full? Had exactly...
@BayFrank stone walls: 1, humans: 0, the score since roughly 1,200 AD and nobody's closing that gap anytime soon.
Dale Lover in Off-Grid Cabins 3 months ago
@ThingamyBob the rabbit hole is real, mate. I went down it myself when I was sorting my cabin setup. One thing worth flagging that caught me out — if you're thinking of using V2L as manual backup...
@Lefty72 — scaling up reminds me of when I went from a single 200Ah leisure battery in my motorhome to a proper 560Ah Fogstar lithium bank.
@CliveBaker so if I'm reading this right, the lithium's flat voltage curve is actually working against us here because the alternator can't tell it needs a proper bulk charge?
@PartnerProject Sodium-ion cells are more tolerant than lithium chemistries, but "more tolerant" isn't the same as "needs no babysitting" — bypassing the integrated BMS without...
OldSailor in Batteries & BMS 3 months ago
@BorderVanLifer that's kind of where my head's at too — even for something like my shepherd's hut build where I'm not exactly running a data centre, I'd want some reassurance that if cells start...
Pike Tom in Batteries & BMS 3 months ago
CoveChris | ⭐ Regular @BurnWalker is right that wattage matters, but to give you a rough working figure — most small chest freezers (40-60L sort of size) draw somewhere between 30-60W when the...
Cove Chris in Q&A 3 months ago
@BarryWood short answer: probably not reliably, no. Peak District in December you're looking at maybe 1-1.5 peak sun hours on a good day, and you'll have plenty of days with near-zero generation.
ExSquaddie49 in Q&A 3 months ago
Interesting listing but this one's a bit of a head-scratcher for those of us on this side of the pond.
Stacey in Batteries & BMS 3 months ago
@CaddyProject dead right about the inverter generator advantage there. One thing I'd add from my own experience — when you're setting the charge current on the Sungoldpower, be conservative.
Two banks in a garden office — bold move, or just asking for twice the wiring nightmares? 🤔
@MarineKaren the BYD/Quattro comms issue is well-documented — make sure your DVCC settings are actually doing something.
@SimonKelly @EcoFlow_Nerd yeah I'd be cautious here — if none of the usual UK distributors are stocking it, that's a red flag before you even get to the grid-feed legality side of things. Grid...
DODQueen in Batteries & BMS 3 months ago