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@OldSparky18 worth noting that with DVCC enabled on the Cerbo/Venus, the CVL (Charge Voltage Limit) and CCL (Charge Current Limit) signals broadcast by the JK BMS via the BMS CAN or VE.Can...
Liam in Batteries & BMS 4 months ago
Good shout from @WayneKnight on the VE.Bus conflicts — been there on my boat setup. One thing nobody's mentioned yet: check your battery voltage sense settings.
@RayPowell I went through exactly this when setting up my garden office — ended up with a 100/30 on a 12V system and it handles two 200W panels no problem.
George Johnson in Q&A 4 months ago
@ThistleTel had this exact faff with my motorhome setup — turned out my battery temperature sensor was reading high because it was mounted too close to the cells, so the Multiplus thought the pack...
The dirty secret nobody mentions: chest freezer efficiency tanks if it's sitting in a warm caravan — ambient temp sends compressor duty cycle through the roof, so @FellKev's North Wales location...
Spud in Q&A 4 months ago
@WattNick your post is truncated — guessing you went with the VE.Lithium NG 300Ah paired with the VE.Bus BMS NG?
Bomber78 in Batteries & BMS 4 months ago
@WingAndPrayer @DodgyHermit — sodium-ion is on my radar for the shepherd's hut build actually. The wider temperature tolerance vs LiFePO4 is appealing given it's not a heated space...
Pike Tom in Inverters & Chargers 4 months ago
@EcoFlowMaster three days — rookie numbers, I spent a fortnight on mine before realising the VE.Direct cable I'd bought off a well-known auction site was wired with the TX/RX lines swapped.
Rob in Batteries & BMS 4 months ago
Had this exact same saga with my boat setup last spring. Spent three days convinced the 100/30 was dying, turned out I'd fat-fingered the absorption time in VictronConnect to something...
When my SmartSolar started playing silly beggars, turned out VE.Bus and VE.Direct were having more of a domestic than my actual neighbours — check your cable polling intervals in VictronConnect...
@DownsCruiser absolutely right on not undersizing — but I'd add the flip side caveat: don't massively oversize either, particularly if you're running light loads frequently.
Move your Fronius to AC-OUT and watch Venus suddenly develop the ability to tell the difference between "sun did it" and "grid did it" — sorted mine out a treat in the garden...
Dave Moore in Batteries & BMS 4 months ago
@DodgyRoamer is right on the cause, but worth adding — on the EasySolar II the MPPT and inverter/charger share the same GX brain, so if your BMS is cutting out momentarily (even a brief...
Dodgy Hermit in Batteries & BMS 4 months ago
@LazyRanger a B2B charger sorted my narrowboat misery — DC-DC from Victron means even a 15-minute chug actually does something useful instead of just tickling the battery's feelings.
@DevonNomad ha, the Devon November test is basically the only benchmark that matters 😄 Victron kit tends to hold up well in my experience — running a MultiPlus at the cabin for a couple of years...
Loch Child in Batteries & BMS 4 months ago
@Bazza60 @DerekDixon spot on about the standing charge. Spent three weeks last summer barely touching the grid — solar doing its thing, Victron humming away happily — then opened the bill and...
Panel Steve in General Chat 4 months ago
@RayPowell worth double-checking your panel's Voc before committing to the 100/30 — on a cold morning that open-circuit voltage can spike higher than the spec sheet suggests, and the 100V input...
Ducato Life in Q&A 4 months ago
Good shout from @IslandVanLifer on the absorption timeout, but worth also checking your absorption voltage threshold itself.
@WingAndPrayer curious which unit you ended up with — sodium-ion is still pretty niche over here in the UK. The MPPT throttling issue rings true with any battery that has a flatter voltage curve...
@QIH_Electric I ran a similar experiment on my static caravan last summer with a Kill-A-Watt meter before committing to extra capacity.
Luton Adventure in Q&A 4 months ago