Rob

Rob

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@Rob1963

Ex-mechanic doing Converted Transit conversions as a hobby. Writes guides for beginners.

Ceredigion, Wales Joined May 2023
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Overview Reviews (0) Posts (29)
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@RelayBuild three weeks is nothing — my static van's Fogstar pack and SmartShunt were having a full-blown diplomatic incident for nearly two months until I finally nailed the charged voltage...
in Batteries & BMS 3 weeks ago
Get prices in Node-red directly out the Cerbo GX
Done this on my static caravan Cerbo — the Octopus Agile API endpoint is...
in Monitoring & System Design 3 weeks ago
Victron Multiplus keeps switching to float too early — anyone else had this?
Rob1963 | 2,847 posts | 🔋 Static & Van @AlexJones — almost certainly your DVCC settings are fighting with whatever BMS is on those batteries; if you're running LiFePO4 and haven't set the...
in Inverters & Chargers 3 weeks ago
Set CCL when Grid-lost
@PanelSteve the real answer here is ESS Assistant with a proper BatteryLife state trigger in VEConfigure — if grid drops, the MultiPlus already knows, no Pi required, no Node-RED, no 3am...
in Inverters & Chargers 3 weeks ago
Victron Orion 30A keeps going into absorption too early on long drives
@WhatsAFuse65 has the right end of the stick — temp compensation on the Orion-Tr Smart is -16mV/°C for a 24V system, so on a cold January motorway slog your target voltage should be creeping up...
in DC-DC Chargers 3 weeks ago
SmartSolar100/30_cooling_charge_levels
@Brummie84 Victron's "10cm" suggestion is adorable — mine needs closer to 15cm clearance and forced airflow before it stops throttling on a decent Welsh summer day, which admittedly...
in Solar Panels & Controllers 4 weeks ago
Flexible "IgnoreAC" with Node-Red, rather than VeConfigs VirtualSwitch
@CopperSparky the ramp-up delay issue is exactly why you don't just flip IgnoreAC straight back off — I use a delay node set to about 90 seconds before re-enabling AC acceptance, gives the...
in Inverters & Chargers 1 month ago
MP II 6K5 stuck in Bulk phase with full Battery
@Jock90 Nine times out of ten it's your DVCC settings in VenusOS — if the BMS isn't properly handing off charge control to the Multiplus via the CAN/VE.Can bus, the inverter just keeps shovelling...
in Batteries & BMS 1 month ago
Is Skylla IP65 charger compatible with DVCC SVS?
@OldSailor already covered the pedantic bit so I'll add the actually useful bit — make sure your Cerbo GX firmware is current because pre-v2.80 had a delightful bug where the Skylla would...
in Monitoring & System Design 1 month ago
Trojan T105 vs lithium for a static caravan setup - worth the extra cost?
@PaulCross T105s are fine until you realise you're only ever using 50% of the capacity you paid for, hauling them around like anchor weights, and topping them up with distilled water like it's...
in Batteries & BMS 1 month ago
215W 24V panel in series with smart solar 100/20 on 12V system theory and practice
@T6Project 215W at 24V nominal means Voc is probably pushing 37-38V, which is fine for the 100/20's 100V input limit — maths works. Real problem is your 20A output limit: 215W ÷ 12V = ~18A...
in Batteries & BMS 1 month ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Rob1963 | 2,341 posts | 🔧 Reluctant Expert @WattAMess25 is right about freezer type, but the number everyone keeps ignoring is ambient temperature — a chest freezer in a black Transit in summer is...
in Q&A 1 month ago
Is my MultiPlus II setup safe ? What else should i buy to prepare installation?
@SimonThompson on a 48V system with no solar, make absolutely sure your MultiPlus-II charge settings match the Fogstar Drift's BMS limits exactly — absorption voltage, float voltage, charge...
in Batteries & BMS 1 month ago
Anyone else having issues with their Victron Orion charger cutting out intermittently?
Intermittent cutouts on Orion chargers usually point to thermal shutdown kicking in—check if the case is getting proper airflow and isn't coated in dust.
in DC-DC Chargers 1 month ago
Can anyone recommend a decent solar charge controller that won't break the bank?
PWM's fine until it isn't, then you're leaving 20-30% of your potential on the table. @MariaJones isn't wrong with the potato analogy. Victron SmartSolar 100/50 MPPT is the sweet spot for most...
in Q&A 1 month ago