SOC_Nerd

SOC_Nerd

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@SOC_Nerd

Weekend warrior from Staffordshire. Fiat Ducato L4 build in progress.

Staffordshire Joined Feb 2024
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Overview Reviews (0) Posts (31)
Shed office build - worth going for 3 phase or overkill for just a couple of monitors and a kettle?
Agree with the above. Single phase, done properly, will be absolutely fine. What actually matters for a shed office is the cable run distance from your consumer unit.
in Garden Offices 2 weeks ago
Simulate CAN BMS to check Inverter compatibility?
@HazelSoul done exactly this when I was integrating my Fogstar Drift with a Multiplus II. Grabbed a Raspberry Pi and ran dbus-spy alongside a CAN hat — lets you sniff what a real BMS is actually...
in Inverters & Chargers 3 weeks ago
Request for "Grid setpoint" widget
Been down a similar rabbit hole recently after the VRM newsletter dropped and got me poking around the widget library again.
in Batteries & BMS 3 weeks ago
For Sale l Upgrade Your Home Energy Storage with XIHO 16kWh LiFePO4 Battery Pack (51.2V 314Ah)
Seen a few of these XIHO units floating around lately and honestly the specs look decent on paper — 51.2V 314Ah is a chunky bit of storage for the money.
in Batteries & BMS 4 weeks ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@WheresMeWires31 quick maths — 200Ah at 12V is 2.4kWh usable (assuming you're not hammering a lithium below 20% SOC, so call it ~1.9kWh realistically).
in Q&A 1 month ago
Basen Green V3 Battery, BT works, BMS is active, No RS485 or display data.
Had a similar headache with a no-name LiFePO4 pack a while back. BT connecting fine but RS485 absolutely dead in the water.
in Batteries & BMS 1 month ago
Swapped out the old Victron MPPT on the narrowboat – few questions about the new settings
Right, so I finally ripped out the old 75/15 and slapped in a 100/30 on the boat last weekend. Difference is already noticeable — panels are actually doing something useful before 10am now instead...
in Marine & Boat 1 month ago
Anyone else using cheap Chinese MPPT controllers or is it false economy?
SOC_Nerd | 2,341 posts | 🔋 Off-Grid Grump The efficiency "looking dodgy" is the tell. Most of these units overstate their own tracking performance and you'd never know without...
in On a Budget 1 month ago
Help to resolve High Cell Voltage warnings
@VanLee what battery are you actually running? Makes a massive difference here. LiFePO4 and lead-acid want completely different charge profiles and Victron's defaults aren't always right out of...
in Solar Panels & Controllers 2 months ago
Anyone else notice their electricity bill went up even after going off-grid partially?
Yeah, this catches a lot of people out and it drives me absolutely mental seeing the same confusion repeated every few months on here. The standing charge is the killer nobody talks about.
in General Chat 2 months ago
12V 375W phoenix inverter overload at 125 W
@DODGuy is on the right track but I'd add — check your cable gauge and connection resistance too, not just battery voltage. I had this exact nonsense with my Phoenix 375 last winter.
in Inverters & Chargers 2 months ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@SueThompson depends heavily on what "overnight" means to you and how efficient that freezer actually is.
in Q&A 2 months ago
Victron MultiPlus keeps switching to float too early — anyone else had this?
@OffGridJack 2 hours is conservative but not wrong. The thing people miss is that absorption time is basically irrelevant if you've got your tail current set properly.
in Inverters & Chargers 2 months ago
Victron mppt metrics exporter for pppprometheus , grafana
@StormyDrifter yeah the BT polling is a nightmare — discovered that the hard way when my Prometheus scrape interval kept clashing with the Victron app's own BT connection and one of them would...
in Monitoring & System Design 2 months ago
Lynx bms disconnects on low cell voltage but battery has 52V
@Thommo already covered the obvious bit so I won't rehash it. Worth checking whether your cells were properly top-balanced before assembly.
in Batteries & BMS 3 months ago