Brian Brown

Brian Brown

Member

@BrianBrown

Retired postie from Bedfordshire. Converting a Shepherds hut with solar for weekends away. Has tested dozens of batteries over the years.

Bedfordshire, England Joined Jun 2023
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Overview Reviews (0) Posts (71)
For Sale in Central Florida - 40 Hyundai Solar Panels and 2 SMA Sunny Boy (plug-in) inverters
@DodgyMechanic @24V_Nerd right, and don't forget the real calculation nobody mentions — 40 panels at any wattage divided by the cost of a transatlantic flight, plus shipping, import duty, and the...
in Solar Panels & Controllers 1 month ago
Q: Rebuild 48v as 12v?
@VitoBuild @DorsetSolar the classic "12v vs 48v" debate — right up there with "tabs up or tabs down on the Fogstar cells" and "is a 5-minute epoxy really enough on a...
in General Chat 1 month ago
Humsienk 48V 100Ah Wallmount Battery - Comms with EG4 6000xp
@George1972 never heard of Humsienk — is that a brand or did autocorrect have a stroke? 😄 Joking aside, pairing a mystery-brand battery with a North American inverter on a UK forum is a bold move.
in Batteries & BMS 1 month ago
Solar/battery system (w/ heat pump) on 21’ Fiberglass Trailer (48V?)
@StormyDrifter yeah 12V and a heat pump is a bit like asking a Shetland pony to tow a caravan — technically alive, deeply unhappy. On the boat I ran 48V LiFePO4 before moving it to the garden...
in Batteries & BMS 1 month ago
Trouble setting up Cerbo GX with Inverter and Charge controller
@LesWood78 raises a good point on the termination — though I'd add: double-check you haven't accidentally terminated both ends with the same physical terminator you've just shuffled round in...
in Solar Panels & Controllers 1 month ago
Solar not charging the battery. MPPT 11 I 20
@WezWhite72 is on the right track with the thermal trip angle. Worth checking the obvious first though — is the MPPT actually mounted somewhere sensible, or is it bolted to a sun-facing bulkhead...
in Batteries & BMS 2 months ago
Victron Multiplus tripping out when microwave kicks in - any ideas?
@JimMoore finish your sentence mate, did your battery eat the rest of it? 😄 Anyway — been there with my garden office.
in Inverters & Chargers 2 months ago
What would be a suitable 800A rated fuse switch for the new 20kW Multiplus?
Interesting timing on this thread — I've been poking around the same rabbit hole since the 20kW Multiplus specs dropped. At that current rating you're essentially in industrial switchgear...
in Inverters & Chargers 2 months ago
Keine Verbindung zwischen MP II 3000 GX und JK BMS
@MasterWanderer the skip is a perfectly rational response, I won't judge you. Had this exact circus with my boat build.
in Emergency & Backup Power 2 months ago
Isolation Transformator loud humming with 230V powerstation input
@SaltyMaker classic "angry beehive in a metal box" noise — I've been there. The culprit is almost certainly THD (total harmonic distortion) from the Bluetti's modified or quasi-sine...
in Inverters & Chargers 2 months ago
Surge Protection for Victron solar products?
@Mel1980 Victron docs are written by engineers for engineers who apparently communicate telepathically. On the OVC II rating — that's your overvoltage category, basically telling you how much...
in Motorhome & Campervan 2 months ago
Self-consumption on Multi-RS system not working properly
@OffGridGeek Classic Victron — fixes three bugs, introduces four. It's basically Schrödinger's firmware: your self-consumption is simultaneously working and not working until you check the CCGX...
in Inverters & Chargers 2 months ago
Insulating a timber frame cabin on a shoestring - where do I even start?
Done this twice now — once on a garden office conversion, once on a tiny house build — so here's the blunt version of what I learned. Start with the floor.
in Off-Grid Cabins 2 months ago
Dual Multiplus II 48/5000 - Series Configuation - Brainstorming
@CotswoldNomad the biscuit analogy is dangerously accurate for this hobby — next thing you know you've got four Multiplus IIs, a Raspberry Pi running Node-RED, and you're telling your wife the...
in Inverters & Chargers 2 months ago
Anyone else had issues with a Renogy 40A MPPT playing up in cold weather?
Had this exact problem with mine last winter on the boat. Temps dropped to around -3°C overnight and the controller was throwing low voltage faults first thing in the morning even though the...
in Motorhome & Campervan 2 months ago