Search found 319 matches

by Marcus
Fri May 30, 2025 11:37 am
Forum: Energy storage, batteries, energy tariffs
Topic: A project crying out to be done!
Replies: 20
Views: 1018

Re: A project crying out to be done!

You seem to have several options available : sunsynk, windyboy for a.c. coupling, or a programmable mppt for d c. Charging a battery- i think midnite solar or morningstar do an mppt with a programmable curve - i don't know about victron. But it would need to be an mppt with a high input voltage tole...
by Marcus
Sat May 24, 2025 12:32 pm
Forum: Energy storage, batteries, energy tariffs
Topic: A project crying out to be done!
Replies: 20
Views: 1018

Re: A project crying out to be done!

I assume the proven was operating as a direct to immersion/storage heater system? If so, then the quickest and simplest way to get it going is to re-instate it with the immersion in the new hot water cylinder, and existing(?) Storage heater(s). If you want to use the proven with the ashp / car / hou...
by Marcus
Wed May 21, 2025 2:49 pm
Forum: Transport
Topic: Conversion of classic car to EV
Replies: 23
Views: 1203

Re: Conversion of classic car to EV

I would tend to convert as soon as possible from an environmental pov. I did consider doing an ev conversion at one point, but didn't have the time. I don't know what age range your classic vehicle comes in, but I would aim for pre 2000 model if possible*: dvla introduced the emmissions part if the ...
by Marcus
Tue May 13, 2025 12:06 pm
Forum: Energy storage, batteries, energy tariffs
Topic: How to Fogstar battery?
Replies: 10
Views: 1022

Re: How to Fogstar battery?

Jk bms had a good reputation and were the most fully featured i think. i have a couple: one basic, one smart. But then JK went bit off with a lack of customer service for a while - not sure if they've gotten over it or not; Seplos seem to be a popular alternative but I have no experience of them. It...
by Marcus
Tue May 13, 2025 10:40 am
Forum: Hydro Power
Topic: "Kinetic Hydro"
Replies: 16
Views: 2004

Re: "Kinetic Hydro"

It looks 'plausible' and I can confirm that 380w coming in 24/7 is very useful. But (looking at the smaller unit): it requires 2.5m/s flow and a depth of 0.5m - that's quite a large, fast stream: if your stream is 1m wide and 0.5m deep (and rectangular), that's 1.25 m2 per second. I suspect that eve...
by Marcus
Sun May 11, 2025 1:39 am
Forum: Photovoltaic
Topic: Hoymiles problem, or grid voltage too high?
Replies: 48
Views: 14102

Re: Hoymiles problem, or grid voltage too high?

I don't know anything about hoymiles, so I don't know if you have access to its settings. If you can set it to a UK spec it ought to keep working up to 264v ish. That would be the optimum solution. You can get voltage optimisers that reduce the supply voltage to your house, though I'm not convinced ...
by Marcus
Thu May 01, 2025 7:50 pm
Forum: Energy storage, batteries, energy tariffs
Topic: Fogstar have 43% sale on EVE batteries
Replies: 15
Views: 1154

Re: Fogstar have 43% sale on EVE batteries

True enough - but it seems to be part of my essential nature - a part I've battled with my whole life.

Although in the case of solar panels, many of those who adopted early were more than compensated by the FIT they received.
by Marcus
Thu May 01, 2025 4:12 pm
Forum: Energy storage, batteries, energy tariffs
Topic: Fogstar have 43% sale on EVE batteries
Replies: 15
Views: 1154

Re: Fogstar have 43% sale on EVE batteries

Thanks for the heads up: it tipped me over the edge and I've gone and ordered a set. :xl: Still wondering if it was a wise decision: my suspicious mind makes me wonder if this is an indication that battery prices are about to plummet - if they do I'll be cursing. But it's too late to worry, as they'...
by Marcus
Tue Apr 29, 2025 12:45 am
Forum: Transport
Topic: Tesla mileage discrepancies.
Replies: 25
Views: 1812

Re: Tesla mileage discrepancies.

It does seem a little far fetched, but then VW and others were caught 'cheating' the emissions tests, and Apple slowing their phones down, so it's not totally out there. But if all teslas did this, there would surely be a lot more people noticing mileage discrepancy. I suppose tesla could have a 'pr...
by Marcus
Tue Apr 29, 2025 12:07 am
Forum: Media and Culture
Topic: Europe - Spain, Portugal and France major power disruptions
Replies: 26
Views: 1861

Re: Europe - Spain, Portugal and France major power disruptions

Quote ..........REN said: “Due to extreme temperature variations in the interior of Spain, there were anomalous oscillations in the very high voltage lines (400 kV), a phenomenon known as ‘induced atmospheric vibration’. These oscillations caused synchronisation failures between the electrical syst...