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Came across a design for a water wheel thats 80% efficient and it utilises a low head of water. Who'd of thought that the water wheel could still be improved! Google "Rotary Hydraulic Pressure Machine"

Yes, you have rather missed the point. Southampton University has published a paper on a new waterwheel design that is 80% efficient. I am not sure how much more tangible that can be? It's a published paper detailing the design and test results. I could maybe post a PDF file of the paper...

Looking at an Istabreeze 2000w turbine, a 6m/s wind speed gives you about 250W, so this sounds a lot more realistic. 2000W needs a full on gale!

Thanks D. Definitely something to consider. The cells are 95% of the cost, EVE charge us per Wh, whichever cells we use - so could do a much smaller system with 50Ah and it would be around half the cost. 15kWh is a sweet spot I think, in the UK. The only downside is the weight of a single...

Yes, was wondering about putting a megger on.

Yes, I see that CATL are working on them. Maybe due to manufacture this year. I assume they have some clever technology that makes this chemistry rival LiFePo4, which may not be available to other manufacturers for a while? A battery that's 1/3 the price would be revolutionary if there are no...

OK, thanks for the info!

Fogstar sells EVE grade A and B cells in the UK. They have an office in China so I assume they can get the right product. Shame it seems to be such a lottery to get 100% genuine batteries...

14khw battery kit on Fogstar, £500 for the case with BMS. £1920 for 16x 280Ah B grade cells. So 14kwh battery for £2420... Not bad. Anyone got experience of this kit?

How did you get on?

A 4800wh 48v Pylontech is £1600 in the UK. From a quick look on ebay, it looks like I'd need to spend £1000 on cells, plus a BMS, wiring and a case. So not really dramatically cheaper than ready made. Am I missing something?

Panels have arrived! Just need some consistant sun to test them!

The research was done by Southampton Univercity. Just google "Rotary Hydraulic Pressure Machine" you'll find loads of pictures and the research papers.

Just noticed a house in our village has landscape mounted panels with the clamps on the shorter edges. Been there for years.

How so?

Just found a chap in the UK (sustainableorange) who has put some vids up on YT about his Tesup experience. Bought a 4kw vertical model which rusted and developed a shaft wobble within 6 weeks... Not sure it generated a single watt. He's now got a Magnum 5 horizontal to try...

So there's a single rack unit of 15kwh coming? How will that compare to the 3x 5kwh in the cabinet, price wise?

I'll see if I can get a datasheet on the panels. The are LG and are used so that may not be too easy.

According to weatherspark.com we have an average annual windspeed of 23kph nearly 13.8mph or 6.4m/s. Our house is in an exposed location with very little between us and the coast 4 miles away and we get prevailing westerly winds. (no houses or trees in between, just rolling hills) Looking at...

Sounds good! What's the ETA?

If I use a JBD 200A 48v BMS along with 16x 280Ah EVE LiFePo4 cells, will it talk to a Sunsynk ECCO 5kw hybrid inverter? I assume it has to pretend to be a Pylontech? Using 280Ah cells means it won't be a standard Pylontech battery type, so will that be a problem? I really want to build a...

Great info guys! I see that some hybrid interters have generator inputs which makes the setup a bit easier I guess. The max charging current of LiFePo4 is the big issue isn't it. 0.5C on a 48v 304Ah battery means I can only put in about 7kw per hour so getting the battery up to half capacity...

Thanks for the info. I can see why big is better when it comes to wind turbines! I may have a read up on fieldlines and have a play at making some, just for fun!

I read that raw Lithium prices are dropping back after a big peak and that there may be a glut of LiFePo4 batteries due to over supply in China. Have LiFePo4 battery prices started to drop? I haven't really been watching prices that carefully and I was wondering if there's likely to be a...

They look to be going for about £900 for 5600wh, so yes slightly cheaper but I can buy new LifePo's for that 16x 105Ah. Maybe I will have a look to see what a crashed tesla goes for!

Yes, but can't see how the clamps are fitted in this pic?

To fit one more panel on my shed, I could go landscape, 2 rows of 3 instead of 5 in a row, portrait. I saw that to do this I am supposed to mount rails horizontally and then put another set of rail on top going vertically and then mount the panels with clamps on the long edges. What happens if...

No worries. I learned a new word today! Insolation! I thought it was a typo on the amazon ad....

Interesting! I guess a box and wiring and connectors could be done for £200. Would that BMS talk to a Sunsynk inverter?

Oh and I just found their ready built unit which looks really nice. 5.12kwh for £1350.