Talking Batteries and Solar with EV Nick
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- Опубликовано: 3 янв 2024
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Just found this channel via Nick. Some really interesting content to catch up on. Thanks. 👍
Great having you mate
What a geek out, love it.
I’ve got Givenergy a Gen 1 hybrid with 8.2kWh.
Got a heat pump now so wishing I had a bit more & the higher output inverter 😢.
The system can only do timed export IF you don’t use the eco mode. eco mode does the managed discharge based on loads. If you’re doing forced export it will do battery hold until the timer.
Only other ways to force export is to either:
Use Home Assistant to change the setting manually / with a script which manages to the saving session times,
Or set a reminder and set the system to “export” using then”play/pause” buttons in the Givenergy app.
I use the latter but beware it can be a PITA if you have poor connectivity/dropout
Hi James,
I enjoy your videos and like the straightforward style of the delivery. Regarding your mother - you stated she was getting around 2.5 Kwh from Battery and kept on drawing from the grid when she was using her kettle (she didn't have a battery to provide more for peak loads in the house usage?). Have you thought about getting her the Phillips Electric kettle (Eco Conscious Edition HD9365/10) - it uses 2.2 watts (max) instead of the standard 3.5 watts from a kettle.
When we first got our solar array and battery (we started with just a 3.3 Growatt battery that provided about 2.2. Kw as a standard amount for the house when solar isn't coming in) - I got one of these Kettles to avoid 'spiking' and drawing extra from the grid when we were waiting for the sun to come up and add to what the Solar PV and batteries would provide (i.e. anything above the 2.2. Kw would draw from the grid). And the bottom line - this worked great - plus the kettle itself is a really nice design and doesn't actually take much longer to boil than a normal kettle (most of the time it uses less that 2 Kw anyway). This isn't a sales plug - I just don't know why people don't get the lower charge kettles like this - especially as the design is also really nice. We've had the Kettle since late last May and still works fine. It's a small bonus and let's face it, if you can provide from your own energy rather than the grid that's a good thing. Even if it's small amounts that soon add up over the year.
Thanks again for the videos - keep up the good work 🙂 best wishes, Michael
www.amazon.co.uk/Philips-Conscious-Bio-based-Pirouette-11/dp/B09BFLPHVY
Great video , Nick is a top ev/ battery/ solar nerd like us 😄
There's a lot of comments about heat pump running off batteries.
People I think are confusing the heat output of a heat pump with its consumption. So a 7KW heat pump will output 7KW of heat energy. The power consumption will vary depending on how cold it is. So at 7 degrees outside you will looking at about 1KW consumption and 2 degrees about 1.5KW.
So a battery will easily run a heat pump. Consumption will every so often go higher than this say for Legionella cycle or defrost cycles at low temperature. But thats when you draw from the grid. But the battery will handle the majority of it.
I've just learned something there about Samsung phones having the Protect Battery 85% charge limit option. That's now activated on my own Samsung phone. Thanks James!
Battery expert 😅
Great video. 👍 🫡
Little Nick is a top guy 👍
The grid is cheaper that an over priced battery and the co2 is massive
Octopus cosy is no good for a heat pump as it runs using a temperature not time lol😮
Powerwall 2 is 5kW continuous output and a fabulous battery Powerwall 3 will be even better with 11kW output from LFP batteries. My Powerwall is mounted outside as there was nowhere in the house to fit it.
The Powerwall 3 will be LFP, due in the USA anytime soon. Due in uk ???
The installers seem to love Givenergy batteries and they do seem to have a very nice graphical interface. So if you are into checking it everyday (like a hobby) then maybe the Givenergy is worth its high price.
Personally specs and value for money makes more sense (its there to do a job) which is why when people ask me I recommend the Sunsynk in either the 3.6kw or 5.5kw variants.
Have much energy are you using to heat the battery thats in freezing cold garage as you cant charge when its cold
James, I think you will find that most modern LFP batteries are about 10,000 cycles and NMC are around 2000 cycles.
I think the SR versions of the M3 and Y have had LFP for the last couple of years from CATL.
Our first EV a 7 week old M3HSR has them, it is, it seems, around 60KWH.
2000 cycle from nmc good luck with that not even close
@@markwilliams5654 Why do you say that? All the research papers etc I have read over the last 6 months show between 1500 to 2500 cycles for the newest NMC batteries. Obviously depending on how they are used.
I use home assistant to charge my phone and tablet to 90%.
Try and run a heat pump with that tiny battery lol clearly still using gas for heating lol 😊
GivEnergy have partnered with Axle james this is a very good DFS winner, tell your mum
When you say the losses are greater with a single inverter compared to the microinverters, how big a loss is it? & wouldn't a single inverter be by far better for maintenance costs? ( paying to have someone get on the roof & carry out repairs, rater than the shed or attic)
This would be my thinking.
I can only talk about the enphase micros for warranty but they publish a failure rate which is 1 in 2500 meaning your solar panel has a higher chance of failure also if a micro fails your system will work to its FULL potential minus that 1 panel, meaning you could have 5 micros fail but the other 50% of the system would still work as if the other 50% didn't exist, they also have zero power draw during night. Standard inverter would be a signal point of failure meaning inverter breaks you have no solar till repaired, also if a panel got damaged or stopped preforming as well it would drop the entire system performance down, you could fit optermisers on a string however if your doing that you might as well just do micros as optermisers will use some of the power from the panels. Standard inverters also draw power non stop even when sun isn't out. Enphase comes with a 2 year support package to cover someone going back on roof to repair a faulty inverter and the rest of the warranty is a new inverter, but with its low failure rate the risk is low.
The home batteries like my 9.5kw GivEnergy which is LFP has the safety benefit of almost impossible to catch fire without Cobolt. Also LFP has way more cycles than NMC.
If you also watch Dr McTurks video on charging batteries to 100% or not, especially NMC, you’ll see he says it makes absolutely no difference to the longevity, as long as you don’t leave the battery highly charged for days or longer. If your charging to 100% then driving the next day they are fine! GE 9.5kw has a guaranteed unlimited cycles over 10yrs and stay over 70% soh. Their other sized batteries have a guaranteed 5000 cycles over 10yrs and 70%. .
Tesla will likely move past LFP in future for the newer LMFP! Safe as LFP but more dense and powerful
Gas heating is nothing like a heat pump
You wont heat a house in time to super heat a house low temp radiators also you will get a bad cop value using a heat pump like that
Interesting that they think Tesla power walls are not lfp already that's not what I have heard
Still NMC rumoured it will change but nothing yet
Microinverters are great, but they are VERY expensive. They cost more than the panels themselves. They will triple the cost of your system.
They may be worth it, but if you can't afford it that's moot.
The grid is a better battery if you wanna save the planet
The risks of lithium ion batteries are greatly exaggerated. But specifically regarding the Tesla Powerwall, they have all kinds of sensors and safety design that make it EXTREMELY unlikely that there will ever be a problem. On the other hand, the typically MUCH more cheaply-made LFP home batteries are much more likely to have a problem due to poor BMS and thermal management. The battery chemistry is much less of a consideration than the overall design and build quality.
iPhone you can stop charging at 80%
What's going on with EV cars in China ?
Look up here on youtube 'Sudden EV Explosion, Rockets up 5 Meters, Close to 100 BYD Autos Spontaneously Combust'
this EV was charging when it decided to go from 0 to 60 in about 5 meters ........ up in the air !
You cant change the room temp more that 1c 24h a day low temperature radiators
None of your comments make any sense whatsoever.
The battery in my Pixel 3a is still going with little noticeable degradation and a 100% (on the screen) charge every day. The last time I had a Samsung phone it was crippled by their software updates slowing it down - proven as replacing Samsung android with Cyanogen made it perform as well as when it was new. I would never buy another Samsung phone they completely lost my trust.
James doesn't know what hes talking about its so funny
Over price waste of time a house battery ....130$ a kwh to make massive over priced madness
I will NEVER buy another Samsung phone. They are crap, which is why they NEED more battery-maintenance settings than other manufacturers. I have a 4-year-old midrange off-brand phone that has very little battery degradation, and in general is still going as strong as ever. It will probably last another 4 years. None of my flagship Samsung Galaxy S phones ever made it anywhere nearly this long.
a house battery is completely useless if you have a heat pump
Your using a battery to save money not co2 what a joke 😊