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AFAIK, 'most' (sorry!) lithium batteries are best maintained at 20-80% state-of-charge. Battery management systems however, need to calibrate against the real battery sitting still at different states of charge. I run my EV a bit like an ICE car - most of my use is short-journey, so I charge...

7kW charging will be largely unaffected by environmental or SOC factors, and it'll give a theoretical 42kWh in 6h. Let's kill 10% for transformer and heat losses and round down to say 35kWh, just for kicks. At say 3miles per kWh (conservative estimate based on review figures) that's about 100...

One thing to add - try some thinner steel. 0.6mm wire is ideal for car body repairs etc so I'm guessing that's your setup, and it'll probably never blow through 4mm. Get some 1-2mm stock to learn what a hot weld looks like.

The Tesla Model S and X were designed for swapping batteries at a service station - the whole bottom of the car just unbolts/unplugs. The hotswap plan was a failure but not for that reason.

The i3 was a fantastic car IMHO but it was a dedicated EV (BMW EVs are all common-platform now iiuc) and the styling wasn't very BMW. History will judge it a design classic I reckon. I think it's a bit sweeping to say that all PHEVs are impractical. Our Outlander has tons of space inside a...

My Discovery snapped its crankshaft, a very common issue with the TDV6 and SDV6. JLR stuck to their 'no known issue' nonsense despite the indy garages being full of V6 cars with snapped cranks - even JLR themselves had no new engines and limited supply of reconditioned engines because it's so...

We can't know whether he decided to employ it off-the-cuff, but we do know that Bojo the clown didn't just invent the term 'herd immunity', which is when the population as a whole resists the spread of a disease because enough people are immune. To be clear, vaccination and prior infection (and...

That was not my assertion. I was asserting that compliance with a monthly population (everybody) vaccination program would be low, precisely because most of the subjects would not see themselves or their progeny as high-risk - aeons ago I learned about this (obvious?) point with supporting...

Good time to answer the unasked question of whether I'm hopelessly naiive about all of those regulatory bodies that I mentioned. No, I'm not. Governments are utterly complicit in the rise of UPF despite compelling evidence of harm. Chris van Tulleken is a well-known author and campaigner...

@Jacob the obesity=disease thing is thorny I think and there are strong arguments on both sides. But equating obesity with fat intake has in part led to the current issue. Balancing calories against exercise is tricky too because of the relatively small marginal energy cost of moderate...

Lots of cross-posting - but thankfully little cross posting (I'll get me coat in a minute) As a sometime scientist in a related field, I admit that I contribute to these discussions mainly because of the antivax thing, which I choose to oppose. I'm trying to be reasonable about it, and for the...

I thought I'd try to come back to Nick's original questions and make sure they weren't lost in the ensuing vax/antivax furore :) Answered already, but the decisions about vaccination programs always consider the benefits (health, mortality, NHS burden etc) against the risks (side effects...

I guess I wasn’t really thinking in terms of winners and losers, more in terms of reliable cost effective energy production. Off-peak tariffs are a tool to flatten the distribution of load. If the load distribution flattens by other means then yes, cheaper off-peak tariffs will disappear...

I think that's one of a great many. They do try to talk about concrete gains like 'NHS burden' but I think such metrics are either dismissed as unimportant or seen as offensive, trading off trivial things like cost against important things like health (see above). A medical friend of mine...

Yes, great post by @Yorkieguy , but I was asking what specific 'truth' @Dave Moore was referring to.

What truth was this?

Thanks jacob! The NYT link is paywalled, is there another source?

Regarding convenience and cost playing a role in healthcare, that's reality! The money to pay for healthcare is always limiting, so huge efforts are underway all of the time to figure out cost-effective ways to treat people, and to choose which people should get treatment. I'm just glad I'm...

If I understood your point, it's that charging an EV and your home battery dominates your draw from the grid, and that they represent a shift in consumption times (presumably to off-peak time). Isn't that shift a good thing for grid management? Right now there's usually a surplus at night, but...

Why wouldn't you take an mRNA vaccine?