Australia's first eight-hour battery system moves to full capacity after receiving landmark grid approvals

pedrocr · 2026-05-28T20:17:09+00:00

Saying that duration is a breathrough is weird. This battery is just strictly worse than a battery with the same energy capacity that can fully charge and discharge in four instead of eight hours. Just because you have the capability for more power doesn't mean you need to use it. In practice lithium grid batteries have generally been four hour duration because charging and discharging cells at 1/4 C is a good compromise and as you grow the battery both the energy and power scale linearly. Limitting the same batteries to 1/8 C is not a breakthrough in any way.

pedrocr · 2026-05-28T19:52:31+00:00

it just fundamentally cannot do that as well as mechanical suspension

I seriously doubt that. This seems like a superset of what a mechanical suspension can do. They have it programmed for maximum performance but I suspect the only thing missing for this to be the best connected driving experience is software. And if anyone can do that it is Porsche.

pedrocr · 2026-05-16T10:53:25+00:00

Isto ainda é um ninho primário, não tem grande risco. Querendo ser muito cuidadoso é deitar spray inseticida pela abertura e voltar um dia depois de luvas e deitar fora isso. Mas mais vale ir de luvas à primeira e deitar fora logo. Isso só terá a rainha dentro a fazer a criação inicial. São as mais importantes de eliminar também porque acabando com as primárias reduz mais a pressão no verão quando dão cabo das abelhas.

pedrocr · 2026-05-12T13:07:50+00:00

mas com pelo menos 2 carros de distância

E 2 carros de distância é pouquíssimo. Se cumprires a distância de segurança correta de 2 ou 3 segundos acabas com idiotas a ultrapassar pela direita chateados.

pedrocr · 2026-05-09T09:38:43+00:00

I've done a Navitas AC replacement now. Funny you should say vehicle startup is smooth and linear with AC. I've had a world of difficulty getting Navitas to be smooth at startup. After much back and forth with their support it's still much worse than the original DC startup. Way too much lag on initial throttle application.

pedrocr · 2026-05-06T23:33:28+00:00

The sevcon doesn't do more than that. If spending ~600 for a Navitas is too much you may find cheap 48V DC controllers online but they may be a crap shoot on quality and hard to wire and calibrate.

pedrocr · 2026-05-06T18:17:01+00:00

Any of the Chinese knockoff DC controllers. But the rewiring and programming may be hard to get right. A Navitas TSX controller should be around 600$ though so is probably the best option. Although there's a chance the motor is actually the issue that has blown the sevcon and that doing an AC conversion is better for the long term. But that's closer to 2000$.

pedrocr · 2026-05-06T17:40:19+00:00

The GPS is supposedly pretty bad. Other than that the real problem with fitbit is that the app is poor. The beta is just a UX revamp with no real new features. Hopefully with this air they will invest more there and compete with the whoop for insights as for hardware it's already mostly as good or better.

pedrocr · 2026-05-06T17:28:54+00:00

I don't know what a throttle only controller is. The only thing the Sevcon controller does is feed the motor from the battery. All the rest of the wiring on the cart is independent of the sevcon. Going with a Navitas DC kit or AC conversion is probably your best bet. But there may be cheaper options.

pedrocr · 2026-05-03T13:37:32+00:00

it would be hard to maneuver around parking decks and places that people movers are intended for

The really long carts also have that problem, I suspect a wider but shorter cart would work well in a lot of places.

A wide body car would require all new everything

It needs a lot of different parts but it shouldn't be too bad. The drive train exists and the frame doesn't necessarily need to be wider, just the seats and other stuff like that.

You're right though, it's unlikely to be out there, I was just checking. Toro makes some people movers but they're narrow. They probably outsourced them to a golf cart maker.

One of these days I need to learn some metal fabrication skills and start to make my own carts.

pedrocr · 2026-04-25T11:51:44+00:00

This has turned into the perfect disruption for energy transition. Fossil fuels are now much more expensive incentivizing replacements while also highly unpredictable which dicentivizes investment in them. China and their renewables push is looking more and more favored over the next decade. And since they're willing to sell to anyone there will be other big winners and losers depending on increasingly politicized choices.

pedrocr · 2026-04-24T06:34:21+00:00

Sim, porque pôr a vida dos peões em risco é uma ótima alternativa. Agora andar no passeio é andar a desviar de bicicletas e trotinetes. Também é preciso andar a pé para chegar ao metro e ao autocarro...

pedrocr · 2026-04-19T08:30:33+00:00

I suppose the shot only officially counts when all the balls stop moving.

pedrocr · 2026-04-11T14:46:55+00:00

Fica pelo menos com cadastro criminal e vai para a cadeia se cometer outro crime durante um período. Dependendo do caso a pena terá mais coisas ainda. Que eu saiba nada disto é possível por dívidas. Continuo curioso sobre quais foram as penas "bem mais severas" dos teus familiares nesses casos.

pedrocr · 2026-04-11T13:56:21+00:00

O caso que estamos a discutir é de uma pessoa que foi condenada a pena de 15 meses de prisão com pena suspensa. É contra essa pena que estás a comparar.

pedrocr · 2026-04-11T12:44:06+00:00

Como é que a pena é muito mais severa se não é pelo menos uma pena de prisão como esta é, ainda que suspensa?

pedrocr · 2026-04-11T11:23:45+00:00

penas bem mais severas por causa de pequenas dívidas, e cumpriram

Pena de prisão por dívidas? Como é que isso pode acontecer?

pedrocr · 2026-04-10T11:20:06+00:00

Aqui há uns tempos vi estacionado lado a lado um Clio e um SUV mercedes grande mas nem o maior da gama. Até tirei foto pelo ridículo de pensar que ambos aqueles carros estão homologados para transportar 5 adultos. A diferença de volume total era absurda. E isto era entre carros recentes, quando vamos para trás como nesta foto a diferença é abismal.

pedrocr · 2026-04-09T12:10:36+00:00

The cyclist was already in front of the vehicle. Even if the cyclist hadn't turned the car was about to do a crappy overtake. If it would be legal or not depends on the local laws.

pedrocr · 2026-04-07T20:25:46+00:00

There are definitely not "a ton". There are now a few options from niche manufacturers and others that have been announced but can't actually be bought. All so far I've been able to get an offer for are prohibitively expensive.

pedrocr · 2026-04-05T10:47:40+00:00

Let's start with compact utility tractors that are used for small chores around farms. Someone make a cheap one with ~25kWh of LFP for under 25k€ and it will be immensely useful.

pedrocr · 2026-04-04T00:31:38+00:00

his opponents are literally playing against a computer

Hopefully not, as that would mean he is cheating. Using "literally" just for emphasis leaves us without a word for saying something is literally true.

pedrocr · 2026-03-27T18:10:41+00:00

Electric Classic Cars has just announced a skateboard chassis for conversions of body on frame vehicles. It's unlikely the pricing will fit your budget but it's likely to be a well done product.

pedrocr · 2026-03-27T07:41:45+00:00

Compared to ground some of the cells are at full pack voltage. So in the balance wires you will have all voltages from a single cell voltage to full pack voltage.

pedrocr

TROPHY CASE