Endless Sphere

The customer needs 24 kWh of battery in the smallest volume and lowest weight, at the best price. In this instance, cylindrical cells wins. The cost of cells in this instance is AUD$8200, and the extra stuff to make it all fit will probably bring the final price up to about AUD$13,500. That's $540 p...

Now it makes sense - thanks. I'd actually forgotten that Australia uses dollarwannabees. They're called Dollarydoos thankyou very much. https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.huffingtonpost.co.uk%2F2015%2F10%2F16%2Fpetition-rename-australian-currency-dollarydoos_n_8313124.html&am...

I've got a LiPo build thread in the for sale section which folks are welcome to check out - It's a long running study in the best (or rather, least worst) way of assembling a LiPo pack with multiple cells in parallel. I have recently started building battery packs using cylindrical cells because som...

I think it helps keeping topics more on topic, if not you could not say "take it over to toxic". Like that 'Wind Solar Nuclear' thread, some good info. Maybe better than a Novel? That thread has a life of its own. An interesting exercise in the subtle art of persuasion, or not, as the cas...

Don't QS Motor have a recommendation for a controller?
Kelly have gotten much better, but they are in the bargain basement end of the quality spectrum.

Hi Frank, sorry for the late reply. The EV Power BMS I was using in the bike was pretty basic, so it only let me know if the cells got to 50°C and at that point we'd simply come into the pits and point a fan at it. But that only happened once at the end of a hot day at Queensland Raceway and five fu...

I understand it is quite difficult to get converted EVs through licensing inspections in Europe? I wonder why the conversion scene is so much smaller than in the USA or Australia and New Zealand.

Costs have definitely reduced a lot in the last 8 years. Unsubsidized solar panels in Australia are currently 42c/W. The subsidies are more or less wound up for residential rooftop solar anyway - 3c/kWh in WA and the STCs will be pretty much gone next year. As far as I'm concerned PV doesn't need an...

I was hung up on the money thing but now it does not matter what it cost. Time to move forward, stop hanging on to the 1800's. ^^ This :bigthumb: The late South Australian mayor of Port Augusta, Joy Baluch was once pressed on the cost of a renewable energy hub for her town, and some douche (I think...

Well I did start an offline dispute with Alibaba and within a day I had my refund.
So that's a relief. Even if it's about $500 less than what I sent across initially due to exchange rates, commissions etc, its' nice to have it over with.

Telegraphic transfer, so there's a strong paper trail but I don't have the might (for what it's worth) of Alibaba or Paypal to help me.

Has anyone here on the Sphere had trouble buying stuff out of China? I've been given the root-around trying to buy some 63 Ah LG pouch cells from these guys: http://vodno.en.alibaba.com/ After sending them US$2424.40 back in June, they assured me the cells were on their way. 3 months later still not...

I only every buy LiPo cells individually from my supplier in China who no doubt gets them made in the same factory as Hobbyking. But the cost of LiPo cells is at best US$8.50 each in orders of 1000+ and typically end up at about $15-$16 AUD each once the GST and customs are paid. Alibaba and Aliexpr...

Interesting - was the Powerwall a returned dud or something?

I've ridden the Livewire - great bike. A genuinely good electric bike. Its range is about what I'd expect for a bike of that size, weight and capability, the components on it are appropriate for the job, and it's plenty fast. Harley will sell every bike they make. As for the Long Way Up series - it'...

Pretty sure they produce more carbon monoxide than petrol or diesel cars, so I would say the cities will be better with electrified vehicles over LPG. Main reason they fell out of favour with cabbies was cost - gas isn't cheap any more. Ever since Australia started exporting so much gas and the like...

Odd. ??....What make you think NSW “needs” power from SA ?.. .. currently NSW has surplus capacity (Gas) and actually prefer to use cheap power from QLD coal plants. NSW is a net importer of electricity. It's bringing power across a border 80% of the time. Might as well bring in some of that curtai...

Then they really ought to build the NSW SA interconnector so the state which needs it (NSW) can take it from the state that has too much (SA).

Australia's main electricity grid - the NEM, enjoyed five days in a row of >50% renewable electricity for a few hours each time.
https://opennem.org.au/energy/nem
The grid was just fine.

I built this some time back but only just finished it. It's a 14s7p battery built using Panasonic NCR18650GA cells spotwelded with nickel. It's got fly-wires for a balance port, but I've left it in case a specific BMS is wanted. 20201004_144438.jpg 20201004_144507.jpg 20201004_144450.jpg The battery...

Any large box with a bit of depth and some internal bracing will be rigid AF. If the battery is built with rigidity internal, simply bolting it into the car makes it a structural member. In effect, Tesla's eventual realisation that fully encapsulating the cells is a good idea for corrosion inhibitio...

My previous employer was seeking to do all the things Tesla is doing now (except Tesla has competent engineers and a vision, and my previous employer ...didn't. http://www.capebouvardtechnologies.com.au/tech The structural battery thing is kinda dumb really. It's totally unnecessary but if you were ...

Pleased to report my home solar and battery storage system is up and running! 20200912_152319.jpg When I picked up the 28 Canadian Solar 280 W panels at auction (brand new, just a discontinued line) I put all of them on the roof as two arrays of 14 in series (7.9 kW max). When the system was finally...

Assume 1C continuous, or about 3 amps per paralleled cell.

In my recent case, it was 6p7s for a 24 V system. So there were three cell ends I spotwelded to and then soldered onto these bits of nickel tab. But it could have been 20 wide - the issue is the same. How to safely, and neatly get the power out.