Search found 172 matches

by Rusdy
Tue, 11 Sep 2018, 11:47
Forum: Renewable Energy and Storage (Non-EV)
Topic: 250 kW Wave Generator
Replies: 7
Views: 317

Re: 250 kW Wave Generator

Carnegie Ceto seem solid on design and finances . Design yes, finances questionable. I have a colleague who is serious into share trading and has their shares for a while. After series of shares dilution, purchased EMC and sold again under price, sounds like a company who struggle keeping afloat fi...
by Rusdy
Mon, 10 Sep 2018, 11:55
Forum: Renewable Energy and Storage (Non-EV)
Topic: 250 kW Wave Generator
Replies: 7
Views: 317

Re: 250 kW Wave Generator

HeadsUp wrote:
Thu, 06 Sep 2018, 17:13
...
Generating power from Ocean Waves is a tough *** environment to play with.
Yup, I've been watching Carnegie since its early inception. But cost is just simply too much playing in a harsh environment. Impossible to compete with cheaper solar and wind.
by Rusdy
Fri, 07 Sep 2018, 10:13
Forum: The Lounge
Topic: Cheapest Commuting Challenge
Replies: 23
Views: 2267

Re: Cheapest Commuting Challenge

OK, so I haven't managed to beat cj7hawk cost per km. After 40,000km and 5 years later, mine hovers around 5 ~ 6 cents per km . However, after looking cj7hawk video here , I don't think I can cope 1,500 commuting hours (eBike only to date) with that vibration and noise (trying to claim superiority h...
by Rusdy
Wed, 15 Aug 2018, 15:32
Forum: Charging Infrastructure
Topic: How DC chargers work
Replies: 11
Views: 585

Re: How DC chargers work

Simply put, DC connection has higher capital costs but lower line losses. I'm not sure I trust that articles author Hi Brendon, benefit in using DC transmission is already well documented. For example, here . Specific to the lower line losses argument, this is due to DC doesn't suffer from reactanc...
by Rusdy
Wed, 15 Aug 2018, 15:18
Forum: Charging Infrastructure
Topic: How DC chargers work
Replies: 11
Views: 585

Re: How DC chargers work

brendon_m wrote:
Wed, 15 Aug 2018, 12:14
... And I was reading the other day about a 800kw standard. That's a lot of electrons...
Indeedy. I'm very interested to see whether DC microgrid will come into play due to this reason as well. Even Siemens already mentioning MVDC network for AEMO. Why not even go further down to LV network?
by Rusdy
Wed, 15 Aug 2018, 11:11
Forum: Charging Infrastructure
Topic: How DC chargers work
Replies: 11
Views: 585

Re: How DC chargers work

Hi Brendon, 150kW is not hard to get (although not trivial). From Tritium user manual (albeit, 100kW station only), it recommends 50mm2 cable (150A feed). Bunch of no-gooders broke the world record in Kwinana sometime ago , requiring 800A feed (half Mega-Watt). Too bad, I can't find the detailed inf...
by Rusdy
Wed, 08 Aug 2018, 09:21
Forum: Hyundai
Topic: Hyundai Australia Kona EV info
Replies: 42
Views: 3326

Re: Hyundai Australia Kona EV info

Looks like model 3 still it (price won't be much different?). I saw Kona (explosive version) on the road, amazingly, similar size with leaf. How on earth they fit that much battery?
by Rusdy
Thu, 02 Aug 2018, 11:20
Forum: Nissan Leaf
Topic: Importing 2013-2017 Nissan leaf from japan
Replies: 8
Views: 1064

Re: Importing 2013-2017 Nissan leaf from japan

tassie_tiger wrote:
Wed, 01 Aug 2018, 17:34
A great resource here:
https://samholford.github.io/leafguide/
That is seriously good info, thanks for sharing the link!
by Rusdy
Wed, 01 Aug 2018, 15:23
Forum: Nissan Leaf
Topic: Nissan Leaf Battery Flattening Test
Replies: 3
Views: 360

Re: Nissan Leaf Battery Flattening Test

My dealer didn't give that advise.

Although I did notice my SoH increased very, very slightly (around 1%) when I did test to flat, but it quickly revert to normal. See the spike in Feb early this year on mine (ignore other spikes):
Image
by Rusdy
Tue, 31 Jul 2018, 18:27
Forum: Nissan Leaf
Topic: Importing 2013-2017 Nissan leaf from japan
Replies: 8
Views: 1064

Re: Importing 2013-2017 Nissan leaf from japan

I doubt the battery is any better. Judging from a single sample, degradation rate is the same with earlier one.
by Rusdy
Fri, 27 Jul 2018, 09:24
Forum: Batteries, charging, management and monitoring
Topic: 54v super cap detail
Replies: 11
Views: 740

Re: 54v super cap detail

You'd be better off with the super awesome Arvio supercapacitor! It's cheap, it's here, it's (contentiously) proven!! :lol:
by Rusdy
Tue, 03 Jul 2018, 10:50
Forum: Other
Topic: Jaguar i-PACE SUV might arrive 3Q 2018
Replies: 3
Views: 1186

Re: Jaguar i-PACE SUV might arrive 3Q 2018

No wonder I start seeing i-Pace in carsales.com.au
by Rusdy
Fri, 29 Jun 2018, 13:21
Forum: EV Racing
Topic: EV smashes all time Pikes Peak record
Replies: 5
Views: 832

Re: EV smashes all time Pikes Peak record

Jeff Owen wrote:
Thu, 28 Jun 2018, 10:54
... Turn up the volume...
I bet he could've gone even quicker without the bloody siren whooping in his ear that loud. :lol:
by Rusdy
Fri, 22 Jun 2018, 16:18
Forum: Hyundai
Topic: The full Hyundai Ioniq range headed down under
Replies: 46
Views: 5398

Re: The full Hyundai Ioniq range headed down under

Yes but the Ioniq is also very efficient, so that 28 kWh will get you almost 200 km. Still a bit short, but definitely better range than a 2012 Leaf. The Ioniq is definitely in my watch list. I rarely go out of the city, so smaller battery (hence cheaper) makes sense. Fast charger network is far mo...
by Rusdy
Fri, 08 Jun 2018, 13:57
Forum: Charging Infrastructure
Topic: Around Australia Electric Highway
Replies: 15
Views: 1099

Re: Around Australia Electric Highway

Thank you AEVA and those who are involved in getting more charging spots. In WA, I got to enjoy the fruit of AEVA hard labour (and lots of those behind the scene, and front, such as RAC) so I could easily travel outside the city using my 'classic' Leaf, charged by the DC fast chargers, merely spaced...
by Rusdy
Wed, 06 Jun 2018, 12:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 6
Views: 1086

Re: Tesla PW2

For those who have PW2, and found the new TBC (Time Base Control) is confusing, I did a wee bit different experiments and concluded that TBC Cost Saving with peak time extension to cover the shoulder is not a bad idea (in order to reduce solar exports, for those with poor FiT). I also found a quirk ...
by Rusdy
Tue, 24 Apr 2018, 09:41
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 356
Views: 22824

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Hi @Supercaps , although you already mentioned you don't sell the individual cells, perhaps, you still have some individual supercap cells floating around in your workshop?

I'd be very interested to buy a dozen of them. Please?

Rusdy
by Rusdy
Mon, 16 Apr 2018, 08:36
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 899

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

From what I observed in the eastern state grid, isn't the opposite happening? i.e. retailers are working with battery manufacturer to offer even cheaper electricity (i.e. Sonnen flat)? As their grid market allow to make battery pay-back much quicker (i.e. ability to sell and buy during off/on peak w...
by Rusdy
Wed, 28 Mar 2018, 09:30
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 356
Views: 22824

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Golly gosh, I thought this scam is thoroughly gone by now (since it's obvious). I guess I don't want to miss the excitement ( FOMO ) too! Hi Supercaps , I genuinely applaud your coolness in answering these critics. However, do see it as a genuine care from us to you, not being scammed by kilowatt la...
by Rusdy
Tue, 27 Mar 2018, 11:50
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 356
Views: 22824

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

weber wrote:
Tue, 27 Mar 2018, 10:53
You mean AUD 1.3 per Wh.
Whoops :oops:

weber wrote:
Tue, 27 Mar 2018, 10:53
You can see that in 1000 qty they are USD 2.0 for a 3.12 Wh device. That's about AUD 0.85 per Wh.

If they were a bargain, why would they need to lie about what they are?
Touche!!
by Rusdy
Tue, 27 Mar 2018, 08:41
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 356
Views: 22824

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Hang on! Let say it is indeed LTO. At AUD 1.3 per kWh, isn't that a good bargain? That's even give me more confidence to buy the smaller pack (if it is indeed an LTO)!
by Rusdy
Mon, 26 Mar 2018, 13:53
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1849

Re: Lithium Starter Batteries

But the prismatics havs sloshy fluid and the pouch/cylindrical are solid. I would expect the pouch/cylindrical to always fair better in the automotive environment. I thought pouch is the solid one (i.e. polymer elctrolyte), where as prismatic and cylinder are 'sloshy' one (i.e. solvent electrolyte)...
by Rusdy
Mon, 26 Mar 2018, 11:36
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1849

Re: Lithium Starter Batteries

Hi antiscab , check your private messages. Hi Richo , looks like the chemistry is it (instead of the physical whether they are rolled or pouched). I ran a full charge regime just for curiosity and the voltage ramped very quickly when it hits 3.5-ish Volt (per cell). Once all cells reached 3.6 Volts,...
by Rusdy
Fri, 23 Mar 2018, 09:44
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1849

Re: Lithium Starter Batteries

I replaced the starter battery of my Corolla (then sold to a friend of mine about the same time) 3-ish years ago with 40Ah battery pack from EV power. At the time, it was awesome, obviously being an LFP with such a high cranking amp. In the last couple of weeks, however, a friend of mine told me the...
by Rusdy
Thu, 22 Mar 2018, 13:22
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 58
Views: 3821

Re: Prelude conversion project - some questions

We can put a heat exchanger on the battery coolant line so that refrigerant can be used directly to cool the battery pack. I'm inclined to think that a fan-forced radiator to ambient will suffice, but we do get some unpleasantly hot days through summer in Perth. Shouldn't be too hard to plumb in if...