Search found 216 matches

by Rusdy
Fri, 23 Jun 2017, 22:57
Forum: Batteries, charging, management and monitoring
Topic: Overall impedance of a battery
Replies: 26
Views: 4994

Overall impedance of a battery

Anyone have hard data on how much internal impedance increase on their cells against cycle life (or maybe in the form of voltage droop)? My e-Bike battery has passed 1000 cycles (1037 at the moment) and for the first time ever in the middle of stormy ride yesterday my BMS cut off at the 75% (8.7Ah o...
by Rusdy
Wed, 03 May 2017, 19:44
Forum: General EV Discussion
Topic: Hydrogen
Replies: 25
Views: 4730

Hydrogen

It would be ground breaking if there is a portable (or not so portable for industrial scale) device to convert Ammonia to H2 (and vice versa) safely. Unless, someone managed to find a material that enable batteries with energy density that is cost effective to transport (complete with LCOE to boot)....
by Rusdy
Tue, 02 May 2017, 16:38
Forum: Batteries, charging, management and monitoring
Topic: Westfield new installations
Replies: 45
Views: 7418

Westfield new installations

offgridQLD wrote:
Perhaps it's some kind of small car syndrome.


Good point, never thought of that. Bullying for adults. q4ber will have problem with his Tango then. That's bully magnet!! Image
by Rusdy
Mon, 01 May 2017, 19:28
Forum: The Lounge
Topic: real time electricity generation
Replies: 18
Views: 3869

real time electricity generation

Yup, there used to be awesome one from imowa including detailed dissection from different generators (you can drill down to which Muja power station, Colgar wind farm, etc).

But that has been taken down now. I've managed to save some screenshots for example here: Click Here
by Rusdy
Mon, 01 May 2017, 17:40
Forum: General EV Discussion
Topic: History of the WA branch of AEVA
Replies: 2
Views: 938

History of the WA branch of AEVA

Funky phase II photo!
by Rusdy
Wed, 19 Apr 2017, 23:56
Forum: Mitsubishi
Topic: Interesting PHEV article - (non-Mitsubishi but!)
Replies: 2
Views: 709

Interesting PHEV article - (non-Mitsubishi but!)

When anyone do the math for transport (regarding energy use and/or cost), one will be quickly convinced that lugging more than a tonne of metal with them for personal transport is simply not sustainable (regardless the energy source). Unless, we made sure only the privileged (let say Australia) have...
by Rusdy
Mon, 10 Apr 2017, 18:12
Forum: General EV Discussion
Topic: Tesla's Place in history
Replies: 26
Views: 4319

Tesla's Place in history

But none of this matters compared to Fukushima. Not even global warming. That's why we need more Fukushima and Trump. Actually, Trump is too sissy. We need more dictators (the North Korea style) that have guts to press the nuclear warfare again. Addressing the symptom (climate change) not going to ...
by Rusdy
Fri, 07 Apr 2017, 00:25
Forum: General EV Discussion
Topic: Tesla's Place in history
Replies: 26
Views: 4319

Tesla's Place in history

It's a pity Evans Electric never took off. I thought this little company would take over the world couple years ago. Looks like the battery needs to be cost effective first before anything else .
by Rusdy
Thu, 23 Mar 2017, 00:11
Forum: Batteries, charging, management and monitoring
Topic: Some real data on battery fires
Replies: 4
Views: 872

Some real data on battery fires

Wow, thanks for the link to the report. I've been asking myself about this for a long time now, at last! There are lots of other reports regarding toxicity, but simply too academic and made my head hurts.

Especially regarding HF concentration. It's good to see it in comparison with other gases.
by Rusdy
Thu, 16 Mar 2017, 18:50
Forum: Batteries, charging, management and monitoring
Topic: PV diversion EV charger
Replies: 10
Views: 1648

PV diversion EV charger

Yea, that's the pity bit. I'm expecting the charger to cut out completely (or as an option) when there is no spare 1500W. Better than nothing. I presume this is the limitation set by the charging standard (chademo / AC fast charger / etc).
by Rusdy
Thu, 16 Mar 2017, 16:40
Forum: Batteries, charging, management and monitoring
Topic: PV diversion EV charger
Replies: 10
Views: 1648

PV diversion EV charger

At last! I've been waiting for this product for a looooong time. Looks like I don't need to do my own cowboy style charger and learning the ChaDemo protocol Image
by Rusdy
Wed, 15 Mar 2017, 00:12
Forum: AEVA WA Branch
Topic: Electrikhana 2017
Replies: 8
Views: 2603

Electrikhana 2017

First electrikhana I missed Image
by Rusdy
Thu, 23 Feb 2017, 16:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2479
Views: 488012

PIP-4048MS inverter

" Its like there are positives and negatives of a higher frequency inverter over the lower frequancy selectronics Boy oh boy, the more reason I can't wait for the high voltage DC bus standard to come out (in the US 380VDC seems to be proposed). Although in my opinion 325VDC is much more do-able (st...
by Rusdy
Wed, 22 Feb 2017, 17:30
Forum: General EV Discussion
Topic: Mazda's dinosaur declaration
Replies: 4
Views: 984

Mazda's dinosaur declaration

Good marketing though. There are lots of people out there simply love mechanical things instead. Mazda should've call it 'DinoBluArt' Image
by Rusdy
Wed, 22 Feb 2017, 17:26
Forum: EV Motoring
Topic: Quant 48VOLT
Replies: 5
Views: 1688

Quant 48VOLT

Johny wrote: ...and the rest is internal miscommunication.


Sounds like it. Maybe, just maybe, the journalist's source mistakenly sent him the 48V standard instead? 48V Standards
by Rusdy
Tue, 24 Jan 2017, 20:06
Forum: BMW
Topic: Crashed my i3 - 9.40pm Sunday 22 Jan
Replies: 30
Views: 7163

Crashed my i3 - 9.40pm Sunday 22 Jan

Ouch! front end collision then? Sore sternum from the seat-belt? Air-bag deployed? Hope you recover soon!

How's your i3 faring?
by Rusdy
Thu, 17 Nov 2016, 00:20
Forum: Mitsubishi
Topic: Noises on!
Replies: 14
Views: 1727

Noises on!

I might consider some business to rent my low-speed-noise for advertising.

https://www.youtube.com/watch?v=n17B_uFF4cA
by Rusdy
Thu, 29 Sep 2016, 22:35
Forum: Batteries, charging, management and monitoring
Topic: Replacement Tesla 70kWh only 20kg
Replies: 9
Views: 2222

Replacement Tesla 70kWh only 20kg

This is the scientist that said: "Krstic says: "Right now, electric car batteries are acid-based ..." Okaaay sir scientist. You probably spent too long in your lab and forgot to catch up with the development of lithium batteries by your peers. However, I was challenged by the toxicity statement thou...
by Rusdy
Thu, 01 Sep 2016, 16:35
Forum: Members Machines
Topic: Family car to EV Mazda Tribute conversion
Replies: 21
Views: 6092

Family car to EV Mazda Tribute conversion

I am planning to drive not more than 30k average. Would that mean topping up at 30-50% each time? Topping up as often as you can definitely help with the longevity. Also, it would be nice if your BMS and the charger can talk to each other, that is to switch off at 80%SOC (around 4.00 Volt per cell)...
by Rusdy
Wed, 31 Aug 2016, 21:03
Forum: Members Machines
Topic: Family car to EV Mazda Tribute conversion
Replies: 21
Views: 6092

Family car to EV Mazda Tribute conversion

Yup, that's what I agreed as well until I had that graph above. Internal resistance can't simply increased by having a service. Maybe, just maybe, the software update on the Leaf somehow introduce different scaling on how they measure the current, hence, skewing the internal resistance algorithm. Ma...
by Rusdy
Wed, 31 Aug 2016, 19:40
Forum: Members Machines
Topic: Family car to EV Mazda Tribute conversion
Replies: 21
Views: 6092

Family car to EV Mazda Tribute conversion

Sorry Rusdy I know I'm going to say "Oh yes" when you tell me - but what does the Hx line represent. No idea. I've searched high and dry for the Hx to no avail. Some said the internal resistance, but, after my own experience above, this doesn't make sense. The original programmer for LeafSpy left t...
by Rusdy
Wed, 31 Aug 2016, 18:01
Forum: Members Machines
Topic: Family car to EV Mazda Tribute conversion
Replies: 21
Views: 6092

Family car to EV Mazda Tribute conversion

I hope - like all - to get a reasonable range of 50-80km, and a max speed of about 90-100kmh.    I assume your Leaf battery is the newer chemistry (not from 2011-2012 Leaf)? Your expectation should be realistic. What I've found from my Leaf, the degradation is quite fast (relative to LFP, like John...
by Rusdy
Mon, 01 Aug 2016, 16:34
Forum: Nissan
Topic: I bought a ...... Leaf!
Replies: 33
Views: 5558

I bought a ...... Leaf!

I got a quote for a 40,000 service for my LEAF on Friday ($321.00). When I asked what would be done in the service they said "I don't know ". I Checked the service manual and it was just a few inspections and a HV battery check. Looks like daylight robbery to me. This kind of service really discour...
by Rusdy
Mon, 01 Aug 2016, 16:32
Forum: Batteries, charging, management and monitoring
Topic: Modifying Tesla battery modules
Replies: 14
Views: 3896

Modifying Tesla battery modules

But the difference between LiFePO4 and lithium cobalt chemistries is comparable to wet wood and gasoline. I had an old TS 160Ah LiFePO4 cell *explode* in my car around 8 weeks ago. this was whilst I was driving. The consequence - my 2008 Mazda 2 now has it's "new car" smell back again I agree, igni...
by Rusdy
Wed, 27 Jul 2016, 19:00
Forum: General EV Discussion
Topic: How many ev/phev owners and drivers/riders
Replies: 23
Views: 3312

How many ev/phev owners and drivers/riders

1. a Leaf, and;
2. an electric bicyle (powered by 80Watt solar panel on the shed with DIY MPPT)

No other explosive engine in the house. Even the garden power tools are all electric Image