Search found 509 matches

by 4Springs
Tue, 05 Mar 2019, 16:55
Forum: Batteries, charging, management and monitoring
Topic: E63 LG 63Ah NCM battery group buy
Replies: 8
Views: 400

Re: E63 LG 63Ah NCM battery group buy

rutuja wrote:
Tue, 05 Mar 2019, 14:37
An excessive number of different activities in a hurry...
We appear to have some kind of re-posting bot here? Interesting...
by 4Springs
Fri, 22 Feb 2019, 13:45
Forum: Batteries, charging, management and monitoring
Topic: E63 LG 63Ah NCM battery group buy
Replies: 8
Views: 400

Re: E63 LG 63Ah NCM battery group buy

Mmmmm.... If I've done my sums right, a 150V 37kWh pack would cost about $10k (AUD). It would weigh about 160kg without the mounting hardware. That's 166 cells. I'd decrease the weight of my vehicle and increase the range to about 150km. I might be in the market for a new battery soon, and this is v...
by 4Springs
Mon, 11 Feb 2019, 14:08
Forum: Hyundai
Topic: Hyundai Australia Kona EV info
Replies: 89
Views: 12721

Re: Hyundai Australia Kona EV info

reecho wrote:
Sun, 27 Jan 2019, 21:31
According to a dealer in Melbourne pre orders have started.
Are they ordering the tow kit?
by 4Springs
Mon, 11 Feb 2019, 14:06
Forum: General EV Discussion
Topic: Highway travelling at slower speeds
Replies: 5
Views: 264

Re: Highway travelling at slower speeds

I'd echo everyone else here. We travelled on that road up to Canberra last year. As I was driving I was thinking about the trip that you are thinking of undertaking. There are just so many vehicles! Even something going 90kph slows the whole four lanes down, as the cars from the left lane move over ...
by 4Springs
Sat, 02 Feb 2019, 17:48
Forum: For Sale/Wanted
Topic: BMW i3 Rex wreck
Replies: 6
Views: 495

Re: BMW i3 Rex wreck

Location?
by 4Springs
Tue, 29 Jan 2019, 13:55
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

I guess the circuitry difference between top-balancing and bottom-balancing is too great to be able to include both and switch between the two? No difference in hardware, the difference between top and bottom balancing is all in the software. Nevilleh's original BMS was setup for bottom balancing, ...
by 4Springs
Sun, 27 Jan 2019, 15:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

Good news! 10 people have decided to jump in on the order for these boards, meaning over 200 of the celltop module boards to manufacture. This has dropped the unit price dramatically. So dramatically that it has now become economical to get some of the components pre-assembled. The new prices are: M...
by 4Springs
Sat, 26 Jan 2019, 12:28
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

200mA is ok for a small capacity cell but wouldn't do much for a 200Ah or 400Ah cell. This is the real difference in balancing house battery cells against EV battery cells, the house battery is big capacity but low voltage and top balanced rather than bottom balanced. Thanks Terry, you've given me ...
by 4Springs
Thu, 24 Jan 2019, 17:23
Forum: Batteries, charging, management and monitoring
Topic: Two chargers blow simultaneously.
Replies: 17
Views: 455

Re: Two chargers blow simultaneously.

Interesting coulomb - are you suggesting that TC chargers don't come with the Enable / voltage divider option any more? This seems to be the case, yes. I left room in my vehicle for a third(!) charger, with the idea that I could hook up to 10, 15 or 30A supplies like Paul has done. The new chargers...
by 4Springs
Fri, 11 Jan 2019, 17:25
Forum: Holden/Chev Volt
Topic: Chevy Bolt motor / transaxle teardown
Replies: 3
Views: 517

Re: Chevy Bolt motor / transaxle teardown

jonescg wrote:
Wed, 09 Jan 2019, 11:40
13 moving parts if you're generous.
I count each ball/roller in a bearing as a separate moving part...
by 4Springs
Sat, 05 Jan 2019, 17:50
Forum: General EV Discussion
Topic: Question for battery experts: proper inverter?
Replies: 4
Views: 496

Re: Question for battery experts: proper inverter?

will a 200w inverter provide enough power to run the apap w/o humidifier? It would help if you could find the power rating on the device. Or even better, measure how much current it draws when operational. You can get 12V cpap machines, which would be more efficient and probably draw less power. Mi...
by 4Springs
Wed, 28 Nov 2018, 17:16
Forum: Other
Topic: When someone asks "But show me an EV that can tow a boat to Broome!" Show them this...
Replies: 8
Views: 832

Re: When someone asks "But show me an EV that can tow a boat to Broome!" Show them this...

The specs say:
Trailer Weight Rating (lbs): 5000kg
I'm guessing it actually means 5000lbs, or 2267kg. Even this is a very good towing capacity.
And 330 litres in the froot!
And AC power outlets!
by 4Springs
Mon, 26 Nov 2018, 18:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

Hi, I am interested. I have my old Imiev battery, but I need to find a compatible Grid connect inverter/charger. I looked at the Schneider, but they do not recommend Lithium Ion batteries with their chargers when grid connected. (But OK if charging direct off the panels, which is not how my system ...
by 4Springs
Sun, 25 Nov 2018, 12:59
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

Ok, I've finally got around to pricing these. The master module will be about $100 including the board (about $20) and all components. You need one of these - or two if you want a spare. The cell-top module will be about $6 each including the board (about $2) and all components. You need one of thes...
by 4Springs
Thu, 22 Nov 2018, 12:06
Forum: General EV Discussion
Topic: Bring on the BERM please
Replies: 22
Views: 1357

Re: Bring on the BERM please

Just a postscript on catcher for Ryobi 480e. There's this video showing that a grass catcher is actually available (in US at least): Ryobi RM480e Bagger Attachment with Blade Swap https://www.youtube.com/watch?v=SI4SiwKHLqg Thanks for that. Now I look, it even says that the 'bagger' is available on...
by 4Springs
Thu, 22 Nov 2018, 07:11
Forum: General EV Discussion
Topic: Bring on the BERM please
Replies: 22
Views: 1357

Re: Bring on the BERM please

brendon_m wrote:
Thu, 22 Nov 2018, 06:55
4 x 75ah 48v included. For $3999usd ($5500aud). Seems too cheap to have a mower bolted around it
You mean the Ryobi? It is lead-acid. Gives better traction!
by 4Springs
Thu, 22 Nov 2018, 06:43
Forum: General EV Discussion
Topic: Bring on the BERM please
Replies: 22
Views: 1357

Re: Bring on the BERM please

Been waiting for an electric ride-on, keeping our ageing petrol one going for 'just one more season' for the last few years.
Would like a catcher, but otherwise that Ryobi looks good.
by 4Springs
Tue, 20 Nov 2018, 17:54
Forum: General EV Discussion
Topic: Numberplate ID for EV and Hydrogen Vehicles
Replies: 11
Views: 689

Re: Numberplate ID for EV and Hydrogen Vehicles

Interesting. We have no such licence plate stickers in Tasmania. I was recently informed by an emergency services guy that he thought it was crucial. His point was that if a car has 'stopped' (i.e. no noise from the engine bay), an emergency services person doesn't expect it to go again. If I suffer...
by 4Springs
Mon, 19 Nov 2018, 18:51
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 212
Views: 13514

Re: Prelude conversion project - some questions

Controller info in this post.
viewtopic.php?f=18&t=5249#p64990
There are simpler controllers around if you just run the thing flat out.
by 4Springs
Sun, 18 Nov 2018, 09:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

Have you thought about making the board shorter but wider with all the components mounted to either the positive end or the negative end, then a cable to connect to the other terminal? That way the board would fit between the terminal and vent and the cable would go around the vent and make the mod...
by 4Springs
Sat, 17 Nov 2018, 07:43
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 212
Views: 13514

Re: Prelude conversion project - some questions

Those NO thermostats - you stick them to the base or side of the charger? Indeed. Find an appropriate spot that gets warm once you've hooked everything up and see how the coolant works. I have two chargers, and I've added fans to both. I think in both cases I used screws to attach a thermostat to t...
by 4Springs
Fri, 16 Nov 2018, 17:43
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 212
Views: 13514

Re: Prelude conversion project - some questions

Air Conditioning compressor - 350 V DC powered, uses 12 V signal and PWM to vary speed. Might be just as easy to set it to full speed and switch it on or off from the dash. I used an off-the-shelf controller for this, mine uses a 0-5V signal (from memory) to control the speed based on the temperatu...
by 4Springs
Fri, 16 Nov 2018, 17:26
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 212
Views: 13514

Re: Prelude conversion project - some questions

The water heater should be pretty straight forward, but I think I will need a small metal header tank. Any ideas on what to use as a header tank? A metal one will leak heat more than a plastic one. I ended up using a garden hose T-piece with the T pointing up. To that I attached a small plastic jui...
by 4Springs
Fri, 09 Nov 2018, 18:13
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

Hi, just wondering how this project is going. Have you had success in building these boards? Just in case you have,did you make some spares that would be for sale? I haven't done anything further yet, other projects have taken priority. I hope to get back to it within a couple of months. Next step ...
by 4Springs
Tue, 09 Oct 2018, 05:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: Low Cost BMS for Home Storage Batteries
Replies: 31
Views: 2924

Re: Low Cost BMS for Home Storage Batteries

What I would like to know is if I can modify this BMS to use with the Imiev batteries, that I think are in blocks of 4 cells (I will know more when I get the battery pack back). Yes, I can't see why not. They have been used (so far) on LFP cells, I imagine that the iMiEV cells would be a higher vol...