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by coulomb
Today, 08:04
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 475
Views: 52699

Re: Aftermarket iMiEV battery upgrade project

What I was thinking was that if we intercept the cell voltage values and any message going to the BMU that makes it think the battery is different and replace it with what the BMU expects to see and then send out what we want the car to see then it may fix the problem. So it could be fixed by a man...
by coulomb
Today, 07:00
Forum: Renault
Topic: Charging cable adaptor
Replies: 3
Views: 45

Re: Charging cable adaptor

Issue is you need electronics to talk to the car to initiate the charge and set its amps. Why is that, Bryce? Surely all EVSEs come with control pilot electronics built-in. I think I must be missing something here. Edit: in re-reading, I think what you're saying is that you need more than just the ...
by coulomb
Today, 06:34
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 475
Views: 52699

Re: Aftermarket iMiEV battery upgrade project

@coulomb Do you know who decides the battery is 49Ah? Is it the BMS in the battery or the car computer? It pretty much has to be the BMU, since that 49Ah (initially) figure is reported as a value of the BMU by the scanners. It's possible that the EV-ECU has some influence over the result. As far as...
by coulomb
Sat, 23 Jan 2021, 19:40
Forum: General EV Discussion
Topic: Tips for a SW WA trip
Replies: 12
Views: 154

Re: Tips for a SW WA trip

You may want to compare coverage of Telstra retail versus Telstra wholesale network coverage. It's pretty dramatic at an Australia-wide scale. See the second image in this web page: https://www.whistleout.com.au/MobilePhones/Guides/Telstra-network-coverage-vs-ALDI-Woolworths-Belong-Boost Boost is ap...
by coulomb
Sat, 23 Jan 2021, 16:24
Forum: General EV Discussion
Topic: Tips for a SW WA trip
Replies: 12
Views: 154

Re: Tips for a SW WA trip

Belong is also cheap as. I pay $10/month for unlimited calls and text, and 1Gb data, all on the Telstra network Actually, it's the Telstra Wholesale network, which seems to be a cut down version of the proper Telstra network. I suspect some of the Telstra frequencies aren't allowed. [ Edit: it seem...
by coulomb
Sat, 23 Jan 2021, 15:26
Forum: For Sale/Wanted
Topic: Rover 75 Connoisseur - possible glider?
Replies: 5
Views: 95

Re: Rover 75 Connoisseur - possible glider?

While we wait for Rob to post actual photos, here is the Wikipedia photo and article:

Image
by coulomb
Fri, 22 Jan 2021, 21:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 411
Views: 50920

Re: PIP-5048MK inverter

affer wrote: Fri, 22 Jan 2021, 17:19 the panels is installed on a 5 degree roof pointing west. so no optimal south 20 degrees here (what is recommended for my lat-long)
I suspect that will save you from too many overshoots. And hopefully for the sin of 3S panels (assuming 72-cell). Does it ever get near freezing where you are?
by coulomb
Thu, 21 Jan 2021, 08:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: Electricity using low grade heat
Replies: 5
Views: 87

Re: Electricity using low grade heat

Just a few more points; I realise you're going to push back against criticism. So I'll try to make it simple. You mention generating 8 m/s of wind with 500 W, and how 8 m/s can generate some 3 kW. But the wind generated from the 500 W blower won't have the power behind it to generate anything like 5...
by coulomb
Thu, 21 Jan 2021, 06:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Electricity using low grade heat
Replies: 5
Views: 87

Re: Electricity using low grade heat

Please explain how this differs from other perpetual motion machines. You can't get more power from a generator than it takes to generate the wind. It's basic conservation of energy.

The topic mentions low grade heat. Where does this come into your proposed machine?
by coulomb
Wed, 20 Jan 2021, 09:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: Voltronic Power Axpert MAX 7.2k Details
Replies: 5
Views: 96

Re: Voltronic Power Axpert MAX 7.2k Details

Firmware found on the internet ;) : https://mega.nz/file/sFMXBCjS#aurxi7YDrssifgeRlyEASRHdUig7CAn-_6nlumyfrh0 I can confirm that this appears to be a genuine DSP firmware for Axpert Max, version 45.06. This is moderately old now, so of little interest. There is a folder for updating the removable d...
by coulomb
Mon, 18 Jan 2021, 20:46
Forum: Batteries, charging, management and monitoring
Topic: k226e01 Battery's
Replies: 8
Views: 160

Re: k226e01 Battery's

correct, charging 3.6V and current cut off at 2.5 seems to be giving me 7.4 Wh i suspect that is ok as new battery is 3.65V to 2 V is 10.22 Wh. do i have my thinking correct? Ah, yes. I thought their 3.2 Ah cut off at 2.5 V, but you're right it cuts off at 2.0 V. Even so, the difference it slight; ...
by coulomb
Mon, 18 Jan 2021, 15:33
Forum: Batteries, charging, management and monitoring
Topic: k226e01 Battery's
Replies: 8
Views: 160

Re: k226e01 Battery's

damaged or non charging packs. Ah! My bad. But note that cells that come from a bad pack may have been damaged by staying too long at a low state of charge. Especially if the BMS has "melted". I am charging to 2.6 with a cut off at 2.5 volts and am getting a constant correct of 7.4 Wh per cell. I a...
by coulomb
Mon, 18 Jan 2021, 10:07
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPP HV2-5048 Earthing of output
Replies: 14
Views: 198

Re: MPP HV2-5048 Earthing of output

TyTower wrote: Sun, 17 Jan 2021, 19:03 I guess if the plug outlet earth is joined to the earthing network as it should be then the RCD would operate correctly as it is shown above as no current flows to earth unless in a fault condition. Am I right in that?
Yes, exactly.
by coulomb
Mon, 18 Jan 2021, 10:06
Forum: Batteries, charging, management and monitoring
Topic: k226e01 Battery's
Replies: 8
Views: 160

Re: k226e01 Battery's

Now I'm working though the battery packs that didn't charge up or were damaged the idea is hopefully use them in a motor bike. I think you might have done better keeping the good ones for the motorcycle, and use the damaged ones in hour house energy system. In a vehicle, you want to discharge the b...
by coulomb
Sun, 17 Jan 2021, 22:16
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 656
Views: 72312

Re: Prelude conversion project - some questions

jonescg wrote:
All those reddish cells remind me of twopenny bungers (fireworks). Are you totally sure that you didn't get just one or two if those cells flipped the wrong way? :shock: 🧨🧨🧨

[ Edit: red → reddish ]
by coulomb
Sun, 17 Jan 2021, 17:14
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPP HV2-5048 Earthing of output
Replies: 14
Views: 198

Re: MPP HV2-5048 Earthing of output

down stream meaning ? After the RCD (on the load side of the RCD). If the inverter produced A/C goes through an RCD before the power points and the earthing has a neutral link where will current flow? Your diagram does not show a neutral to earth link on the load side of the RCD. If there is, then ...
by coulomb
Sat, 16 Jan 2021, 09:26
Forum: Renewable Energy and Storage (Non-EV)
Topic: battery farm on site of old coal power stations
Replies: 6
Views: 116

Re: battery farm on site of old coal power stations

The station itself would likely be converted to a synchronous condenser too, Interesting. I imagine that the alternator part of a power station would last much longer than the boiler and turbine parts; the latter operate at high temperatures. I'm guessing that the slip rings and associated brushes ...
by coulomb
Sat, 16 Jan 2021, 07:35
Forum: Renewable Energy and Storage (Non-EV)
Topic: battery farm on site of old coal power stations
Replies: 6
Views: 116

Re: battery farm on site of old coal power stations

My initial thought was what a good move. I thought so too. Especially since that coal fired station is Australia's largest, and isn't due to be decommissioned for many years yet. It seems that coal fired power generators get rather unreliable near the end of their life, so Origin want it the batter...
by coulomb
Fri, 15 Jan 2021, 12:06
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPP HV2-5048 Earthing of output
Replies: 14
Views: 198

Re: MPP HV2-5048 Earthing of output

MPP HV2-5048 Earthing of output I have this inverter on a 48v battery and producing 240 volts A/C. ... Before doing so I ran the inverter and measured the A/C voltage from the unconnected earth to the earth ground peg proper and found it had a 48v A/c potential. Is this correct? Is it how it should...
by coulomb
Thu, 14 Jan 2021, 16:28
Forum: Mitsubishi
Topic: Minicab MiEV support with charger/blown capacitors
Replies: 32
Views: 313

Re: Minicab MiEV support with charger/blown capacitors

How come the coolant needs to be purged btw? The charger is water cooled. To take the charger housing out, you have to disconnect the hoses, obviously. When you put the charger back in and reconnect the hoses, if you do nothing else, air will get into the hoses, and the air will circulate through t...
by coulomb
Thu, 14 Jan 2021, 09:36
Forum: Mitsubishi
Topic: Minicab MiEV support with charger/blown capacitors
Replies: 32
Views: 313

Re: Minicab MiEV support with charger/blown capacitors

The voltage from the 12V when off is 12.7 and when on 14.7 Ok, so no need to worry about the DC-DC converter, and the MCU fuse is intact. I should just take out the two PCBs in the charger and take them to someone who knows what they're looking at/for. Sorry I'm at a bit of loss right now and feel ...
by coulomb
Thu, 14 Jan 2021, 09:32
Forum: Mitsubishi
Topic: Minicab MiEV support with charger/blown capacitors
Replies: 32
Views: 313

Re: Minicab MiEV support with charger/blown capacitors

walkingthedog wrote: Thu, 14 Jan 2021, 07:00 Could this be anything telling? Or just usual heat?
Disconcerting as it is, this is apparently normal, at least for this charger model. Hopefully the new model that replaces it handles the heat better.
by coulomb
Thu, 14 Jan 2021, 09:30
Forum: Mitsubishi
Topic: Minicab MiEV support with charger/blown capacitors
Replies: 32
Views: 313

Re: Minicab MiEV support with charger/blown capacitors

Is there a trick to disconnecting these? Yes, they can be a pain, even for seasoned car people. There is usually a tab that needs to be pressed, in such a way that it clears some piece of plastic. There may be a second tab on the other side, that has to be pressed at the same time. Nearly every con...
by coulomb
Thu, 14 Jan 2021, 08:23
Forum: Mitsubishi
Topic: Minicab MiEV support with charger/blown capacitors
Replies: 32
Views: 313

Re: Minicab MiEV support with charger/blown capacitors

Can I only access the third PCB by taking the whole casing out? I don't own an iMiEV, but I'd say yes, you need to take the whole casing out. I assumed you already did that for the charger, but perhaps it can be accessed with the case still in the car. Is there anything in the in the third PCB that...