Search found 2531 matches

by weber
Wed, 17 Apr 2019, 19:50
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

I'm assuming the 10 yrs is calendar age and not used cycle life. How many cycles do you think you got out of the 40 Ah Sky Energy LFP cells? Probably only 500 cycles. 700 at the most. I think most of the ageing has been due to time and temperature. They spent the first 3.5 years of their life on a ...
by weber
Wed, 17 Apr 2019, 09:31
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 4
Views: 148

Re: PIP-5048MK inverter

Welcome suorama apam and Robbe01 . Thanks for your input. I started this new topic for the PIP-5048MK (Axpert King 5K) so your posts don't get lost in the huge PIP-4048/5048MS topic. I'm sure we'll be hearing a lot more about the MK in future. Yes. Please let your suppliers know about the problems y...
by weber
Wed, 17 Apr 2019, 09:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2650
Views: 385845

Re: PIP-4048MS and PIP-5048MS inverters

Welcome @suorama @apam and @Robbe01. Thanks for your input. I've started a new topic for the PIP-5048MK (Axpert King 5K) and moved your posts there, so they don't get lost in this huge topic. I'm sure we'll be hearing a lot more about the PIP-MK in future.
by weber
Tue, 16 Apr 2019, 16:37
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

Well sleuthed Richo. For those asking about datsheets, here's one for an Altair Nano 60 Ah prismatic LTO. http://altairnano.com/wp-content/uploads/2015/11/60Ah-Cell-Data-Sheet.pdf And here's one for a 40 Ah 66160 LTO that is probably not from Yinlong. https://files.ev-power.eu/inc/_doc/attach/StoIte...
by weber
Sun, 14 Apr 2019, 13:28
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

Thanks for trying. It's just bad luck with the available dimensions in the MX-5.
by weber
Sun, 14 Apr 2019, 11:14
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

Stacking them 17 high doesn't leave room for aluminium bar or rectangular-tube to distribute the strapping pressure. 16 is the max. Removing the tubes from between rows of cells not only reduces cooling but also structural strength. Reducing the manifolds from complete end-plates to individual squar...
by weber
Sun, 14 Apr 2019, 11:07
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

Looking through the build I'm thinking what you need is a liquid battery pack that can just be poured into the car to fill all the nooks and crannies Hee hee. You're sooo right. :) Jeff Owen and Mike Van emmerik did a brilliant job of helping me squeeze cells into every nook, and quite a few cranni...
by weber
Sun, 14 Apr 2019, 09:52
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

I wrote the following before receiving your latest above. I believe we can only stack the cells 16 high in the 215 height because we need a 16 mm overhead for strapping and manifold. n x 12 + 16 I see from your other thread, https://www.aeva.asn.au/forums/viewtopic.php?p=70178#p70178 that the cells ...
by weber
Sun, 14 Apr 2019, 06:49
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

Yes Mike, I'd want to preserve something like that. I'm willing to stretch it to 34 NMC cells (143 V) between contactors for this exercise. The limit of 28 LFP cells was only because we had many rows of 14 cells due to the chassis rail spacing, so 28 was convenient. We could have gone to 32 LFP cell...
by weber
Sat, 13 Apr 2019, 21:28
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

That's right. Thanks Brendon. The sizes of the other battery boxes can be calculated in one dimension as as 123.5 mm per row plus 6 mm overhead, and in the other dimension as 46 mm per cell plus 34 mm overhead. I'd prefer not to use the 908 x 130 space behind the rollbar as it gets too hot there, fr...
by weber
Sat, 13 Apr 2019, 18:23
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

Your modules look good too Chris, but I'm afraid the price is OOTQ. In case Francisco can figure a way, here are the MX-5 dimensions: All the battery spaces in the MX-5 are 215 mm high. The existing cells are a total of 218 of 40 Ah LFP (nom 3.2 V), all in series. The 6 largest spaces can be seen he...
by weber
Sat, 13 Apr 2019, 14:32
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

Just remember that the shelf life of the [LTO] battery won't be much better than any other battery. Hi Richo. Can you tell us why you think that? I've been searching, and I can find precious little about the calendar life of LTOs. It just seemed to me that since they are considered to withstand hig...
by weber
Sat, 13 Apr 2019, 13:26
Forum: Batteries, charging, management and monitoring
Topic: Battery Modules Questions.
Replies: 33
Views: 1014

Re: Battery Modules Questions.

I've been meaning to post here ever since Francisco visited me many weeks ago. I wanted to know if I could use his battery modules to replace the ageing pack in the MX-5. And Francisco was keen to know more about the LyteFyba BMS. It was a very fruitful meeting. After having seen his samples, as wel...
by weber
Tue, 09 Apr 2019, 14:40
Forum: Members Machines
Topic: Weber and Coulomb's MX-5
Replies: 1698
Views: 310456

Re: Weber and Coulomb's MX-5

I have 3 of those 40Ah Sky Energy cells if you want them. I check their voltage but they should be at about 3.2V. Haven't used them since the 4th one in the set died. Thanks wovenrovings. That's very kind. I'm guessing they would be of similar vintage to those in Mexy (Mid 2009) and so might have a...
by weber
Wed, 03 Apr 2019, 13:26
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

In anycase - back on topic - I did find a youtube video of Yinlong doing destructive tests on thier LTO battery. Bit of a let down - no bangs, or balls of fire. https://www.youtube.com/watch?v=eAUYbSDEy6I Useful video. But I didn't see the point of the "Gasoline burning test". There was no way to t...
by weber
Wed, 03 Apr 2019, 13:14
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

Richo wrote:
Wed, 03 Apr 2019, 13:04
weber wrote:
Tue, 02 Apr 2019, 14:22
And I could paint the word "capacitor" on my cat. :)
Would you wash your cat after ...?
Well, I wouldn't want to to in-capacitate it. Ba-dum tish.
by weber
Tue, 02 Apr 2019, 14:22
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

Okay but the box, even the burnt ones, says capacitor. And I could paint the word "capacitor" on my cat. :) Did Arvio actually claim/admit somewhere they are really ALL LTO's No. Of course not. or are we still basing it on our assumptions? I've always allowed that there might be a few real supercap...
by weber
Mon, 01 Apr 2019, 20:33
Forum: Members Machines
Topic: Weber and Coulomb's MX-5
Replies: 1698
Views: 310456

Re: Weber and Coulomb's MX-5

A very timely post Weber. I am pulling my hair out trying to get an adaptor plate for the Prelude made. I've reached the point where nobody has been able to say with confidence that they a) have the tools and skills or b) have the time. I was curious as to what the process is from start to finish, ...
by weber
Mon, 01 Apr 2019, 20:01
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

Well the whole system was based on a patented BMS. Hi Richo. Good point. So there definitely was a BMS. It just didn't do its job. Dont forget that the "supercap" modules are supposed to be "supercaps". Our/my inference that these storage modules had LTO's in them is not really a reflection of LTO'...
by weber
Fri, 29 Mar 2019, 22:39
Forum: Batteries, charging, management and monitoring
Topic: EOI - New Yinlong LTO cells Australia
Replies: 41
Views: 1272

Re: EOI - New Yinlong LTO cells Australia

The ones that Arvio tested are LTOs. I understand Arvio's response to these South African photos was that these were first generation "supercapacitors" and that this would never happen with the second generation ones they have. It's possible that these first gen used a different lithium-ion chemistr...
by weber
Fri, 29 Mar 2019, 21:19
Forum: Members Machines
Topic: Weber and Coulomb's MX-5
Replies: 1698
Views: 310456

Re: Weber and Coulomb's MX-5

I had to share this wonderful photo taken today at Electronic Innovations, by Daniel Pink (the son of founder Ross Pink), on the occasion of Warrick Beatie's retirement. From left to right: Warrick, Dave, Bruce, Eric, Ross and me. I was Electronic Innovations' first employee, 40 years ago. Ross taug...
by weber
Sat, 09 Mar 2019, 07:10
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2650
Views: 385845

Re: PIP-4048MS and PIP-5048MS inverters

1. I've noticed since re-commissioning the inverter that U2 (SCC firmware version which is 4.12) in the LCD menu only shows up if the solar panels are actually producing power, it is absent and does not report if I scroll through the menu in the evenings. Is this normal, I never took note before? Y...
by weber
Sun, 03 Mar 2019, 08:24
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 250
Views: 15919

Re: Prelude conversion project - some questions

Some time back I asked Weber for help with finding the best sources of switched +12 V and a +12 V starter signal. Chris, You didn't say what I told you, but allowed the reader to assume that I recommend the highlighted routes on your diagram. I did not. Here's what I wrote in email (bold added): Us...
by weber
Tue, 12 Feb 2019, 13:51
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2650
Views: 385845

Re: PIP-4048MS and PIP-5048MS inverters

Great work coulomb discovering that battery voltage calibration "nudge" command, BTA<xxx>, and figuring out what it does . I found two versions of the BTA command that let you ignore all that complicated hexadecimal CRC stuff. You just need to have a computer running your favourite terminal program,...
by weber
Fri, 08 Feb 2019, 15:51
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2650
Views: 385845

Re: PIP-4048MS and PIP-5048MS inverters

Release Version of Patched Firmware 72.20e for some PF1.0 models (now with KettleKomp™) [Edit: On 13-Apr-2019 we replaced beta 72.20e here, with release 72.20e. The only change was the first letter of the version number (from B to L). This was after 2 months and 35 downloads of the LFP version and ...