Search found 1210 matches

by T1 Terry
Thu, 31 Dec 2020, 12:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 51
Views: 3740

Re: 12v lithium batteries can't be paralleled?

I can see from both the above posts there is a bit of posting without experience going on. I would suggest that before you post on LFP prismatics you buy some and get some experience. You may get a shock . Applying other technology experiences to them simply does not work.The jelly roll sits in a b...
by T1 Terry
Thu, 24 Dec 2020, 11:08
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 51
Views: 3740

Re: 12v lithium batteries can't be paralleled?

Seems to me there is a misunderstanding regarding the failure mode with quality LFP and LYP cells. They do not go sudden short circuit where massive current would flow into the affected cell, it is more a very slow drain that heats the electrolyte to the point it boils and gasses out through the rel...
by T1 Terry
Thu, 24 Dec 2020, 10:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 51
Views: 3740

Re: 12v lithium batteries can't be paralleled?

Are these RV failures lead gel batteries? Or LFP? If it's LFP, the best option is to parallel them at the cell level, and that means having all the battery in one place. Which is not always the easiest option. Yes, drop in lithium batteries, built in a case to look just like the AGM batteries they ...
by T1 Terry
Wed, 23 Dec 2020, 12:46
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 51
Views: 3740

Re: 12v lithium batteries can't be paralleled?

My theory, that I'm yet to figure out how to prove or disprove, is the cabling resistance is the cause of the poor load sharing. Had a customer who had nightmare dramas with 2 paralleled drop in batteries from a WA supplier. The first battery had completely failed after 7 mths but was showing all th...
by T1 Terry
Tue, 22 Dec 2020, 13:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 51
Views: 3740

Re: 12v lithium batteries can't be paralleled?

Well, I did a demo with 4 paralleled 100Ah Winston cell 4S batteries, each with a Victron 712 BMV reading the output from each battery and an inverter pulling 100 amps powering a few electrical loads. Theory says each battery should provide 25 amps, but the 100 plus people who witness the demo proje...
by T1 Terry
Thu, 17 Dec 2020, 09:47
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 195
Views: 26707

Re: Brendon_m Moke

Congratulations on getting from start to registered on the road in 2 1/2 yrs. Lots of one off designing and manufacturing involved so it wasn't a drop in my any stretch of the imagination ....... a great achievement Have I thought about doing one as well, most certainly, will it ever happen, extreme...
by T1 Terry
Thu, 17 Dec 2020, 09:24
Forum: Members Machines
Topic: Yet another Voltswagen
Replies: 14
Views: 490

Re: Yet another Voltswagen

The idea of repowering my '74 Kombi as an EV has me in two minds a bit as far as bastardising a classic v upgrading it to the 21st century and beyond. The Super bug is probably the best choice for an EV conversion because they are a bit like the T3 Kombi, they don't really get to share the classic l...
by T1 Terry
Wed, 16 Dec 2020, 10:34
Forum: Tesla EVs
Topic: Is Tesla getting away with something ?
Replies: 8
Views: 297

Re: Is Tesla getting away with something ?

I have the same mixed feelings. We are being tracked by every corporation and their dog already and we cannot avoid it without truly going off the grid and living in a faraday cage... Opening can of (philosophical) worms here :geek: . Is there anything wrong being tracked (if one does nothing wrong...
by T1 Terry
Sat, 12 Dec 2020, 08:30
Forum: Parts & Suppliers
Topic: Best seller for PIP inverters
Replies: 5
Views: 618

Re: Best seller for PIP inverters

The Victron downside, the output of say a 3000 is actually 2500w and only if you can keep the internal temp below 40*C .... a tough one when it's 45*+ ambient. They self de-rate until the temp reaches 65*C +/- around 5*C and at that point just shut down. The PIP units can handle up around the 60*C t...
by T1 Terry
Mon, 07 Dec 2020, 14:07
Forum: Parts & Suppliers
Topic: Best seller for PIP inverters
Replies: 5
Views: 618

Re: Best seller for PIP inverters

You can also buy direct from MPP Solar in Taiwan. Well, you can try, but it now seems everything goes through the local agent no matter how hard you try. We used a lot of their products when we dealt directly with the Taiwan people, but now everything goes through the local bloke things seem to get...
by T1 Terry
Sat, 05 Dec 2020, 14:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: Nickel Iron Batteries real data
Replies: 51
Views: 5756

Re: Nickel Iron Batteries real data

It is an important step and I can not see why it is not in the present manufactures instructions. I have two cell going through another 12 hour charge these were the first to drop below 1 volt on the last discharge test but I did get more than 100Ah out of them problem is its wet and cloudy for the...
by T1 Terry
Sat, 05 Dec 2020, 13:39
Forum: Mitsubishi
Topic: Parts car?
Replies: 5
Views: 374

Re: Parts car?

Hi Andrew, I've missed where you mention what car you have to match up what switches you are looking for to get the stock equipment look. My Prius has had seat heater pads added by Jason, the previous owner, he used 3 way rocker switches mounted on the side of the seat so they are not really seen an...
by T1 Terry
Mon, 16 Nov 2020, 09:43
Forum: Hyundai and Kia
Topic: SAD FRIDAY FOR KONA ELECTRIC
Replies: 26
Views: 1071

Re: SAD FRIDAY FOR KONA ELECTRIC

Not good news at all David. How do the third party person insurance rules work in Qld? In NSW, because the vehicle that hit you was not driven with the permission of the vehicle owner, the TPI mobs will wriggle out of paying a claim for injuries you received. Make sure you regularly attend physio fo...
by T1 Terry
Fri, 13 Nov 2020, 12:26
Forum: MG EVs
Topic: MG ZS EV
Replies: 93
Views: 4670

Re: MG ZS EV

The whole cheaper to be processed overseas would change and jobs would return on shore if carbon miles pricing was added to the freight costs. The $44,000 drive away is starting to get towards a competitive, well, as long as the twit in South Australia doesn't get the opportunity to add the petrol e...
by T1 Terry
Mon, 02 Nov 2020, 09:00
Forum: Renewable Energy and Storage (Non-EV)
Topic: adding a second inverter to the same solar array
Replies: 11
Views: 488

Re: adding a second inverter to the same solar array

Is anyone able to explain the reason why it cant be done, my electrical knowledge is only that great. Also is there any device i can use, maybe reverse polarity protection or something to allow it to happen. I'll try. The problem is the lack of isolation. Each side of the so-called "DC bus" connect...
by T1 Terry
Fri, 30 Oct 2020, 14:10
Forum: Members Machines
Topic: Smokinjoe's Beetle conversion
Replies: 38
Views: 2275

Re: Smokinjoe's Beetle conversion

Half ya luck, getting things engineered before they can be registered and that changes state to state so a new engineers certificate if you move interstate makes the whole vehicle modification scene a dying art over here. I'd love to do a Eureka conversion, so many drop in kits available to bolt up ...
by T1 Terry
Sun, 25 Oct 2020, 08:10
Forum: Members Machines
Topic: Smokinjoe's Beetle conversion
Replies: 38
Views: 2275

Re: Smokinjoe's Beetle conversion

[/image] Hi guys, Here's my 1970 Beetle I've been restoring for the last couple of years. In the last few months I've finished the panel and paint and now I'm starting on the fun stuff :) Mounted on the original transaxle is a Nissan leaf motor and inverter which will likely be controlled by an ope...
by T1 Terry
Wed, 21 Oct 2020, 09:29
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 34356

Re: Antiscab's NWH10 Prius plugin Lithium conversion

sadly my one uses an obscure communication language called OBD-M or multiplexed OBD, so man in the middle adjustments for me my main issue is how to the car from over charging, or overdischarging individual cells. I was looking at orion bms with the simulated virtual battery function to take care o...
by T1 Terry
Mon, 12 Oct 2020, 09:07
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 34356

Re: Antiscab's NWH10 Prius plugin Lithium conversion

Sorry if this is dragging your thread off topic Matt, feel free to delete it or move it if you want. Looking further into Mathew's post, apparently the LTO cells can handle a lot more current in both directions that the lithium ferrous cells.... or have I got that wrong? The Gen 2 samples at every s...
by T1 Terry
Sat, 10 Oct 2020, 14:50
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 193
Views: 17284

Re: jonescg's home battery storage system

Shitte, I'm glad I only do off grid solar/battery/inverter jobs, that all looks like a massive headache for very few $$ return from the grid. I do enjoy giving the grid supply the "bird" when they ask about certain items they consider are an essential, like the fire starters on the solar arrays .......
by T1 Terry
Sat, 10 Oct 2020, 14:36
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 699
Views: 78446

Re: Prelude conversion project - some questions

Have you seen the episode on the Electric Samba where he links the cells using wire he tested to fail at what ever current to create a safety fuse just in case a cell went short circuit? Have you thought about filling the whole battery with a non conductive cooling fluid so it can be cooled easily a...
by T1 Terry
Sat, 10 Oct 2020, 14:19
Forum: For Sale/Wanted
Topic: Looking for 2x calb 40a/h
Replies: 17
Views: 1665

Re: Looking for 2x calb 40a/h

PM on its way Chris

T1 Terry
by T1 Terry
Sat, 10 Oct 2020, 13:28
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 34356

Re: Antiscab's NWH10 Prius plugin Lithium conversion

The gen 2 would probably do better, does yours have the ev button? It sure does. By using two current shunts, (a 75mv 200A and a 75mv 100A) only 1/3rd of the current should go through the original battery ecu current sensor, meaning the original battery guage should be rescaled to 19.5Ah I really l...
by T1 Terry
Sun, 13 Sep 2020, 11:50
Forum: For Sale/Wanted
Topic: Looking for 2x calb 40a/h
Replies: 17
Views: 1665

Re: Looking for 2x calb 40a/h

These border issues are getting worse eh :lol: No worries, maybe a few more tired EV packs will come up in the future that I can scavenge a few cells from ... or maybe even the whole pack if the price is right :)

T1 Terry
by T1 Terry
Sat, 12 Sep 2020, 11:00
Forum: For Sale/Wanted
Topic: Looking for 2x calb 40a/h
Replies: 17
Views: 1665

Re: Looking for 2x calb 40a/h

What price each? I'll take as many as you will part with if the price is good .....

T1 Terry