Search found 1144 matches

by T1 Terry
Tue, 12 May 2020, 13:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 20
Views: 1544

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

Lithium batteries inherently have a very low internal resistance. if you attempt to parallel multiple 12v batteries, one battery will do all the work until it fails and that will kill the other batteries in parallel. This also goes for the maximum current load and continuous current load, they will ...
by T1 Terry
Fri, 08 May 2020, 14:15
Forum: Tesla EVs
Topic: Hail Damaged Peformance Model 3
Replies: 7
Views: 532

Re: Hail Damaged Peformance Model 3

Rather expensive for a parts only purchase that would require an alternate motor controller etc.

T1 Terry
by T1 Terry
Thu, 07 May 2020, 10:30
Forum: Tesla EVs
Topic: Hail Damaged Peformance Model 3
Replies: 7
Views: 532

Re: Hail Damaged Peformance Model 3

HuffnPuff wrote: Thu, 07 May 2020, 10:07 Can it be re-registered? There could be a problem there.
Was it sold as a repairable right off or a Statutory Write off and has Tesla black listed the vehicle?

T1 Terry
by T1 Terry
Tue, 05 May 2020, 12:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverters not accepting generator power
Replies: 6
Views: 394

Re: Inverters not accepting generator power

The last 48v system we installed has a Kubota diesel generator and it plays up big time. The input voltage will steadily climb up to 270vac and then the inverter rejects it, the generator drops back to 220vac and the whole cycle starts again. This fix in this set up is to turn the coffee machine on,...
by T1 Terry
Sat, 02 May 2020, 14:22
Forum: Holden/Chev Volt
Topic: Holden volt parts available.
Replies: 6
Views: 2132

Re: Holden volt parts available.

:lol: Why not go for the big power plant and add a 454 or what ever the big block strokers are up to these days. Add an ultra fast charger and you can add "Supercharged" into the description as well :lol: T1 Terry EDIT: Just did a Google search and it appears to be a 572 big block stroker is the lim...
by T1 Terry
Sat, 02 May 2020, 12:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPPT charger problem: Is this going to work?
Replies: 17
Views: 924

Re: MPPT charger problem: Is this going to work?

If the DC to DC works well, I'd look to getting an MPPT controller for the solar. While the DC to DC will also act as a solar controller, they aren't terribly efficient at it because that part is more of an added extra rather than a specially designed double duty unit. The other advantage is you can...
by T1 Terry
Fri, 01 May 2020, 12:55
Forum: Renewable Energy and Storage (Non-EV)
Topic: MPPT charger problem: Is this going to work?
Replies: 17
Views: 924

Re: MPPT charger problem: Is this going to work?

What brand DC to DC is it? All the ones I use either switch internally dependent on which can supply the required current the best, others use a DPDT relay driven by the starter battery so the device becomes a DC to DC charger when the voltage sensing relay closes the circuit from the start battery ...
by T1 Terry
Thu, 30 Apr 2020, 14:22
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP 2424MS MPPT
Replies: 15
Views: 1395

Re: PIP 2424MS MPPT

I have one of the PIP 60 amp MPPT stand alone controllers. Maybe I should pull the boards out and photograph them so it is possible to see what differences there are between the board incorporated into the inverter against the stand alone boards.

T1 Terry
by T1 Terry
Sun, 19 Apr 2020, 14:22
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 33245

Re: Antiscab's NWH10 Prius plugin Lithium conversion

I'm guessing all these figures are for the NWH10, The XW20 only has a max traction voltage of around the 240vdc mark, but that's a bit all over the place with regen over shoot, I've seen 280vdc on the scan gauge when the old traction battery was on its last legs yet officially it is rated at 201vdc....
by T1 Terry
Sun, 19 Apr 2020, 11:59
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 618
Views: 69219

Re: Prelude conversion project - some questions

The age old blade fuse voltage drop. Just for those less experienced but read all these threads to improve their knowledge and understanding I'll add the following rant. Better to not use blade fuses at all if you can avoid it, they are a constant source of voltage drop problems and forget about any...
by T1 Terry
Sun, 19 Apr 2020, 11:01
Forum: Holden/Chev Volt
Topic: Holden volt parts available.
Replies: 6
Views: 2132

Re: Holden volt parts available.

halfbridge wrote: Sat, 18 Apr 2020, 13:46 Hi Steve,

Did you end up selling those batteries?
Gumtree link says they are sold. I wonder what hassles and price to import a salvage Chev Bolt, the newer version with the better motor/gearbox design.

T1 Terry
by T1 Terry
Sun, 19 Apr 2020, 10:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP 2424MS MPPT
Replies: 15
Views: 1395

Re: PIP 2424MS MPPT

A question if I may, is this fix for the MPPT section or the inverter section of a PIP 2424MS? I have two dead ones here with the main positive cable to the inverter board fried so it would be an interesting project for me to attempt repairing these if things quieten down here at work.

T1 Terry
by T1 Terry
Sun, 19 Apr 2020, 09:12
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 33245

Re: Antiscab's NWH10 Prius plugin Lithium conversion

Another angle, the caps to replace the traction battery and an aux battery built using the smaller capacity LFP or LTO cells that trickle charge from the cap pack at the safe charging rate for the LFP/LTO cells so they retain their cycle life. This combination would greatly enhance the electric assi...
by T1 Terry
Sat, 18 Apr 2020, 12:40
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 188
Views: 33245

Re: Antiscab's NWH10 Prius plugin Lithium conversion

How would the Railway loco super caps be for replacing the traction battery or adding as an aux battery that lives in the spare wheel well the way Jason set my 2006 Prius up?

T1 Terry
by T1 Terry
Fri, 17 Apr 2020, 10:32
Forum: For Sale/Wanted
Topic: Ex train super caps maxwell
Replies: 8
Views: 1201

Re: Ex train super caps maxwell

Thankyou Matt, that gives me a figure to work from with 48v being the upper cut off point. Now to work out the battery pack size working backwards using an upper limit for the cells well in the safety zone for both capacitors and cells.

T1 Terry
by T1 Terry
Fri, 17 Apr 2020, 09:02
Forum: For Sale/Wanted
Topic: Ex train super caps maxwell
Replies: 8
Views: 1201

Re: Ex train super caps maxwell

Sorry for the dumb questions, but the 48v mentioned as the base block voltage, is that peak or nominal? Do capacitors even have a nominal voltage? I thought capacitors were not intended to be run near their rated voltage so if the rated voltage is 48v per pack, what would a sensible running voltage ...
by T1 Terry
Mon, 13 Apr 2020, 12:27
Forum: For Sale/Wanted
Topic: Ex train super caps maxwell
Replies: 8
Views: 1201

Re: Ex train super caps maxwell

Hi Matt, how do you calculate the equivalent Ah capacity or Wh from each of these 48v capacitors?

T1 Terry
by T1 Terry
Sun, 12 Apr 2020, 11:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: noise filtering on PIP inverter
Replies: 6
Views: 518

Re: noise filtering on PIP inverter

We had serious issues with the early PiP 24v PWM controller models and sorted it by looping each cable through a ferrite choke. I note that the Projecta mains chargers do the same thing inside the unit so they must have had issues as well. I wonder what voltage the solar input is, both open circuit ...
by T1 Terry
Tue, 07 Apr 2020, 15:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: Grid Tie inverter / charger with AGM batteries
Replies: 5
Views: 528

Re: Grid Tie inverter / charger with AGM batteries

Do you have grid tie solar at the moment? If you don't, you need to get the tick of approval for your battery system and inverter before they will let you put it on the grid, then you need to jump through the hoops to get the while lot certified. Forget about using anything second hand for a grid ti...
by T1 Terry
Tue, 07 Apr 2020, 10:15
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 316
Views: 56803

Re: 4Springs' Brumby

I seem to remember a few years back that there was a similar issue on the DIY forum regarding pouch cells, but I never followed the thread so no idea if there was a fix or reason established. I don't think they were NMC pouches either, I think they were LiFeP04 chemistry, but I could be wrong. T1 Te...
by T1 Terry
Tue, 07 Apr 2020, 10:10
Forum: For Sale/Wanted
Topic: Salvage model 3
Replies: 9
Views: 1243

Re: Salvage model 3

Current bid is at $33,500 and the auction still has 3 hrs to run, crazy. If Tesla has decided it is an unrepairable write off, then that is what it is, if Tesla has wiped their hands of it then it is only good for parts.

T1 Terry
by T1 Terry
Sat, 04 Apr 2020, 12:48
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 403
Views: 47688

Re: Aftermarket iMiEV battery upgrade project

To be honest the concept of an M4 screw into a bit of aluminium is sound - there should be more than enough contact and pressure. The problem is the really bad job they did of tapping threads - clearly done by machine with little care and attention. All the Winston cells we have been getting for th...
by T1 Terry
Fri, 03 Apr 2020, 14:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverter for 48v off grid - PIP xxxxx or something else?
Replies: 67
Views: 4522

Re: Inverter for 48v off grid - PIP xxxxx or something else?

I think you are missing the fact an MPPT controller needs to see a battery voltage so it can determine the voltage/current that is the optimum output from the input it sees. I assumed that it would just try larger and larger PWM duty cycle until the maximum current flowed. Maybe some would be surpr...
by T1 Terry
Fri, 03 Apr 2020, 13:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverter for 48v off grid - PIP xxxxx or something else?
Replies: 67
Views: 4522

Re: Inverter for 48v off grid - PIP xxxxx or something else?

The biggest problem with SBMS0 and DMPPT is that your panels got to be wired in a special way, you need a 1 panel string, a 2 panel strings, a 4 panels string ... a 8 panels string.. cause the DMPPT will "connect" those strings according to the resistive elements that are connected .. and that are ...
by T1 Terry
Thu, 02 Apr 2020, 10:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverter for 48v off grid - PIP xxxxx or something else?
Replies: 67
Views: 4522

Re: Inverter for 48v off grid - PIP xxxxx or something else?

Is there a device able to transform whatever Voltage x Amp (max 140V, max 40 Amp) to a linear Voltage x Amp .. ? In short, a DC to DC convertor with variable input and variable output, output just have to be linear, this line will depend on the resistance of the element. It seems to me that an off-...