Search found 3129 matches

by Richo
Fri, 20 Apr 2018, 11:40
Forum: Charging Infrastructure
Topic: Powering the home from spare EV charge?
Replies: 5
Views: 64

Re: Powering the home from spare EV charge?

I was under the impression the only batteries would be in the car. So no dedicated home storage. The ev powers the house during peak times. The grid charges the ev during off peak. You could probably do it with one cable. But have 2 connection points on the house. One for charging the other for supp...
by Richo
Thu, 19 Apr 2018, 12:25
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 23
Views: 682

Re: Prelude conversion project - some questions

I thought it was for the battery cooling.
by Richo
Wed, 18 Apr 2018, 14:25
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 184

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

Do you think that the powerwall will be like a new car so when you drive it out the parking lot half the cost will be gone?
Sell you house in 5 years will you get back $6,250?
I doubt it.
by Richo
Wed, 18 Apr 2018, 14:06
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 184

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

It's just an example - there are always variations and exceptions to everything. You don't save $0.50 you only save $0.25. And only on things that you can't move to off peak - like cook dinner etc. True about the supply charge but it's 3kW to be on grid. That same 3kW would charge the pack off grid....
by Richo
Wed, 18 Apr 2018, 13:05
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 184

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

The cost of a Tesla Powerwall is $12,500 fully installed. The Powerwall has a usable storage capacity of 13.5 kWh. It will provide 49,275 kWh over 10 years assuming it is fully charged and discharged once per day. The cost of power is approximately $0.25 per kWh over ten years So to offset the dail...
by Richo
Tue, 17 Apr 2018, 12:41
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 184

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

WA power is: $0.949058 supply charge per day $0.503471 Peak 3pm-9pm $0.263681 Shoulder 7am-3pm $0.138697 off-speak 9pm-7am I see now they have an "EV home plan" $0.184740 EV off-peak 11pm-4am $0.264740 flat 4am-11pm (Standard charge) $200.0000 Incentive per year The EV has to be registered Based on ...
by Richo
Mon, 16 Apr 2018, 12:29
Forum: Charging Infrastructure
Topic: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?
Replies: 14
Views: 184

Re: The Energy Retailers Strike Back. Will Cheap Off Peak Rates Kill Battery Storage?

To make matters worse add in the daily electricity supply fee and the lost $12,500 that was tied up in the powerwall. For me the powerwall numbers don't add up for home energy storage. Or really for any lithium battery for home storage. The energy providers have a cost to produce energy. If they mak...
by Richo
Fri, 06 Apr 2018, 12:42
Forum: Mitsubishi
Topic: Inside an iMiEV's LEV50 cell
Replies: 22
Views: 976

Re: Inside an iMiEV's LEV50 cell

Do you know of anyone who has got some real "working" general duty 18650's out of China?
I was think like 500 x 2.2Ah 5C-10C for a daily m/bike.
by Richo
Fri, 06 Apr 2018, 12:19
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 23
Views: 682

Re: Prelude conversion project - some questions

It looks quite good.
I ended up with some instant in-line under sink water heater from fleabay.
For that voltage I'd have to use 2 - add the pump, control etc doesn't work out much cheaper than that kit.
by Richo
Wed, 04 Apr 2018, 12:46
Forum: For Sale/Wanted
Topic: 20kW+ Motor wanted..
Replies: 5
Views: 303

Re: 20kW+ Motor wanted..

Good find!
by Richo
Tue, 03 Apr 2018, 12:41
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 23
Views: 682

Re: Prelude conversion project - some questions

jonescg wrote:
Thu, 29 Mar 2018, 21:14
..and when we get too stressed, we explode in a fiery rage :o .
No that's only when ppl are on extremis :lol:
by Richo
Tue, 03 Apr 2018, 12:37
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

...Out by a factor of 33! And really regardless of what's in the box this IS the problem. No one is prepared to take a leap of faith because history shows that most tech is a gradual evolution. And even when there is a revolution in tech, which happens rarely, the discovery is not shoved in a fring...
by Richo
Wed, 28 Mar 2018, 13:00
Forum: Batteries, charging, management and monitoring
Topic: Stray Capacitance
Replies: 5
Views: 193

Re: Stray Capacitance

Ahh if you are going to put a cap from the pack to chassis I'd suggest a Y1 safety cap 1000pF.
They are designed to blow open in the event of a failure.
by Richo
Tue, 27 Mar 2018, 13:01
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1149

Re: Lithium Starter Batteries

The LTO's are 2.4V 2.9Ah 60C peak.

So 10 would be 12.0V/13.5V 5.8Ah
And 12 is 14.4V/16.2V 5.8Ah.

12 would be the obvious choice.

https://www.ebay.com/itm/2-4V-2-9Ah-Tit ... 2658741688
by Richo
Tue, 27 Mar 2018, 12:50
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

I've finally cracked it! ...here's the relevant image of the inside of Kilowatt Labs' so-called "Capacitor Module". Are you sure? All you seem to show us are links to cylindrical PCB mount batteries. Not to be a skeptic on the dark side of the fence. But the video only shows unlabelled cylinders. T...
by Richo
Mon, 26 Mar 2018, 12:55
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1149

Re: Lithium Starter Batteries

But the prismatics havs sloshy fluid and the pouch/cylindrical are solid. I would expect the pouch/cylindrical to always fair better in the automotive environment. I had been thinking of getting 10/12 LTO batteries to replace my starter battery. $144. Not that much difference in price to a SLA. Even...
by Richo
Mon, 26 Mar 2018, 12:33
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

weber wrote:
Sun, 25 Mar 2018, 14:38
However simply plotting its rested-voltage versus energy (or charge) from 2.7 volts down to 0 volts, would probably be sufficient.
Oh yeah what he said :lol:

Sorry :oops:
by Richo
Mon, 26 Mar 2018, 12:32
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

One way to tell whether there are lithium-ion battery cells in there, would be to remove a cell, take it apart, and have its cathode material chemically analysed. Mmmm I thought that at first but I believe that some of the supercaps do actually have similar materials. So I'd just go with a cc disch...
by Richo
Fri, 23 Mar 2018, 12:40
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 23
Views: 682

Re: Prelude conversion project - some questions

Yeah doesn't need to precharge on the second just on/off - i'm sure you have a line to tap into that will do it.
Safety first...
by Richo
Fri, 23 Mar 2018, 12:37
Forum: Batteries, charging, management and monitoring
Topic: Lithium Starter Batteries
Replies: 12
Views: 1149

Re: Lithium Starter Batteries

I thought the prismatics were to be charged 4.1-4.2V.
So the battery never got a full charge then had to put out high amps.
Quite likely the extra heat caused the closest cell to wear faster.

Perhaps move onto Cylindricals(headway) or LTO's.
by Richo
Fri, 23 Mar 2018, 12:30
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Supercaps is the generic term.
So they are the same thing under UN3499.

If I get a battery, put a Capacitor sticker on it, shove it in a box, seal it - how would the shipping company know they aren't caps?
by Richo
Thu, 22 Mar 2018, 12:30
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 23
Views: 682

Re: Prelude conversion project - some questions

I had one of my cars for 14 years - was sad to see it go.
So 26 years is very impressive.

I'd still go with both contactors.
by Richo
Thu, 22 Mar 2018, 12:29
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Have you worked out how it’s done yet? Well I'm still going with scam :lol: I'd have a(one) string of "supercaps" and the rest batteries. But I would repackage them all so they looked the same. An active cell balance to keep things happy and your done. Would love to meet our harshest critic face to...
by Richo
Wed, 21 Mar 2018, 13:06
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 201
Views: 5808

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Halarious.

"Cap array" is right next to "battery array".

"such as an Lithium Iron Phosphate"...

And you ship these by air.
Oh dear.