Endless Sphere

Not yet but I would figure just over 40 kg. These latest cells are only 113 g each.

Wow, you do nice work Chris. What are the specs on that pack again? Thanks! I get better with each new one. Apologies to my first customers... It's 160s2p using 5 Ah pouches, rated for 35 C continuous. So about 6 kWh all up, 10 Ah, 600 V DC nominal. Has a main contactor, charge port, fuses, prechar...

Finished product - it took about twice as long as I quoted, but worth the effort.

The number one reason high voltage battery packs can suck - too much BMS. BMS wiring on.jpg BMS wiring on leads.jpg The BMS of this pack is almost the same cost as the cells. 160s2p means lots of BMS. Hope to finish this and ship it easy by Tuesday. In other news, I'm now unemployed again, so I will...

So you agree the planets surface is warming then? Good. Because that's consistent with the BOMs records. That's my point. No, it is not consistent with theBOM records.... they are heavily manipulated. As i said,.. .... The point is the rate of warming and the cause/explanation for it. I post BOM da...

So you agree the planets surface is warming then?
Good. Because that's consistent with the BOMs records.

...
That's my point.

I keep promising not to spend any more time on this thread... but anwyay. If the thermometer hadn't been invented, let alone left to the whims of humans and record keeping, what clues would you draw on to see that the temperature has gone up or not? Perhaps some really obvious physical change, like ...

You must be rubbing yourself raw at the prospect of Craig Kelly (renowned furniture salesman, federal MP for Hume and now forensic interrogator of BOM records) and his merry band investigating the BOM for fudging data. Personally I look forward to this gargantuan waste of resources and time. As it w...

Anyway, Perth just recorded it's second warmest July on record. The warmest being waaaay back in... 2019 National trend is suggesting something but I can't put my finger on it...

Yea,..sure. :roll: So explain why every country that has implimented significant amounts of Wind, solar, and storage , have seen their REAL POWER PRICE ..INCREASE ? Because about 10 years ago, it was kind of expensive. But now that the market for RE is established, it's actually gotten very cheap. ...

AEMO sees renewables as both inevitable and the right thing to do. Even a do-nothing strategy will still see at least 50% of all generation come from wind, solar and storage. Do a little bit more and you can easily get to 75% or more. https://aemo.com.au/-/media/files/major-publications/isp/2020/fin...

Definitely recommend a layer of FR4 between each cell. Otherwise - I love it! Totally rat rod.

I don't think most of the ancillary equipment will run on a voltage that low. And if it did, the car would be a bit slow.

Well the 60 Ah cells which were supposed to go into the iMiEV never got used for that purpose as the owner of the car had to sell the car. So I was tasked with selling the cells on Gumtree (like Craigslist). Sold all 90 of them to a guy who was going to use them for storage, but I had this reply: "G...

Can you share photos? And what was wrong with the old charger?

https://chargedevs.com/newswire/documentary-offers-some-new-footage-from-teslas-gigafactory-but-you-might-want-to-mute-the-sound/ The words don't match the pictures (hence the advice to turn the sound down) but what caught my eye was the battery being assembled at 3:49 Tesla battery screenshot.JPG A...

It can get windy, yeah. Through summer we have bitching hot easterlies and if we're lucky we cop the Freo doctor - a relieving sea breeze which never makes it as far inland as Kalamunda... I should say, I used a combined e-bike mass of 120 kg, which is probably on the heavy side, but sensible. It's ...

Thanks AW, I guess I was putting it out there hoping to hear from some long time Perth e-riders. The route in question is this: Hills bike route.JPG And the red circle denotes one of several new sealed bike paths I'd like to see from the hillside suburbs to the centre of town. The elevation drop is ...

Frank wrote: ↑

Jul 19 2020 7:39am

Did you have to drill/punch the tabs?

Yes I have a jig which hole-punches both tabs at the same time.
https://www.youtube.com/watch?v=wE6gh2Rb9e8

This pack is coming together from the first cell order. It will be a 160s2p pack with a ZEVA BMS. The fact that the BMS has a bigger footprint than the battery itself is one reason to avoid high voltage battery packs...

Just curious as to how much battery you'd need for an e-bike capable of Perth Hills to Curtin uni and back (or charge at work). I'm keen to push for a sealed path which cuts through Mundy park and reduced the trip by at least 5 km. Gravity alone will demand 100 Wh worth of battery, so I'm guessing 1...

Bump. Another request for cells has come through, unfortunately well after I'd already ordered some. I can get them air freighted, but the cost significantly more - like AUD$20 per cell kind of expensive. Ordinarily they're around $16 or $17 each. So if anyone in Australia wants cells, let me know.

I often wonder whats going to happen to the old vehicles decades from now. I'm not one to spend much on vehicles, I'd much prefer an old vehicle with little to no computers then the new age jazz that require dealer tools. Thats the way things seem to be going, John Deere, Apple and the Right to Rep...

Very tidy job! Well done.
What sort of range can you expect? I'm guessing around 150 km?

There's a thread on Thermal Management of LiPo which covers some of this. Paraffin is probably the easiest to use - look for a melting point of 40'C or something, depending on your climate I guess.