Endless Sphere

You can charge a single battery with two chargers just as easily.

Quite likely there is a fuse in there which has popped.

But, but, I thought supercaps didn't explode or burn...?
http://forums.aeva.asn.au/viewtopic.php?p=69713#p69713

Arlo1 wrote: ↑

Sep 18, 2018 10:54 am

jonescg wrote: ↑

Sep 17, 2018 7:00 am

But it would also be good to save about $8000 in inverter spend.

You should be able to do one of my kits for about 1/2 of this or less.

I'm sure I can get it cheaper - but not as cheap as a home-brew.

Warmer = higher operating voltage = more power.

I see about 60 km range on my scooter in winter (10-20'C) versus a comfortable 65 km in summer (20-38'C)

Yeah it might seem like staling, but the reality is I would take just as long, if not longer if I wasn't set up for the job but started anyway. Batteries are sorted - just have to find a way to make them fit. I can go for range or power. Not sure which is better, but in all reality range will be the...

And I'm FINALLY in a position to start planning the conversion... I was about to start a thread asking about Nissan Leaf motors, but then I remembered I have an unfinished build thread here :oops: . So what's happened since the last post? Well I moved house three times, even moved to a different cit...

Looks like there is some interest in more of these high power LiPo cells. So it's time for another order! MOQ is 550 cells, but I can get a 5% discount if I order 1000. That makes the landed price $15.45 + GST Australian orders only, sorry. I am happy to build a battery and ship it to anyone in the ...

I ship internationally and have these kits in stock (IXXAT and DVT together). Let us know. I got these for people like you in the forums, so you didn't have to buy expensive ones from other places. Travis, Will these kits talk to the Zero motorcycle? Quite a few folks have orphaned Zeros here in Au...

I'll have a look. My work has asked me to source some cells for an underground mining application. They have explicitly asked for LFP chemistry for safety reasons. Why 18650 format? Well that's the hill we've decided to die on apparently so that format will have to do. I still think NMC or LCO are f...

amberwolf wrote: ↑

Aug 29, 2018 3:01 am

Here's what google shows for Samsung on the subject...not much
.

I wrote to Samsung Asia-Pacific and Samsung Korea and for this response:

"Hello
Thank you for your interest of Samsung SDI.
FYI, We don't produce LFP battery.
Best regards

이대의
<delee@samsung.com>"

Can anyone suggest a half decent LiFePO4 cell in 18650 format? I think A123 were making them at one point, but not sure where that went. Also, does Samsung even make LFP chemistry cells? I suspect there are some Chinese heat-shrinking companies out there....

Thanks in advance.

Chris

Any improvement to the suspension is going to be noticeable right away.

offpist1 wrote: ↑

Aug 24, 2018 12:36 am

Maybe you did not read the whole tread, but i have 21S of 50AH Lithium-Ion (3,9KWH nominel), not SLA.

My apologies - was hard to see the whole context on the phone.
21s - must go pretty quickly!

I have a 48 volt, 60 Ah LiFePO4 battery (3.1 kWh) and I can get a consistent 65 km out of it at full throttle everywhere. I think 90 km out of a SLA battery is optimistic.

Yeah I knew that; they own Freightliner too. But actual VW branded heavy vehicles seem to be a bit rare.
Either way, good to see they're trying. Even a little bit.

Didn't realise VW made trucks, let alone electric ones.

Thanks for the shout-out Ryan!

Definitely have a read of Ted Dillard's book - he covers a lot of this very extensively.

Best photos of the bike can be found here:
https://www.flickr.com/photos/splinter/ ... 6034741115

Links in the signature of course

To be honest I would avoid any cells with a resting voltage less than 3 volts like the plague. When LiCo cells are shipped they are sent at about 3.89 volts, which is probably about half-charged. I would never let them dip below 2.7 volts under load . At the end of the discharge, a cell might 2.7 vo...

US$4.50 (AU$6.30) per Watt for installed solar??

What are they platinum backed panels or something?

Un-subsidised solar panels in Australia are $0.59 per watt. Double it for installation - hell quadruple it.

Seems a little expensive for what it is. Not dollars-wise, as most of that cost is the battery. But value-wise it could be better. The motor hanging off the side looks a little low-rent, but it may well do the trick.

A guy named Sam decok and his clang verbally attacked me on the ES Facebook page for explaining field weakening with similar info as stated above. They wanted to know why a hub was not making anywhere near its no load speed and I said it needed more torque to reach its no load speed it could be ach...

I love a good technical discussion on ES forum! Except when it gets shouty and personal, of course. Field weakening is definitely the realm of permanent magnet motors. My personal experience with it is on the race bike - the base speed is about 3900 rpm - that is, for a given DC bus, the inverter wi...

Unless it went thermal

on the subject of cooling batteries and electric bikes at the IOM Zero TT race.. Whilst the race teams are very secretive about their set up, ...one throw away comment by the winning Mugen Honda team was that their battery pack was not actively cooled to save weight, and keep it compact, ( approx 2...