AEVA Forums

Wow, my car has 294000 km of range. Not bad for 14kWh

We don't even get the rego discount in WA

Hopefully it's just the hose connections on the outside of the modules but it's not sounding promising.

Any theories as to why a cell would have dropped?
Just a Bad cell? Damaged somehow?

Oh dear

If that's the case I think Nissan should have said something like "by the way, your range will still be down for the first few cycles. Don't panic, it just needs to adjust to the new capacity." That being said I'm pretty sure the main bms computer is inside the pack so unless it's just the instrumen...

Well theoretically you could just do the suspect row, that brings it down to 18 hours. And you could do them in groups to narrow the field. Ie 9 and 9, then if only one set of 9 are weak then split it again etc. If they are both weak then you are probably going to have to replace the whole row anywa...

hary wrote: ↑

Sun, 24 May 2020, 18:06

What tools do I need to properly work with batteries ? I mean how to capacity test large amount of cells, and is that the only point to test ?

You can get by with a multimeter, constant load(light globe, resistor etc), a stop watch and some time. Oh, and some way to charge the cells back up.

hary wrote: ↑

Sun, 24 May 2020, 18:06

I do think these large number // pack are not a good solution.

It does mean that if only one cell is dragging it down (and it hasn't damaged it's comrades yet) then you can replace just the one bad cell.

Can you split the parallel cells up? Then you could test each cell in the suspect row individually

I can't see any initials carved in it, where's the diy professionalism?

Ooh lala

A good bet would probably be to find a scrap electric forklift. It wouldn't need to be a very big one at the power levels you are talking about. That way you can get the traction motor for propulsion and use the hydraulic motor for lift. If you keep it at 48v you may even get away with reusing the c...

Welcome

Yes but 6 months isn't all that long for a car to be parked up in the grand scheme of things. What happens if you get sick and have to go into hospital or something. Granted they're not daily drivers but I have paddock bashing cars that I haven't even seen in 3 year's and I reckon that I could go to...

If you want it to be weatherproofed then I'd personally recommend you steer away from brushed DC motors. It'll be easier to find an AC (or BLDC) motor that will withstand the elements better, however they are generally more expensive to buy and control and I'm guessing regen (a benefit of AC) won't ...

The voltax batteries are pretty cheap ($580 for 100Ah) which made my spider sense tingle. The specs are rated to 50A max (20A recommended). Ok for running light loads like LED lights for long periods but don't expect an inverter to run off it. That's no doubt a limitation of the cheap bms that they ...

dracekvo wrote: ↑

Fri, 08 May 2020, 23:36

This battery use Škoda Citigo IV.
I mean will be problem with DC charging. Cigito have 2x60Ah and maximum charge is 40kW.

Good call, the cells are only rated to 1c max charge /discharge. That's not going to cut it at 60Ah.
Well, it was an idea anyway..

Similar, but slightly smaller.

Yes, they are pouch cells. I did say they would be harder to use.
Not the seller I was talking to but these are the same cells
https://wholesaler.alibaba.com/product- ... 65456.html

Normally it's the other way, ie they can't be used in series

I came across some cells on alibaba and thought they could be a possibility. LG N2.1 3.7V 60Ah 14.5*100*300mm My rough size estimates say you should be able to lay 8 down in each of the modules but I don't know about the 4 cell banks They're only 60Ah so not a lot of range gain and being pouch cells...

To be fair, Australian drivers don't do roundabouts either. :? While somewhere in America is probably going to be the first for FSD I think it's going to be a way off before they have collected enough data for it to work anywhere in the States and there is a hell of a lot more data coming in from th...

Seems like a good deal, but if it's so cheap to fix (relatively) why doesn't the owner fix it and sell it in good nick? The car came from the ACT hail damage auctions. My cynical guess is the current owner bought it at auction hoping to flip it, transported it to Melbourne, did an assessment on it a...

Yes, I know I'm a bit of an Intervolt fanboy, but I like to support Australian companies when they make good quality gear. To be fair, credit where credit is due. The intervolt units are really good quality and tick all the boxes for most people, not to mention they have a lot of features that make...