openinverter forum

As there’s been some interest in the BMW hybrid batteries for them being full voltage in small capacity increments and supposedly capable of high currents and priced reasonably there is an opportunity to group together to purchase these batteries in large quantities with possibly for about 50EUR-ish per kWh which seems too good to be true, right?

The catch of course is that we’d need to think in containers here.

So I’ll start this thread to get a sense for the interest.

As per https://twitter.com/newelectricirl/stat ... 86626?s=21

Kevin has kindly offered to facilitate contacts once we have momentum/commitments enough to be taken series by the wholesalers.

I’ll start by committing to at least 100kWh (but probably more) at that price.

So assuming that each module is about 1,5kWh the current count is as follows (rounded to the nearest multiple of 6 to achieve full voltage)

jnsaff 66
bobby_come_lately 12
celeron55 12
zippy500 18
steveknowx 24
LRBen 36
clanger9 6
Jack Bauer 6
mario 12
Bigpie 6
cloudy 24
sheselectric 18
hugow93 24
SciroccoEV 6
arber333 48
rstevens81 12
Dilbert 6
EVElvis 6
johnfin 30
Stephen Darbey 18
Richerson 30
johnspark 18
Igor 12
rikohm 36
invokeperformance 12
Tfirenza 30
36320e 12
adamover 12
jap 6
BMW2002 24
PacEmaker 24
mjw700 12
Wayne Campbell 24
Antpncott 66
bexander 6
ted.walsh 12
Jelle IV 18
Alibro 24
michaelh 12
mackoffgrid 36
pilt 24
Lithiumtherapy 24
JeanVapeur 60
Tobiazz 12
DaveH 24

Total Modules 960
Total Packs 160
Total kWh 1440
Toal EUR (50/kWh) 72000
Tons 18.0

Interesting. These are what I'm planning to use but I'm hoping to keep them in the original 330e box, though sounds like cooling might be complex based on Damien's latest video. Might be up for 20kwh if it turns out not to fit - I'll find out tomorrow. Will also depend on the timeline - aiming to get bulk of project done this summer.

Would this include the BMS modules, and would shipping cost to my location be reasonable?

If so, I'd commit to 6 or 12 modules, which I think is 9.1 or 18.3kWh. Of course depending on when this would happen, as at some point I'll source them myself.

Very interested here but not after many modules as I'm doing an HEV retrofit rather than a straight EV.

Although I have been looking at Tesla SDUs and if one would fit in the back of my E39 touring Too many started and not finished projects in the way though.

Id be very interested in some ( 24 or 30kw)

I'm Interested. I can commit to at 40kwh at that price.

I can commit to 24 modules (just under 40kWh correct?).

I'd happily go for 6 modules at that price (i.e. just shy of 10kWh)

I'd also be happy to go for another 6.

I'm in for six modules also.

I'll go for 6 also.

Will these modules come as assembled packs? As having them as seperate items can mean they can get mixed up.

two issues with that:
-Degredation, you want them to be as identical as possible
-Can bus Ids for the slaves are fixed in the pack upto 6 Ids I believe so if you have overlapping you need to reassign the IDs somehow.

Also keep in mind that monitoring parallel groups is something not to be taken lightly.

This here is to gauge interest, as there seems to be an opportunity for deep discounts.

Once there is enough interest the details can be worked out but in general I would expect the seller doing as little work as they can i.e. packs won't be dismantled before delivery.

I can commit to minimum 12 or possibly 24 if it's at (or very near to) 50EUR per kwh

Great idea. I can commit to 18 modules now and possibly more depending on lead time and cash flow. Thanks

Could you please the part number so that I can lookup the dimensions.
Cheers

Michael

mjw700 wrote: ↑Sun Jun 07, 2020 7:26 pm Could you please the part number so that I can lookup the dimensions.

There's a whole thread on them; viewtopic.php?f=20&t=709

I am happy to 3D scan and model them once I get my hands on one...

@jnsaff What are the timelines on this? Is there a certain quantity we're looking for before talking to the wholesalers?

Great work! Put me down for 24 modules, please.

Also can you confirm if you are aiming for the Gen3 (26Ah/351V) or the Gen4 (34Ah/355V) as seen here? I think they moved to Gen4 in the second half of 2018

https://www.newtis.info/tisv2/a/en/g11- ... 1VnZ8phPwk

Dimensionally the same and only a tiny weight penalty - I'd be definitely after the Gen4 given the option...

I'm definitely interested in at least 6 modules.

I would be interested in buying 24 modules as long as they are in homogenous 96S configs. Also 50€ per kW price is very very good. I want them!
Can we get the BMS cables with the cells too? Or is the complete pack with casing on the table? In that case i really think its almost too good to be true...

Ok, then where from would that battery be shipped to my address? Is it UK or Germany?

I'm interested in 6 modules

would be interested in 6 modules.

Hi
I would much appreciate the opportunity to buy 6 packs
cheers