[Ovmsdev] Looking for a twizy battery rebuild

[Michael Balzer]

Jérôme,

I've lost track of all the Twizy battery projects that have been or are 
currently done. After I sold my Twizy two years ago, quite a lot has 
happened.

Some of the new batteries were based on the edriver BMS, but as Pascal 
no longer maintains that project, most current projects are based on my 
VirtualBMS solution (https://github.com/dexterbg/Twizy-Virtual-BMS) in 
combination with some standard China BMS.

There are also quite some that simply replace the cells and keep using 
the original BMS. That has some downsides but basically works.

Capacity of custom batteries normally is around 10 kWh, that easily fits 
in the original battery box, but you can go higher with the right cells.

The most used Twizy replacement battery is probably the CATL powerblock: 
https://www.power-and-storage.de/shop/CATL-PowerBlock-14S-48-10-48V-10-kWh-p464606239

You really should check out the german Twizy forum for all the battery 
projects: https://www.twizy-forum.de/Alternativ-Akku

And you should get in contact with Martin ("Snorre") and Christian 
("TwizyChrisy") on the forum. Martin was one of the first to rework his 
battery and is up to date with all current projects. Chris owns a lot 
(like: a lot) of Twizys and is continously working on projects.

Chris has also published some videos on his CATL rework: 
https://www.youtube.com/@TwizyChrisy/search?query=akku

Probably these guys can also help you with buying the components needed.

Regards,
Michael


Am 23.06.23 um 12:36 schrieb Jérôme Nicolle:
> Hi !
>
> I hope it's OK to post this here. Sorry for the inconvenience if it is 
> not.
>
> I'm looking for updated informations regarding modified batteries for 
> the Twizy. Mine is down to about 4.5kWh (fully owned) after 8 years in 
> service.
>
> What capacity could we reasonably reach with newer cells ?
>
> With plumetting prices for the cells, would there be anyone 
> (preferably close to France) from whom I could buy all the required 
> modules (including Twizy Virtual BMS), ready to fit in the battery 
> case, or with a new case ?
>
> Thanks !
>

-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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