These little 2 seater cars were build in Norway around 2001 and a lot of them went to the USA under the name ' Ford Think City'.. and they all came back in 2005 or 2006 when Ford decided that E.V's where (again) not the way to go...
https://www.youtube.com/watch?v=uJBlZzihc_M
A lot of these cars are scrapped in the past years so only a few are left (mainly in Norway).
Originally it's equiped with 19 Saft 6V Nicad cells, so nominal 114V/100Ah. Has a Siemens drivetrain, PTC heater and a lot of other common Peugeot/Citroen mechanical parts.
The batteries are inside a 87cm x 75cm centralized batterybox under/inside the floorpan.
I have removed the old Nicad cells and cleaned the batterybox from all unwanted metal to make room for a full 24kWh Nissan Leaf battery.
With 24 modules in one stack and some modified endplates each stack is 35cm x 86,5cm and two of these fit perfectly inside the box with some room left for relais etc.

Since the Siemens inverter can only handle upto 385V and the original DC/DC upto 290V I have decided to 'break' and parallel the Leaf pack into a 196V pack. So instead of 48 modules in series I will parallel each two modules to get 24 modules in series. (each module is allready 2S2P).
The original battery had a 'BMS' and a contactorbox with pre-charge and main relay and some other functionality like cabin pre-heater, delayed/timed charging etc. By keeping the voltage under 200V I can almost certainly re-use all this functionality and re-use all HV components.
Although the firmware/software of the Siemens inverter is locked with a code that Siemens has to provide I managed to crack the code and can now make modifications with Siadis, the Siemens MS-DOS software. This opens the possibility to change setings like max Amps, Volts, top speed etc.
Why upgrading to a bigger battery:
https://www.youtube.com/watch?v=JcuDCZMmCKg