I second that thought. It would sure be nice to have a an upgraded battery pack on the RAV4 EV with at least 65 kWh or even 80 kWh but it is a long shot at best. A couple other nice upgrades to go along with larger battery pack would be a newer on board 48 amp charger (or even the 72 amp charger) and a modification of the motor control software increase the power output of the motor by 20% although I suspect the drive train hardware is at its limit as is the traction. I'd call it the RAV4 EV-P....P can be for plus or performance.
There is actually a twin charger option for the vehicle BUT when you put the second charger in you have to set it as 'slave' so both can work together and this requires the setting be available in the software which I doubt is available. The twin charger option was an option on the MS a while back when these came out. Problem is you'd need the right firmware to able to use the second charger and set it as a slave. unless we find a solution to that we are kind of stuck
Oh, I just wanted to mention that another option can also be to increase the aerodynamic profile of the rav4 ev to increase the driving range. If it can be brought down to 0.1 I am sure there will be a good enough gain in range. Of course that would require some dramatic changes such as: Full Boat Tail, front and rear skirts, Lowering the rav4 ev, full wheel tire fairings, and likely working with the front of the vehicle and slope from the hood to the top of the cabin. After that you'd look into weight reduction for further increase. Not an easy job at all BUT an alternative....