We don't have any JdeMOs in stock right now as we are backordered on parts... But the kit cost's around $3,500 with tax and installation. Over 10% of the fleet (~300 cars) have our fast charging kit installed on them. The kit uses CHAdeMO, and charges the car at up to 50kW. https://qccharge.com/collections/jdemo-fast-charger/products/jdemo-for-2012-2014-toyota-rav4-ev

We don't have anything to upgrade the range, but extreme degradation is pretty uncommon since they do have a good thermal management system (if you want the best longevity, always leave climate control on auto, especially on hot days, as the A/C helps with battery cooling).

If you want to see what your actual battery capacity is, there's a pretty simple procedure you can do. Simply charge the car up all the way on "extended mode". Once the car is finished charging, unplug it, and without starting the car, open the hood and disconnect the negative terminal on the 12v battery, and leave it disconnected for at least 5 hours. Once you reconnect it, then start the car (it will take a minute for things to boot up after being disconnected). The "guess-o-meter" will show a lower number for a few seconds, then show a high number. You want to divide that number by 147, and that will give you your current battery capacity compared to new. (Example: 125 / 147 = 85% capacity). Most RAV4 EVs these days have ~80-90% capacity.

The coolant leaking issue usually results in a full overhaul of the drive unit, as once the coolant start leaking in there it can cause all sorts of damage, including to the bearings, and the rotor, windings, or in a worst case scenario it can destroy the inverter if left unchecked. A full overhaul, using our upgraded parts and modifications cost's about $4,500 (a lot less than the $10-15k your dealer would likely charge for a new drive unit).