charlestonleafer wrote:Does seem a little steep, an 8kwh pack from Enginer for a Plug in Prius conversion is only $5500.
That really isn't a fair comparison. It's similar to saying both a '65 VW Beetle and a 2012 Buick are cars, so why is the Buick more expensive?
First, as having researched the Enginer kit from almost the beginning, but having no firsthand knowledge, I can still safely say that the Enginer kit's components are not stellar. The inverter is questionable, (I don't know if the proposed Leaf kit has one or not), and obviously it won't have a high quality 3.3kw charger as the proposed Leaf add-on kit. The kit adds a minimum amount of electrical energy to the Prius, so it doesn't throw the parameters for the Prius out of range. It is far from being as sophisticated as a Hymotion kit or others, which also have additional electronics to allow more battery energy from the kit. I would expect the proposed Leaf add-on kit would be more than just sticking two wires from the kit to the original Leaf battery. Also, the Enginer BMS, at least from back when I was researching, was dubious. I would suspect the BMS for the proposed kit would be of much higher quality.
I would have really thought that the each additional 2kw for the higher power kits would not have added $2500, but I don't have any information about the proposed battery for the Leaf kit.
So maybe a bit more information about the proposed components and the complexity needed for the add-on kit would be helpful.
As has been seen before, range extenders for electric vehicles can be very complex. I remember the "Long Ranger" proposal for the Rav4EV. http://www.evnut.com/rav_longranger.htm