My controller has a sticker that says "EC-124110LD Lyen Edition"
That means it has 12 4110 100V MOSFETs.
I bought from Edward Lyen to whom I was referred on Endless Sphere where his username is "lyen"
http://www24.brinkster.com/lyen/beta/I just sent him a private message on Endless Sphere and told him what wheel (48V 1000W pre-Pie) and batteries (48V 10 AH, NiMH mounted 3/4 of an inch apart so that they can cool) and asked him what he had that would work for me. He gave me the choice between 12 and 18 FET models.
I think I was advised into the 4110 because of regen--I'll never be able to fry those 100V FETs. Most of his customers lay down braid to beef-up the traces on the circuit board. I hope to add in my extra 24V worth of cells (left over from combing two 36V packs into 1 48V pack) to get to 72 Volts. These airgapped NiMH cells are good for regen as they require no
BMS and are rated at 5C (50A).
I bought the USB cable and downloaded the software and will set up my three-way hardware switch to set three max amp settings conservatively at first.
I think that the stock GM controllers are a little less than 20A.
I have been told that my wheel can handle way more than that. I don't, however, think that my batteries can (in terms of range--they can spit 50A but probably last a lot longer if they don't). I can't see needing more than 30 for my purposes. I don't want to go 40 mph! I chicken out in the mid 30s on the crappy roads they have around here. (Can you say "Crumbling Infrastructure?")
I plan to put it all together tomorrow and will post how it works out and whether or not any wire swapping is required.
--Eric