I bought a used EZip for lightweight riding. It had Life PO4 Lithium Ion printed in the frame so I assumed it was. Turns out is is lead acid and dead in the water. I would like to upgrade to a 36v (I've read its ok to run that on the 24v motor based on an article by Ron/Spinning magnets). I have absolutely no idea how to do this or what parameters I should ask for other than 36v (how many amps>). I assume the lead acid batteries would be replaced inside the existing battery case, with 2 18 volts? Is there any off the shelf items for this bike? I can't find any. My tentative plan is to hire someone to build this for me. In LA a shop called laebike.com offers this but I don't know what to ask for. Or, that being said can someone suggest a builder close to Pomona, CA