Best way to get a 72v 150ah 300a battery

[iidisappointment]

As the title says I’m looking for the best way to get that 72v battery. I’m working on a monster of a bike and have plenty of room to work with, but I don’t want to spend $3000. I’ve been looking into building my own lifepo4 battery with the 3.2v 150ah cells , but they all seem to be 1C. The motor I’m working with is 20kw peak, so that’s not enough to get me by. Is there any suggestions you all have? Would it be cheaper to buy 3 prebuilt 72v 50ah 100a batteries?
Thank you in advance!

 

[scianiac]

Maybe 40x of these? 148ah at about 26Kw continuous, $1200 plus bus bar and BMS. Still will be large and heavy but that will be anything with LiFe cells.

 

[iidisappointment]

Maybe 40x of these? 148ah at about 26Kw continuous, $1200 plus bus bar and BMS. Still will be large and heavy but that will be anything with LiFe cells.

Yeah I’m doing a dirtbike conversion, and cutting out the top end. That will take out a lot of weight plus all the other smaller things like the gas tank will add up. It will most likely equal out in the end I hope!

 

[harrisonpatm]

Those LEV60F cells are good for power, and a good price. But you'll need 24s to get in the 72v range. Meaning, 48ea for your goal of 150-ish-ah. At 2.2kg each, thats 105.6kg, or 232 pounds. I think that's going to be too heavy, especially for a dirt bike...

Would you consider just 72ah pack? Those cells are still rated for 180A continuous. I know that's not 20kw, but you're probably going to need to take a hit on some of your goals, unless you want to switch to Li-Ion rather than LFP.