OK, so i picked up a small box of dell laptop batteries and they are all sony SF US18650GR G7 https://secondlifestorage.com/t-Sony-US ... ifications
Using liito-kala 500 charger i've tested every cell and have put any low voltage/dead cells or ones that got to hot to the side and won't be used.
I also just received in the mail a diy spot welder from https://malectrics.eu/
and it's working GREAT so far! the test spot welds that i've done have been very good (considering i don't know what i'm doing lol)
i'd like to build a 48v pack. most of the cells rate from 2000 to 2300 mah. My question is what is the discharge amp rate per cell? Am i missing something in the above link?
i'm going to pair this battery with a magic pie v5 . and i've read everything i could i think i'm just missing something on the math side of pack amp discharge rate and magic pie controller math to make a better paired battery.
also what gauge wire for charger, and what gauge wire for power to motor?
what type of wire do you use?
and what connectors are you using? xt60 for charger and xt90's for power to motor?
i bought 2 cheap 48V 35A 13S BMS off ebay (where do you guys trust 48v bms boards from? )
also i'm going to have about 40 cells in the 1000-1500 range(they weren't high capacity to begin with). is it wrong that i think i'd like to make a 13s2p battery for practice? and also hook up a bms as well for practice on spotwelding and bms ?
thanks for any help suggestions on my first battery build would be great