48V 20Ah, I see.
Whenever I'll leave the bike I'll want to take the battery with me so it won't get stolen...
22 lbs = 10 kg is a bit heavy for that I think.
I might go with a 500W and a 48V 12Ah
I use a formula when calculating batteries I just add up the amp hours on each cell regardless of the over all voltage and call them distance ah (dh not real hours BTW).. All though this is not PC it works perfectly easy when chosing.
The more cells, the faster you, the further you go in the time, the more distance hours,
The more amp hours, the longer you travel, the more distance hours.
Apples and oranges...
Its only relative to the same chemistry types.
Like compare my ah SLA's, even calculated per battery works a charm, rated at 36v (3x 18ah) SLA batteries at 18 ah = 54 distance housr compared to 48v (4X12 ah) 48 distance hours. I estimated wind resistance would play a big factor and the fact that the bigger batteries handle the discharge rate way better so the 36v with the larger size make it woth while,
I feel the bigger lifepo4 even though so much different to SLA's the amp hours x by the cell number works and the bigger batteries would handle discharge better too..
Those Lifepo battries are like gold and yes if people knew what are to begin with, will steal them fast.
BTW I know little about lifepo4s because I don't own them, Id still buy the bigger ones and lock them on the bike so no one ever can remove them at all..
