@saand
thank you so much for all that great info, now i dont know if this is a conversion error but i doubt 3 panels will run me 1500.. perhaps 150$cad plust 150 for shipping (lol) plus other things like umm a voltage regulator.. that thing that will stop the charging process when the battery is full.. but your right.. i never thought of it that way.... as for buying a lithium, i really dont know... the shape of my 48v lead acid battery is so specific i have no idea if any other type of battery will fit but hey heres a photo...
is that a unique battery shape or are all electric bike batteries the same ?
also id like to add that it slides into this sort of bracket that keeps it in place..
@Bicycle Bob
thank you bob but.. 4 .. i have no idea if where i can fit the 4th one..