http://www.ebike.ca/batteries.shtml
so total calculated AH i need is 8.33 for a 10 mile trip. not bad. could be better. ( using 14-20 Wh/km ) aka Power Hungry (either no pedaling, or hauling a load, or going really fast)
edit- how much better is the one from batteryspace from the stock battery on the bike i linked to? would it be worth it to buy this battery instead?
http://www.batteryspace.com/index.as...OD&ProdID=3002
its about the same, except it has double (10,000 mAh total) apposed to the 5000mAh on the previous battery i linked to at batteryspace. im not sure how much more that would help.