Sla's need a break in before you know their true capacity, so a shop test is not real practical, unless it includes about 10 gentle discharge cycles. Then you coud do a one time discharge to closer to 100% to see what they can do. Nobody gonna do that for ya. Best quality, B&B, EV grade, but they will cost more than some lithium out there these days. Nicads from Ebikes.ca are still a good safe bet though, and a few bucks cheaper than a headway pack and charger. If money is that tight, try the bike shop deal, nothing else will be cheaper that doesn't stink. Or the wallmart toy batteries. Those I found at least equal to those that come with a WE kit.
