Does the Yesa still use '10Ah' (they look higher!) cells only in series while the Ping packs use parallelled 5Ah cells, and would that make any difference?
There's still a bit of a question mark for me over the longevity of li cells: despite the claims by some makes of LiFePO4 of 10yrs, 5000 cycles etc. I've not heard of anyone using them in ebike-type use long enough to confirm that, so I'd rather buy with a few years guarantee for ebike use if possible.
Those do look under-rated at 10Ah though: they are very similar in discharge characteristics to the 12Ah cells sold at
www.ebikes.ca (scroll about half way down)...
. Maybe they have a bit more capacity than Pings aswell as weight? I've seen other '12Ah' cells for sale, maybe they are all the same capacity, just rated differently?!
What is the weight John? About 4.5kg?
Stuart.