Willie2 via EV wrote:
I've bought several such things through AliExpress from 24v up to 144v.
Typically sold as ebike batteries. SB50 connectors are common.
http://www.aliexpress.com/wholesale?SearchText=lithium+ebike+batteries
Lee will tell you, and I don't question him, that Ping is the quality
supplier: http://www.pingbattery.com/search.php?search_query=72v&x=0&y=0
I don't have any experience with them; but someone else posted that they
had a positive experience. Was it David Roden? Check the archives.
--
All children are born as engineers. Watch them at play. They're not
just playing; they're building and learning. They are engineering.
Then we get them in school and spend years squashing it out of them.
(Geoffrey Orsak, Southern Methodist University dean of engineering)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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