On 10 May 2016 at 11:02, Willie2 via EV wrote: > 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 know about Lee Hart, but I have 3 Ping batteries (so far), and all have been 100% reliable. I am using them as they're intended, for low power applications. They use pouch cells. These are not high power batteries. They're designed for e-bikes, not car-size EVs. Li Ping himself, who unlike many Chinese suppliers is in this business for the long run, used to not recommend sustained loads over 1C. The cells have evolved over time, and he is also now a little more optimistic: "Based on longer than 7 years experiences and feedbacks from our customers (from V2.0 to V2.5), we can confidently say our battery cells are capable of 2C continuous current draw without significant capacity reduction for many years. The cells can be also drained at higher C rates if more years of battery life is not expected." So I would recommend a Ping battery for a 50-100lb e-bike or scooter, but not for something weighing half a ton or more. There are lots of other Chinese suppliers, some MUCH cheaper. I did a lot of research on the e-bike forums before I bought my batteries. Some of the posts are no doubt out of date, because Chinese suppliers come and go fairly rapidly. The sense I got though was that if you buy a nameless wonder battery and it fails early, you often can't count on the supplier to be around - or to care if he is. Also, take all specs with a grain of (lithium) salt. Ping got mostly positive reviews, so that's what I chose despite the price. But as I say, I don't recommend them for high power use. Caveat emptor and good luck! David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
