OK, its your money. I have had mine apart and can share images about what's inside and how it is built. I repackaged it in a coroplast box I made. I have ideas about trying to bottom balance it. I too was weirded out by the separate BMS, but it is spot on with the balancing. You can get to all the cell voltages from an inline connector to the BMS. The 6 amp charger is fine so far. I was skeptical about the capacity as it is only half again heavier than the 10Ah pack I have, but it is at least double the power and it has degraded less so far. Seems better in the cold now than the other as well. Oh yeah, they gave free air shipping, too. It was really a great deal.
I priced many packs, including Headway and Ping, and decided to see if the low cost one had any merit. It has been a success. It has a lot more energy density as it is a pack of 96 181650 cells. The pack I have made with way 32120 cells is not holding up as well. I believe those are Headway cells. I think if you are going to be picky you should be looking at CALB and Thundersky. I have heard that Headway are actually rebranded from some other supplier, however that could be apocryphal. Very hard to tell with Chinese supplies. But, I wasn't suggesting this pack in particular, I was suggesting you use Alibaba and try the RFQ function. After buying this pack, I am not sure if Ping are really worth the rather large extra cost. On Wed, Dec 18, 2013 at 4:09 PM, EVDL Administrator <[email protected]> wrote: > On 18 Dec 2013 at 11:08, Peakfoto Digital Photo Still n Video wrote: > > > Where can I find completed headyway battery packs form china or > something? > > > > I'm looking for 36 volts 8-10 ah pack . > > It's not Headway, but I've had mostly satisfactory results from > http://www.pingbattery.com. They offer complete packs with pre-assembled > BMS and included charger. Got the reference from a couple of the e-bike > forums. > > The only problem I've had is that I bought 2 packs and one of the > (universal > input) chargers failed when I tried to use it on 240 volts. I've read that > Ping will often replace failed chargers if contacted, but since I have a > spare, I didn't bother. > > 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 > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do With your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20131218/bd24ff03/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
