Chinese cells bite. In the two way batteries they last about 1/3 as long, durability wise and never perform to rated capacity. Japanese cells in the other hand, top notch.
On Wed, Oct 7, 2015, 7:33 PM Peter Kranz <pkr...@unwiredltd.com> wrote: > I wonder why that China module is 50Ah.. while the C&D provides such a > higher energy density. 170Ah.. > > > > > *Peter Kranz*www.UnwiredLtd.com <http://www.unwiredltd.com/> > Desk: 510-868-1614 x100 > Mobile: 510-207-0000 > pkr...@unwiredltd.com > > > > *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Eric Kuhnke > *Sent:* Wednesday, October 07, 2015 5:27 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Interesting battery backup development.. > > > > random thing from china: > > > http://jycbattery.en.alibaba.com/product/60242486785-801546525/New_4U_48V_50Ah_Telecom_Backup_LiFePO4_Lithium_ion_polymer_Battery.html > > > search alibaba for 48V lithium ion and you will find more. > > > I am highly skeptical of the quality of the cells they're using, > considering the cost difference between "cheap" 18650 cells and Panasonic > or Sony. > > > > On 10/7/15 5:16 PM, Bill Prince wrote: > > C&D Technologies: https://www.cdtechno.com/product/lithium/lithium.html > > bp > > <part15sbs{at}gmail{dot}com> > > > > On 10/7/2015 5:15 PM, Eric Kuhnke wrote: > > I bet it's intended for electric buses and similar. Those are labeled CAN, > guessing CANbus > > http://www.kvaser.com/about-can/the-can-protocol/ > > https://en.wikipedia.org/wiki/CAN_bus > > > tl;dr: it's a messy clusterfuck networking standard that's worse than > RS485 and doesn't speak IP > > > On 10/7/15 5:11 PM, Bill Prince wrote: > > ~~ 7,000 watt-hours. Not bad. Is it just a battery? What's available on > the two ethernet ports and USB port? > > > bp > > <part15sbs{at}gmail{dot}com> > > > > On 10/7/2015 4:59 PM, Peter Kranz wrote: > > Check this out.. 48V 160Ah Lithium battery module.. I�m thinking this > could be a very interesting alternative to our current telcom battery based > backup solution. I think I can double my run-time in a smaller form factor. > Looking into costs. > > � > > [image: cid:image001.jpg@01D10126.2FE86740] > > � > > > *Peter Kranz*www.UnwiredLtd.com > Desk: 510-868-1614 x100 > Mobile: 510-207-0000 > pkr...@unwiredltd.com > > � > >
