[EVDL] EVLN: Motiv ERV, Garbage e-Truck Takes Out Chicago's Trash ... quietly
Pretty stinking cool ... r:60mi
http://techaeris.com/2014/09/16/first-electric-garbage-truck-takes-trash-chicago/
First All-Electric Garbage Truck Takes Out The Trash In Chicago
September 16, 2014 By Alex Hernandez
[image
http://techaeris.com/wp-content/uploads/2014/09/first-all-electric-garbage-truck-takes-out-trash-in-chicago.jpg
]
Motiv Power Systems has designed the world’s first all-electric garbage
truck. The Electric Refuse Vehicle, or ERV, was made possible using Motiv’s
modular, plug-and-play electric Powertrain Control System (ePCS) technology
and in collaboration with Chicago’s existing refuse truck vendors. The city
is saving 2,688 gallons of gas by running these electric trash eaters on 60
mile routes.
“We are constantly looking to modernize and improve the City’s fleet
operations through environmentally conscious choices,” said David Reynolds,
Commissioner of the Chicago Department of Fleet and Facility Management.
“The City in a Garden is proud to be home to North America’s first
all-electric refuse and recycling truck, and we look forward to examining
how this truck can boost efficiency, reduce emissions and save tax payer
dollars in the future.”
“Besides dramatically lower fuel and maintenance cost, value of the ERV goes
beyond strict payback,” said Castelaz. “Each truck offsets over 55 barrels
of petroleum and 23 tons of carbon dioxide each year. Plus, no one wants
large, noisy truck engines idling next to their house at 6 am when they
could have clean, and quieter ERV’s keeping the morning peace instead.”
As a Chicago area resident this makes me well up with pride and it’s pretty
stinking cool (pun intended). Maybe we’ll see these trucks around more large
cities soon.
[© techaeris.com]
http://www.gizmodo.in/science/Chicagos-New-Electric-Garbage-Trucks-Give-Trash-the-Silent-Treatment/articleshow/42648707.cms
Chicago's New Electric Garbage Trucks Give Trash the Silent Treatment
Andrew Tarantola, Gawker Media Sep 16, 2014
[image / PRNewsFoto/Motiv Power Systems]
You know how I know it's garbage day? Because it's 5 am and it sounds like
the trucks from Pump are getting busy on the curb. VROM, CRUNCH, SLAM,
WAKKA WAKKA WAKKA, SLAM, CRUNCH, VROM. But some lucky Chicagoans will
soon be able to sleep all the way through the night thanks to a new fleet of
(mostly) silent dump trucks.
Built by Motiv, an electric vehicle company that first gained prominence
with its electric school bus for Kings Canyon Unified School District in
California, the new all electric garbage truck will run a 60 mile route
while collecting and compacting an estimated 9 tons of trash every day. It
is also expected to save 2,688 gallons of diesel and $11,000 in maintenance
costs annually. Compact-y parts of the truck are still sure to make a
racket, but the driving part will be mercifully whisper-quiet.
In all, Chicago aims to add at least 20 of these vehicles to its existing,
600-strong fleet over the next five years at a cost of $13.4 million. The
electric truck will make its public debut on September 23rd at a Ride and
Drive event put on by the CALSTART High-Efficiency Truck Users Forum-check
it out before the vehicle is bathed in human refuse. [AP News]
...
http://www.prnewswire.com/news-releases/first-all-electric-garbage-truck-in-north-america-developed-by-motiv-power-systems-hits-the-road-in-chicago-275253371.html
AP News
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http://cleantechnica.com/2014/09/14/weather-channel-gets-super-excited-electric-cars/
The Weather Channel Gets Super Excited About Electric Cars
http://dailytrojan.com/2014/09/14/genze-offers-scooters-geared-for-students/
GenZe offers e-scooters geared for students
http://evfleetworld.co.uk/news/2014/Sep/New-study-shows-effects-of-rapid-charging-on-batteries/0438016306
Rapid EV pack chargedischarge not damaging as previously assumed
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Re: [EVDL] Dissimilar metals on Headyways?
Why not just buy the link plates that headway sell, made for the purpose. Get the cell mounts at the same time? -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Michael Ross via EV Sent: Tuesday, 23 September 2014 11:41 a.m. To: EVDL Administrator; Electric Vehicle Discussion List Subject: Re: [EVDL] Dissimilar metals on Headyways? If there is a platting house nearby, they won't charge much for a basket of copper bits. Could be far less trouble than manual tinning. Nickel might be better choice in that case. Of a flash of nickel under the tin. I would do tin/lead dip if I was not concerned about ROHS and had a plater still working with that. It is a much better coating in so many ways. If you could find an old solder pot (for tinning leads and such) you could do that yourself for smaller parts. On Mon, Sep 22, 2014 at 3:06 PM, EVDL Administrator via EV ev@lists.evdl.org wrote: On 22 Sep 2014 at 7:55, Roland via EV wrote: You can get the plated copper bus bars in long lengths and cut them to size. You will note that the cut ends will show copper. In wet locations, coat these cut ends with silver paint or epoxy silver paint. Why not tin them with solder? I would think that that would bond and protect better. 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 michael.e.r...@gmail.com michael.e.r...@gmail.com -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140922/6886f70e /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) ___ 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)
Re: [EVDL] Lithium batteries direct from China
Mathew, Check out these Colorado companies: http://evolveelectrics.com/ http://boulderhc.com/services/ Evolve can provide the parts and Boulder Hybrids can assembly the battery pack with BMS even though its not listed as a standard service. Best, Byron On Sep 22, 2014, at 10:33 AM, Matthew Parkhouse via EV ev@lists.evdl.org wrote: I remember the Thundersky problem.. This is exactly why I am asking the EVDlist for real life experiences bringing a small order (48 volt and 120 battery pack that came from China). Sounds a bit scarey, has this happened to any of us? Two outfits have said they will ship to my favourite port. What happens then? I assume I then hire an agent of some sort to do the paper work and either hand over the batteries or help organise trucking to the center of the US (Colorado). Just in case, are there any folks on this List in the business who could put together the 48 volt pack and the 120 volt pack to my specs (dimensions), with whatever BMS is needed? I would prefer to keep this in country than involving the whole world! Many thanks Matthew Parkhouse, RN hobomatt@ -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/181be272/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)
Re: [EVDL] Lithium batteries direct from China
I did not buy my batteries from evolveelectrics but I did get my bms and charger. I give them two thumbs up. Buddy Mills Sent from a little keyboard with fat finger. Sorry for any typos. Original message From: Byron James via EV ev@lists.evdl.org Date:09/23/2014 8:07 AM (GMT-05:00) To: Electric Vehicle Discussion List ev@lists.evdl.org Cc: Subject: Re: [EVDL] Lithium batteries direct from China Mathew, Check out these Colorado companies: http://evolveelectrics.com/ http://boulderhc.com/services/ Evolve can provide the parts and Boulder Hybrids can assembly the battery pack with BMS even though its not listed as a standard service. Best, Byron On Sep 22, 2014, at 10:33 AM, Matthew Parkhouse via EV ev@lists.evdl.org wrote: I remember the Thundersky problem.. This is exactly why I am asking the EVDlist for real life experiences bringing a small order (48 volt and 120 battery pack that came from China). Sounds a bit scarey, has this happened to any of us? Two outfits have said they will ship to my favourite port. What happens then? I assume I then hire an agent of some sort to do the paper work and either hand over the batteries or help organise trucking to the center of the US (Colorado). Just in case, are there any folks on this List in the business who could put together the 48 volt pack and the 120 volt pack to my specs (dimensions), with whatever BMS is needed? I would prefer to keep this in country than involving the whole world! Many thanks Matthew Parkhouse, RN hobomatt@ -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/181be272/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) -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/28ec162e/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)
Re: [EVDL] Lithium batteries direct from China
On Sep 23, 2014, at 5:07 AM, Byron James via EV ev@lists.evdl.org wrote: Mathew, Check out these Colorado companies: http://evolveelectrics.com/ http://boulderhc.com/services/ Also K2 Energy. We’ve gotten packs from them. http://www.k2battery.com/battery-packs.html -Bill -- next part -- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 841 bytes Desc: Message signed with OpenPGP using GPGMail URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/626556e1/attachment.pgp ___ 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)
Re: [EVDL] Lithium batteries direct from China
I'll add my 2 cents. I remember the endless email threads about the fouled Thundersky purchase, years back. I think that showed how difficult it can be to import something from another country where you have little protection or recourse if something goes wrong. Particularly with China where there is a very wide range of ethics. My personal experience is buying a bike light from a China importer in the US. Even though the importer was in the US, this person was unscrupulous and would not honor his warranty. I ended up trashing a moderately expensive light after a couple months. I think with EV batteries and other components it's a lot safer since a US distributor would quickly go out of business if he didn't honor his warranties and ship quality product in a timely manner. I won't even buy tea directly from China. The package might say organic but does it have melamine in it? There are some stellar farming cooperatives in China but I have no idea if the label on the package is genuine or not. Again, it's a matter of having someone local who has a reputation on the line and is bound by domestic laws and enforcement. I'm willing to pay a bit more so that I can send a defective unit back to the supplier to get swapped out rather than have to send something all the way to China and not even, perhaps, get a replacement or a response. Who are you going to call if you wire them money and get nothing in return? As they say, caveat emptor. Peri -- Original Message -- From: Bill Woodcock via EV ev@lists.evdl.org To: Byron James byronja...@earthlink.net; Electric Vehicle Discussion List ev@lists.evdl.org Sent: 23-Sep-14 7:42:07 AM Subject: Re: [EVDL] Lithium batteries direct from China On Sep 23, 2014, at 5:07 AM, Byron James via EV ev@lists.evdl.org wrote: Mathew, Check out these Colorado companies: http://evolveelectrics.com/ http://boulderhc.com/services/ Also K2 Energy. We’ve gotten packs from them. http://www.k2battery.com/battery-packs.html -Bill -- next part -- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 841 bytes Desc: Message signed with OpenPGP using GPGMail URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/626556e1/attachment.pgp ___ 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) ___ 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)
Re: [EVDL] Dissimilar metals on Headyways?
George Tyler via EV wrote: Why not just buy the link plates that headway sell, made for the purpose. Get the cell mounts at the same time? Are these just a flat bar that bolts directly between cells. If so, that's not a good way to do it. The cells will move slightly due to road bumps and vibration, The cell cases are plastic, which will expand and contract from temperature changes. The cases will also swell over time as the cells age. With rigid inter-cell jumpers, all this movement causes leaks and bad connections to develop over time. Your inter-cell cell jumpers should therefore have a bend or kink or other method to provide a little bit of flexibility or give to avoid straining the connections. This is true for *all* types of batteries; not just lithium. -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.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)
Re: [EVDL] EVLN: £13k/$22k Peel P50 EVs available World's Smallest Cutest
Hi David and All This is basically a golf cart with a FG body. These and NEV's go for about $4-9k mostly now and many thousands are in use transporting our seniors, others, many as their main transportation in Fla, US. They said it went 40 mph which for such a narrow 3wh is pushing it stability wise Of course the EV version with it's low battery weight makes it better. I doubt it could be made for under $6k as one who does composites. On the Citi-Car the motor was rated at 3.5hp, my E Woody was powered by one to 60mph, that was at 36vdc where the C Car was 48vdc so more like 6hp cont like it was in later units rated at 48vdc. It was likely doing 11 hp going 60 mph in the e Woody. Though only for minutes before the 12vdc batteries went low.. Jerry Dycus. . On Monday, September 22, 2014 5:03 AM, EVDL Administrator via EV ev@lists.evdl.org wrote: On 22 Sep 2014 at 1:17, brucedp5 via EV wrote: three horsepower electric motor ...15-mile range ... street legal in the UK and US ... pricing starting at £12,999 ($21,575 US). Cute indeed! Now, if they knock 80-90% off that price, they might sell a few thousand. They don't state a top speed, but I'd guess maybe 30mph with a 3hp motor, since the original Citicar did 35mph at 3.5hp. With that and the range, honestly, it's not much more than a toy. You might spend $2-3k for something like that, but $22K? Seriously? 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) -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/30269c5e/attachment-0001.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)
Re: [EVDL] Lithium batteries direct from China
Marcus Reddish via EV wrote: Are these the old white Thunder sky cells that failed? Seem to remember a picture of them leaking. Is it possible folks charged those early cells like they were lead and caused (or contributed to) the failures? I have not heard of any bad batch since the white cells, which was ages ago. Willie2 via EV wrote: The situation Lee describes dates to 2000-2003? Something like that. I know nothing of the situation but I believe they were LCP cells. Starting about 2005, LFPs were the preferred cells for conversions. I know of no quality or delivery problems with ThunderSky LFPs. My earliest ones were from a group buy organized by Victor Tikhonov in 2003. They were white prismatic Lithium-Cobalt cells, in both 90ah and 100ah models. Some of the 100ah cells were OK (maybe 3 out of 4 worked, but didn't meet specs). *All* of the 90ah cells were junk. Some leaked, but the main problems were low amphour capacity and excessive internal resistance. Resistance on the 90ah cells was so high that they overheated even with a 25 amp load. Maybe some of the purchasers abused their batteries and caused their failures; but I certainly didn't. I've continued to borrow, barter, and buy various lithiums for testing. Prismatics and cylindrical, LiCo, LiMn, LiFe etc. They have *consistently* failed to meet specs. Typically, their amphour capacity and internal resistance are out of spec, with large variations between cells, and a number of bad cells mixed in with the good. The most recent ones were GBS 100ah LiFe cells, tested just last year. The only exception has been A123 3.2v 2.5ah LiFe cylindrical cells; they were consistently good. I'm forever hopeful that the manufacturers will get their act together and start delivering an honest quality product, and stand behind them with a warranty. But so far, if I'd spent good money for a full pack of any of these batteries (except A123), I would have been screwed. At the moment, I'm considering getting some Nissan Leaf cells to test. I'm guessing that Nissan is likely to have made a *significant* effort to get a good, quality product. I just have to make sure I'm not getting Nissan's QC rejects! -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.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)
Re: [EVDL] Lithium batteries direct from China
Lee, Are those A123 still on the market? I haven't kept up on the batteries/companies. Are the test results available? Can you send me a CSV or similar? -Chris Mr23 at Comcast dot net On September 23, 2014 6:09:39 PM CDT, Lee Hart via EV ev@lists.evdl.org wrote: Marcus Reddish via EV wrote: Are these the old white Thunder sky cells that failed? Seem to remember a picture of them leaking. Is it possible folks charged those early cells like they were lead and caused (or contributed to) the failures? I have not heard of any bad batch since the white cells, which was ages ago. Willie2 via EV wrote: The situation Lee describes dates to 2000-2003? Something like that. I know nothing of the situation but I believe they were LCP cells. Starting about 2005, LFPs were the preferred cells for conversions. I know of no quality or delivery problems with ThunderSky LFPs. My earliest ones were from a group buy organized by Victor Tikhonov in 2003. They were white prismatic Lithium-Cobalt cells, in both 90ah and 100ah models. Some of the 100ah cells were OK (maybe 3 out of 4 worked, but didn't meet specs). *All* of the 90ah cells were junk. Some leaked, but the main problems were low amphour capacity and excessive internal resistance. Resistance on the 90ah cells was so high that they overheated even with a 25 amp load. Maybe some of the purchasers abused their batteries and caused their failures; but I certainly didn't. I've continued to borrow, barter, and buy various lithiums for testing. Prismatics and cylindrical, LiCo, LiMn, LiFe etc. They have *consistently* failed to meet specs. Typically, their amphour capacity and internal resistance are out of spec, with large variations between cells, and a number of bad cells mixed in with the good. The most recent ones were GBS 100ah LiFe cells, tested just last year. The only exception has been A123 3.2v 2.5ah LiFe cylindrical cells; they were consistently good. I'm forever hopeful that the manufacturers will get their act together and start delivering an honest quality product, and stand behind them with a warranty. But so far, if I'd spent good money for a full pack of any of these batteries (except A123), I would have been screwed. At the moment, I'm considering getting some Nissan Leaf cells to test. I'm guessing that Nissan is likely to have made a *significant* effort to get a good, quality product. I just have to make sure I'm not getting Nissan's QC rejects! -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.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) -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140923/d65dfa0c/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)
Re: [EVDL] Power of EV (DC)
500A from Leaf cells, ouch! I don't think they will care for that. What is your series-parallel setup with the cells? How many amps when cruising at highway speed? Al - Original Message - From: John Lussmyer via EV ev@lists.evdl.org To: Electric Vehicle Discussion List ev@lists.evdl.org Sent: Monday, September 22, 2014 11:36 PM Subject: [EVDL] Power of EV (DC) So, now that my Electric F-250 is fully functional with it's Leaf batteries, I've been driving it more. One of the odd things I have to deal with is that my other vehicle is a nearly identical truck that is Diesel. So, on the freeway with the Diesel (which I've been driving for years), when accelerating into faster traffic, I have to make sure I have enough room, and stomp on it. Coming back from the Issaquah Drive Electric Week event, I got stuck behind a truck doing 50mph, and the next lane was doing 65mph. Found a gap, changed lanes, and stomped on the pedal. Then hit the brakes before I rear-ended the car in front of me 500A at 310V can provide a LOT of acceleration, even with a 6000lb vehicle. -- Bobcats and Cougars, oh my! http://john.casadelgato.com/Pets ___ 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) ___ 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)
Re: [EVDL] Lithium batteries direct from China
Have you ever tested Enerdel batteries? Lee Hart wrote: My earliest ones were from a group buy organized by Victor Tikhonov in 2003. They were white prismatic Lithium-Cobalt cells, in both 90ah and 100ah models. Some of the 100ah cells were OK (maybe 3 out of 4 worked, but didn't meet specs). *All* of the 90ah cells were junk. Some leaked, but the main problems were low amphour capacity and excessive internal resistance. Resistance on the 90ah cells was so high that they overheated even with a 25 amp load. Maybe some of the purchasers abused their batteries and caused their failures; but I certainly didn't. I've continued to borrow, barter, and buy various lithiums for testing. Prismatics and cylindrical, LiCo, LiMn, LiFe etc. They have *consistently* failed to meet specs. Typically, their amphour capacity and internal resistance are out of spec, with large variations between cells, and a number of bad cells mixed in with the good. The most recent ones were GBS 100ah LiFe cells, tested just last year. The only exception has been A123 3.2v 2.5ah LiFe cylindrical cells; they were consistently good. I'm forever hopeful that the manufacturers will get their act together and start delivering an honest quality product, and stand behind them with a warranty. But so far, if I'd spent good money for a full pack of any of these batteries (except A123), I would have been screwed. At the moment, I'm considering getting some Nissan Leaf cells to test. I'm guessing that Nissan is likely to have made a *significant* effort to get a good, quality product. I just have to make sure I'm not getting Nissan's QC rejects! -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.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) ___ 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)
