Has anyone gotten any small-quantity quotes from international battery?
Thundersky LiFePO4 cells are also available from Electric Motorsport. $100 each for the 40AH cells.
Limited quantities may also still be available from Patrick Rentsch in the SF bay area for a bit cheaper.
I haven't but I wanted to mention that in the thundersky group a followup email questioned if/when/ever will the international battery begin construction.
There was also a most interesting message from Cedric Lynch:http://tech.groups.yahoo.com/group/ThunderSky/message/1473
(He's the designer of the Lynch motor, which inspired the Etek & Perm motors) He was opining on the difficulty for individuals to gain access to advanced battery technologies. The main companies like SAFT won't sell to individuals etc and it would prevent the modern day equivalent of the Wright Brothers from tinkering in their shops and creating what their vision sees. He described how most of the battery companies are instead working with the modern day equivalent of Samuel Langley, and if you remember your history, Langley used all his power and position of holding government office to prevent any other flight research than his own design ideas, but his ideas kept crashing while these two tinkerers from Ohio showed him up.
- David Herron, The Long Tail Pipe, davidherron.com, 7gen.com, What is Reiki
With regard to battery technology and EV inventors, the Wright Brothers/Langley analogy has been on my mind for some time now.
But it goes beyond just small inventors and to every other kind of small enterprise.
My wife's family runs a small sewing machine and vacuum cleaner business, but that have been practically run out of business because few of the quality vacuum cleaner manufacturers will sell their product in quantities smaller than thousands of units.
I bought my Thundersky pack from Patrick a couple months ago, but I'm unable to find a suitable BMS unit. My entire expensive project is currently hanging by a thread due to lack of a suitable BMS. everything is hinging on a retired EE living in Oregon, who has developed a good device, but is hindered by severe back pain problems and the loss of the partner of the venture who was going to do most of the assembly and marketing. Other potential sources don't even return e-mails.
Other potential sources don't even return e-mails.
This is the problem across the board! When I bought my BB SLAs I even had trouble getting companies to return my calls and emails for quotes.
PJD, keep us posted on your progress! Once one of us gets it done right, the rest of us can all follow the model.
My entire expensive project is currently hanging by a thread due to lack of a suitable BMS. everything is hinging on a retired EE living in Oregon, who has developed a good device, but is hindered by severe back pain problems and the loss of the partner of the venture who was going to do most of the assembly and marketing.
Not to mention an unreliable internet service provider. Let's hope Bob gets at least one of these problems solved soon so we can get the final word on his and Gary's BMS...
No kidding. This is an endemic problem...
How do you buy from ThunderSky? Send them an email? thunder [at] thunder-sky.com
Regarding thundersky and li-ion batteries.
I am from Australia and have spent 6 months sourcing OEM power solutions from all over the world.
and possible alternatives to thundersky.
1. thundersky only.
1. don't reply or
2. claim to have no stock for overseas consumers.
1. Don't reply
1. Give me different answers everytime i contact them or
2. Quote me outrageously cheap prices that seem suspicious?
3. send me pictures of thundersky batteries or similar looking models.
4. Ask me to send drawings of what i am developing !!! ( Come on - really - you silly little man!)
5. Send me quotes for Li-Ion packs with pictures of Li-Polymer packs.
I Have enclosed a link below of the last source i looked at:http://www.saip.cn/products.php?parid=463
This company (Saip) has made me curious ( or suspicious to be frank) - i received from them a PDF spec that is an exact copy of the thundersky spec except for the LOGO etc.
1.Any body know of this company (Saip)?
2. is 'Ningbo thundersky green power sources' the same as 'thundersky energy group'?
3. are 'Worley energy cells' actually 'thundersky'??
Is it just me or are all of us getting screwed sideways with misinformation ?
EVenergy - Addicted to stink
...Here is a link to a supplier of a BMS unit for the the Thundersky batteries...
Hello EVenergy--- I have been using saip products for a while stay away. I have had many things shipped broken or just missing. I have had Turbines the come that look water damaged and I know for a fact they are a supplier not a manufacture of batteries. I know this is late but I hope it helps you.
Hi,we are a manufacture of LiFePO4 battery pack.Please contact me if you have any interest.We would like to make sample for your testing first.
Heter Battery Technology Co.,Ltd
E-mail:market04 [at] heter.biz
Tel: +86-632-5292 912
MSN:krystal2010 [at] hotmail.com
This looks like another Chinese manufacturer that may or may not be able to be useful for EV builders:
Having just had a very unpleasant experience with a company in China I have decided to find a new source for my packs.
So far I have had no real success. Here's some criteria that I need filled before I will waste any more $$
1. References with at least 3 US users who have purchased packs/batteries in last 12 months.
2. Can I visit your factory. Unless you are willing to check out exactly what you are buying this is only way , you have to go and see for yourself.
3. The specs/drawings/photos are all unreliable and can be of anything they want to show you.
4. QC do not expect any and you won't be surprised.
5. Testing.. do not expect that there has been any testing . Data is extrapolated from other sources.
6. Guarantees.. unless you buy from a US company who will still be around when your packs die do not attach any value to this.
7. It is a great pity that homebuilders and small biz cannot get reliable batteries.
8. I am still searching for 50 volt x 20 AH packs, ideas anyone?
building the future... one crappy Lipo at a time!!
or some reason i saw 40Ah
2007 Vectrix, modified with 42 x Thundersky 60Ah in July 2010. Done 194'000km
or some reason i saw 40Ah
What is this referring to?
Hi,thank you for your questions.Yes,we are a Chinese manufacture of lithium battery pack ,battery and super capacitors.Please check our replly below,thank you
1.Welcome to visit our company for future information,please call me when you come to China and we will pick you up.
2.For the USA customers,in fact,i only have Europe,Austrialia,Canada customers now,but my collegue has USA customers.Because I come to Heter no more than one year.If you need,i can provide part of my customer information to you to check our battery pack.
3.Yes,the spec,photo,drawing and data can be unreliable,but the test reault is true because we can make sample for your testing first.I think you can trust your own testing result,isn't it.
4.For the Guarantees.. ,i can make sure one year,if there are something wrong with our quality,we can change a new one for you and we will pay for the shipping charge.
5.For your 50V20Ah battery pack,would you please give me below information and we will check whether we can make it first,thank you
1)Application 2)Size(length*width*height) or we will provide for you 3)Maximum charge current 4)Working current and Peak working current 5)Other special requirement
Please feel free to contact me if you have any other questions.My company email address is market04 [at] heter.biz .Thank you again for your attention.
Hi,would you please give me more details about your battery pack and BMS requirement,I will check it with our engineer and hope we can help you.
or some reason i saw 40Ah
What is this referring to?
i originally suggested going to EVcomponents and getting 16 x TS 40Ah cells and a BMS, since they are a US company and do honor warranties.
but the pack is twice the size you asked for...
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