Battery Packs - Where to buy them

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Re: Battery Packs - Where to buy them

Postby BungaEBiker » Mon Jan 19, 2009 2:42 am

Ok, here goes
I am planning an e-bike build, it's been in the works for some time and I am now finalizing and starting to purchase all my needed goodies. I have several questions regardng batteries.
1, I am a larger person and was wondering if a 36v or a 48v system would be better?
2 The dewalt 36v battery pack, does anyone know the ah rating on them?
3 Is it better to buy a back or make my own?



Cheers
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Re: Battery Packs - Where to buy them

Postby MitchJi » Mon Jan 19, 2009 3:09 am

Hi,

BungaEBiker wrote:Ok, here goes
I am planning an e-bike build, it's been in the works for some time and I am now finalizing and starting to purchase all my needed goodies. I have several questions regardng batteries.
1, I am a larger person and was wondering if a 36v or a 48v system would be better?
2 The dewalt 36v battery pack, does anyone know the ah rating on them?
3 Is it better to buy a back or make my own?

Cheers
Bunga :oops:


1. http://www.ebikes.ca/simulator/
http://endless-sphere.com/forums/viewtopic.php?f=16&t=1499

2 (and 3): http://endless-sphere.com/forums/viewtopic.php?f=14&t=2498
3. http://endless-sphere.com/forums/viewtopic.php?f=14&t=5416
http://endless-sphere.com/forums/viewtopic.php?t=4455
Best Wishes!

Mitch


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Re: Battery Packs - Where to buy them

Postby paultrafalgar » Mon Jan 19, 2009 4:16 am

A request: Please don't call batteries LiPO4 or Lithium Phosphate and especially not Lithium ion phosphate when you mean LiFePO4 or Lithium Iron Phosphate. It's very confusing :wink:
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Re: Battery Packs - Where to buy them

Postby BungaEBiker » Mon Jan 19, 2009 11:18 am

Thanks Mitch

Has anyone ever baught batteries from this site? http://www.batteryspace.com/
They seem to have alot of batteries and have a section for e-bikes. Some of the batteries look realy spiffy and others are run of the mill. If they are a good resource then WOOHOOO
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Re: Battery Packs - Where to buy them

Postby pwbset » Mon Jan 19, 2009 1:03 pm

How far are you needing to go? Hills? Etc. Details are good.

If money isn't an issue go with DeWalt A123 for sure. High power LiPo from BatterySpace I'm sure would work to ( http://www.batteryspace.com/index.asp?P ... egory=1260 ). They are kind of generic, but I haven't really heard anything bad so far. Some members like Methods have been having fun with RC LiPo packs ( http://www.hobbycity.com ). Some people will warn of the hazards of LiPo and 'splosions/fires, which can be true if mis-managed. If you worry about that then LiMn or LiFePO4 are the better chemistries out there. You'll hear about Ping packs, but if you're a "bigger" guy that won't cut it power-wise probably. Are you a tinkerer? If you want to build your own pack you can get toolpacks and rip them apart for the cells. Milwaukee, DeWalt, Bosch, Makita, Rigid all have good cells... "emoli" "konion" etc.

The search box in the upper right there is your friend. There is so much information on this forum that any question you have has likely already been answered 5-10 times by the "experts". Have fun! Post pictures of your build! :D
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Re: Battery Packs - Where to buy them

Postby Allan » Thu Apr 30, 2009 9:58 pm

Hi Guys ,

Maybe you can also look at this .
[*] Dear Sirs or Madam who may concerned,

How are you doing?
I would like to introduce our company as a professional manufacturer and exporter of LiFePo4 battery with more than 8-year industrial experience.
I am Mike.zzf, a sale specialist from EVPST COM.
Our company is specializing in LiFePo4 battery research, development and manufacture, covering an area of 20,000 square meters, EVPST is one of the best Lithium-ion battery manufacture companies with the large capital investment and most-advance technology in China.
EVPST attaches great importance to scientific innovation, has succeeded in possessing 12 invention & utility patents and applying for another 10 more scientific patents.
The products cover four series including LiFePo4 battery, Polymer LiFePo4 battery, Prismatic LiFePo4, Cylindrical LiFePo4 battery (all of them with high quality imported materials )

The more than 50 types of lithium ion battery covering 3 series of Prismatic, Polymer, and High Capacity LiFePo4 battery which have been successfully put into market. Voltage of the power battery is 3.2Vand the capacity is range from 7Ah to 120Ah(LiFePo4 7Ah ,8Ah,10Ah,12Ah,15Ah,20Ah,40Ah,55Ah,60Ah,80Ah,120Ah with 1500cycles 80%DOD ). They have been now widely used in the fields of IT,EV ,E-BIKE,POWER TOOLS etc. It becomes the top company in its field for the battery's high power, nice safety guarantee, reasonable price and quality after sale service.

We can supply you with whole solution including LiFePO4 battery packs and BMS with cell-balancing.
We also have 3.2v10Ah prismatic cell, which with 10C continuous discharging current and 30C pulse discharging current.

I do belief that the performance and profit of your products will be improved greatly with our LiFePo4 battery.

For more details of the products you can visit our website:
www.evpst.com
Or Tel: 020-85442897 Fax: 020-37300368
Skype: Mike.zzf
msn:mike.zzf@hotmail.com
e-mail:michael.zzf@gmail.com or mike@evpst.com
Looking forward to hearing from you at your earliest convenience
Best regards
Yours Sincerely
Mike.zzf
Sales Engineer
EVPST.COM [*]
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Re: Battery Packs - Where to buy them

Postby methods » Fri Jun 05, 2009 10:33 am

Just hit Hobby City - $60 for 5Ah 22.2V

$240 for 44.4V 10Ah

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=9176

WOW

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Re: Battery Packs - Where to buy them

Postby pwbset » Fri Jun 05, 2009 11:03 am

methods wrote:$240 for 44.4V 10Ah


And like only 7lbs... sheesh...

But... then tack on balancers/chargers etc. etc. and I'd almost just load up on like 6 $45 Bosch fatpacks for $270 @ 37v13.2ah 490wh at that point 'cause they are a "safe" chemistry (we won't go there :wink:), don't need balancing, can also deliver 15C sustained if you really need that much power and you can use any old cheapo 37v lipo charger that you probably already have laying around. The fatpacks would weigh well over twice the lipo though... 7lbs... that's yummy... :mrgreen:

Nice to see we have so many options these days!
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Re: Battery Packs - Where to buy them

Postby methods » Fri Jun 05, 2009 1:15 pm

Must be tough for you guys :mrgreen: I have no less than 10 lipo chargers in every flavor from 1S-6S, 12S, 24S.. My 12S and 24S chargers go at 1KW so it only takes me 45 minutes to charge up any of my big packs.

I have been modifying 12S balancers and I have tried a couple of the 24S BMS's. Still looking for a better balancing solution

Been running with the BM6 cell level monitors and that has been great!

Anyone who is already invested in Lipo cant miss... My lipo packs are 24S 10Ah (8 - 5Ah 6S packs) so fore me, this is a slam dunk.

And yes... we wont get into the chemistry arguments :roll:

-methods
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Re: Battery Packs - Where to buy them

Postby MrKang » Mon Jun 07, 2010 1:49 am

Hi eva

Looks good and promosing ! When do you think the warehouses are filled in Hamburg ?
MrKang E-Scooter : 24V 750W Bosch Motor modified with YK-43 48V 1kW on 12S6P Lipo - top speed 44kmph
Xinling XTD800A : LYEN 4110 72V (modified for safe 100.8V with extra cooling) - 24S4P/100.8V 25Ah Turnigy + CA with Datalogger + SOUNDSYSTEM + USB power outlet + 78km top speed(120%)
MrKang Retro II : in progress.. ** 12FET MKII LYEN + 28S 20AH LifePO4 cells **
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Re: Battery Packs - Where to buy them

Postby RTLSHIP » Mon Feb 07, 2011 7:13 am

Last year I bought four 12v 11ah Powertron SLA's from Sunn Battery, an ebay type store. They have turned out fine. The one odd thing is that each battery weighs about 6.5 lbs, which is a bit low for SLAs. I've seen other 9 &10 ah SLAs that weigh more. this is a plus.
Anybody know about the quality of Powertron?
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Re: Battery Packs - Where to buy them

Postby magudaman » Sat Feb 12, 2011 8:05 pm

www.Ecitypower.com comes off initially as shady but I really have got some amazing products for good price. I buy my headways from there everytime for $14.75 per cell. You of course must add about 200 dollars in shipping costs but it still cost less than USA retailers. They also have BMS units upward of 100 amps for up to 24 cells for around $100 if not less, depending on cells. And of course the 10a 48v chargers for $90.

I can vouch for the quality of the stuff received too. Everything listed above I own and has been in use for over a year with no problems. I did get one bad BMS unit and after some back and forth of check voltages at specified points the got me a new one free of charge. Write one of their sales staff directly ,get a quote, pay via pay pal and have it by the end of the week!
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Re: Battery Packs - Where to buy them

Postby auraslip » Wed Feb 16, 2011 4:45 pm

Has anyone used bmsbattery.com? I've heard it's the same as ecitypower.

A 48v10ah headway pack with 240w charger is $400 SHIPPED.

That is $80 less than the equivalent ping pack. And testers here have found them to be 3c cells compared to pings 1c.
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Re: Battery Packs - Where to buy them

Postby miuan » Tue Mar 15, 2011 11:42 am

They do deliver your goods in a cheap way, but are slightly unreliable in the process.
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Re: Battery Packs - Where to buy them

Postby DimGr » Fri May 20, 2011 3:42 am

does anybody know if LifeBatt (http://www.lifebatt.com/) is still in operation?
I sent them an email several days ago and I'm waiting for their reply... :roll:
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Re: Battery Packs - Where to buy them

Postby drifta303 » Sun May 22, 2011 10:22 pm

I've heard that ping batteries and cell_man are the main ones to buy batteries from... right?
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Re: Battery Packs - Where to buy them

Postby hollisterco » Mon Jul 18, 2011 3:08 am

BMSBATTTERY?

what do u guys think about this i just saw it posted on the fb group they got some really good prices on some of the batteries but are they reliable or good sellers? i did a search and saw many people mention buying parts from them, im not sure if they just recently started selling batteries vs their chargers but id like to know more on the batteries, anyone had experience with them?
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Re: Battery Packs - Where to buy them

Postby amberwolf » Mon Jul 18, 2011 11:46 pm

House Fire Updates Thread

Got a question that isn't personal or private? Post it in the forums, don't PM it. ;)

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Re: Battery Packs - Where to buy them

Postby PowerStranger » Mon Aug 29, 2011 7:01 pm

Hello battery guru,

Is Kokam selling cells to anyone or only people with big projects?

I emailed them a few times but had no luck.
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Re: Battery Packs - Where to buy them

Postby thedarlington » Tue Aug 30, 2011 3:20 pm

anyone know if hobby king finally fixed their issues on their lifepo4 line from blowing up?
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Re: Battery Packs - Where to buy them

Postby thedarlington » Wed Aug 31, 2011 9:23 pm

alright well i just put in my order for headways to linda, she works there in that company, very recommended by members here but they do need a more trusty way of payment, had to pay to their paypal account of 357438051@qq.com it is weird to pay and do everything over skype instead of a site, but in the end its all the same, i hope to report back on how everything goes in 2 weeks
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Re: Battery Packs - Where to buy them

Postby hinv » Sun Sep 18, 2011 10:51 pm

http://www.hobbyking.com/hobbycity/stor ... oduct=9176

Anybody got experience with these? I noticed somebody posted earlier, and now they are even cheaper....and when I went to browse to another page I was offered them for $41.?? each!
Are these safe? As a newby, I would like to see a chemistry argument(please point to earlier one).

qty=4 T5000.6S.20 - Turnigy 5000mAh 6S 20C Lipo Pack $167.28 3652grams

...and what would I use to balance/charge them?
Last edited by hinv on Mon Sep 19, 2011 11:21 am, edited 1 time in total.
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Re: Battery Packs - Where to buy them

Postby hinv » Mon Sep 19, 2011 11:09 am

How about this? http://www.hobbyking.com/hobbycity/stor ... duct=18631
Turnigy 5000mAh 4S1P 14.8v 20C hardcase pack (USA Warehouse) they are backordered, but at $23.65ea, and a special offer, these seem to be a good deal at $.319 per watt hour.

Anybody know the number of life cycles to expect of these?
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Re: Battery Packs - Where to buy them

Postby DeusVult » Fri Oct 07, 2011 7:29 am

http://www.joyfay.com/us/48v-20ah-lifep ... -2575.html

Anyone ever buy from JoyFay? I don't know any credibility on this site. They say they are from the U.S. but the shipping is awfully high to be local. They are cheaper than PING batteries though and include the BMS and 6A charger.
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Re: Battery Packs - Where to buy them

Postby RTLSHIP » Sat Oct 08, 2011 1:43 pm

Most vendors give you a bms and a charger along with the pack, though usually a 3 amp charger. I would go with the ping as it has a good quality reputation and customer service. Never heard of that Joy company. Asked them exactly what kind of cells are in the pack.
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