High C-rate LiFePO4 Polymer Battery

eugen

100 mW
Joined
Mar 4, 2011
Messages
48
Location
CROATIA
hello
it is anybody alredy try those battery ????


http://www.alibaba.com/product-gs/387566934/High_C_rate_LiFePO4_Polymer_Battery.html



18,5Ah 3V2 5C 0,41Kg 35USD


:shock: :shock: :shock:
 
Was that their quoted price to you?
 
capacitive BMS 50A continuous-100A burst -that's about 70usd
battery suppose to be over 2000 cycles life time

does anyone try those battery :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: -manufacturer????????
 
@ olaf


shipping cost for DHL on my 32 pcs is 258$ and shipping cost with ship transport is 124 usd

will be nice o share cost but i am in Croatia not in Germany
or you are coming on holiday this summer?? :mrgreen:
 
I received an offer today.

4* 1765140, 3.2V 8.5Ah: US$17/PC
16​ * 132113156, 3.2V 18.5Ah: US$35/PC
1* active balancing BMS for 16s with 30/60A US$60/pc
1* 900W smartcharger for 48V : US$142/pc
1* 36V rear hub motor FG-R-100: US$69/PC
Shipping cost for above: US$169

Shipping is cheaper to germany. Probably additional shipping from germany to croatia is cheaper too?
-Olaf
 
yes the chinese price you receive is the same but transport cost is double or more chiper.
Dont know how much tax you should pay on top of that price in Germany??

when you are planing to order that stuff?
 
eugen said:
yes the chinese price you receive is the same but transport cost is double or more chiper.
Dont know how much tax you should pay on top of that price in Germany??

when you are planing to order that stuff?

Usually I pay 2.4% import-fee + 19% tax.
I'm in no rush, since the BMS and charger aren't in stock at the moment. Either I cancel those items and order now or wait two weeks untill I pay the order.
I'm also thinking to order some headway 38105 cells ( 8.5Ah too) to compare against each other.

Should I wait? Maybe you could edit the title of this thread to: "european groupbuy from FreeGo" to see if someone else is interested.

-Olaf
 
Where do you see high C-Rating? :?:

http://www.freegopower.com/product_html/product1515.html

Very small company, not impressive. Be careful.
 
EVDragRacer said:
Where do you see high C-Rating? :?:

http://www.freegopower.com/product_html/product1515.html

Very small company, not impressive. Be careful.

do you have some construtive idea-something better?
please give me advice
thank you
 
eugen said:
EVDragRacer said:
Where do you see high C-Rating? :?:

http://www.freegopower.com/product_html/product1515.html

Very small company, not impressive. Be careful.

do you have some construtive idea-something better?
please give me advice
thank you

Yes, in a week I will have great news on theses cells. We will stock a large amount in Connecticut for quick delivery:
http://endless-sphere.com/forums/viewtopic.php?f=31&t=28596&start=60
 
so what is your predicted price for pack 20Ah 48V with capacitive BMS 50/100A ????
What supose to be weight of those pack?
regards
 
@ EVDragracing
I don't want to compare apples with oranges, but the cells you'll have in connecticut are of a complete different kind. Especially cycle life at 30C is a bit disappointing. Also 6Ah isn't very impressive.
I like the 18.5Ah cell from FreeGo, because it would fit in a triangle better than a ping or headway battery.

-Olaf
PS: If I would want to build a high performance pack, I would use the Kokam 40Ah high power cell, which can deliver 400A cont./ 800A peak and cost only 100$ each ( in large quantities )
In fact, for my pocket bike I've chosen the high energy twin with 53Ah. Still way more power than I'd need...
 
olaf-lampe said:
@ EVDragracing
I don't want to compare apples with oranges, but the cells you'll have in connecticut are of a complete different kind. Especially cycle life at 30C is a bit disappointing. Also 6Ah isn't very impressive.
I like the 18.5Ah cell from FreeGo, because it would fit in a triangle better than a ping or headway battery.

-Olaf
PS: If I would want to build a high performance pack, I would use the Kokam 40Ah high power cell, which can deliver 400A cont./ 800A peak and cost only 100$ each ( in large quantities )
In fact, for my pocket bike I've chosen the high energy twin with 53Ah. Still way more power than I'd need...

Then you are obviously not looking for High C-Rate Cells, your FreeGo cells are rated at low C-rates. The AH rating means nothing when you can parallel cells very easily. The Dow Kokam's are much more expensive than $100 each. And if you were the compare prices/amps Haiyin wins the race.
 
This is the price I received for Hi-Power Dow Kokam Cells:

Dear Ronald,
First of all, I am very sorry for my delayed reply as of business trip.
We can supply 12Ah cell only because 7.2Ah cell is not available anymore.
So, we submit our best pricing for 12Ah cell as below;
- U$67/Cell(Ex-Works Kokam)
Other terms and conditions are as below;
1. Shipment: Within 4 weeks after order receipt.
2. Payment: Wire transfer before shipment
3. Warranty: 24 months from shipping date.

For your information, we attach our 12Ah cell data.

Best Regards, Joy Ahn
General Manager of Overseas Sales
Kokam Co.Ltd.
Tel: +82-31-3620-143 / Fax:+82-31-3620-160
Mobile:+82-10-8765-2891
Website:www.kokam.com
 
The Dow Kokam's are much more expensive than $100 each. And if you were the compare prices/amps Haiyin wins the race.

I'm working for http://www.ececars.nl/modellen.
We have built EVs with Kokam for more than 3 years. I know what I'm talking about. Maybe you have to build up a reputation first to get good prices?!

-Olaf
 
olaf-lampe said:
The Dow Kokam's are much more expensive than $100 each. And if you were the compare prices/amps Haiyin wins the race.

I'm working for http://www.ececars.nl/modellen.
We have built EVs with Kokam for more than 3 years. I know what I'm talking about. Maybe you have to build up a reputation first to get good prices?!

-Olaf

That's great, so what is your price for the HighPower Dow Kokam cells?
And it has nothing to do with reputation, it's all about the amount you purchase. :shock:
 
ok
i can see those discusion is going nowhere so i decside to risk 800$ and i am about to order one pack 48V/18,5Ah with capacitive balancing (50/100A)
when that thins will be in my hands an when i found time and wilinges to test ill post results

thank you
 
eugen said:
hello
it is anybody alredy try those battery ????


http://www.alibaba.com/product-gs/387566934/High_C_rate_LiFePO4_Polymer_Battery.html



18,5Ah 3V2 5C 0,41Kg 35USD


:shock: :shock: :shock:

What is the tab dimensions of these cells?
 
eugen said:
13.2 113 156 milimeters

That makes no sense? The tab dimensions should be width and thickness of the POS and NEG tabs. :?:
 
Be careful where you are people. Some of you are borderline soliciting. Stay in the For Sale Section.
 
batery is ordered
now time for wait and pray
they say 2 weeks to send+ transport time,supose 1 week or so ..\will see
 
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