a123 batteries

theskip1

Pedelecer
Mar 4, 2010
159
0
sm6
i dont know if anyone has got a123 batteries cheaper than this but this is the best that i have seen. i needed a complete bank of 18 for my Vpower 36v 20ah pack and i thought that it would be an arm and a leg but i found this site in america and purchaced all 18 for £27 ! and get this with-----Free delivery !!!
this is the link- Nano-Phosphate LiFePO4 Original A123 APR 18650 M1A Cell_A123 Element/Cell_A123 Batteries_Batteries_A123 batteries,motorcycle battery,golf cart batteries,car batteries,car battery
 

tillson

Esteemed Pedelecer
May 29, 2008
5,249
3,197
i dont know if anyone has got a123 batteries cheaper than this but this is the best that i have seen. i needed a complete bank of 18 for my Vpower 36v 20ah pack and i thought that it would be an arm and a leg but i found this site in america and purchaced all 18 for £27 ! and get this with-----Free delivery !!!
this is the link- Nano-Phosphate LiFePO4 Original A123 APR 18650 M1A Cell_A123 Element/Cell_A123 Batteries_Batteries_A123 batteries,motorcycle battery,golf cart batteries,car batteries,car battery
I've just had a quick look at these batteries as the price seemed too good to be true.

The cells are 3.3 volts 1100 mAh.

18 cells will give you a 3.3 volt pack with a 19.8 Ah capacity.

Or a 59.4 volt pack with an 1100 mAh capacity.

You need 10 times the amount of cells to achieve your 33 volt 20Ah pack. £270.
 

banbury frank

Banned
Jan 13, 2011
1,565
5
Hi

The cells you need are AHR32113 3.3 volts 4 AH

Or the sell on that site 20 AH Prismatic cells $50 x 20 = $1000

60 Volt 20 AH WOW

Frank
 

jerrysimon

Esteemed Pedelecer
Aug 27, 2009
3,292
112
Cambridge, UK
I use these



Get them from here

Works out at £60-70 (£5 each) for a 2*6s1p 36v, 2.3Ahr including spot welding. Used them for 17months 1600miles over 200 cycles. Initial balance when first built but not since then. I run them with no BMS.



Not enough capacity for many but for my 10.5 mile round commute in pretty flat Cambridge they are perfect. I have since made a second pack for longer journeys.

Regards

Jerry
 
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vhfman

Pedelecer
Oct 5, 2008
144
0
And I use these plus another 4 packs like Jerry's



Like Jerry, I have used OMG in HK via Ebay, for my A123-26650. I suspect , despite all the stuff on the item description about fake A123’s, these are ‘Chinese copies’ of Original American A123 systems cells. But they seem good and are well matched, voltage wise, within 5mV of each other.
theskip1, you mentioned that the site in your link, is American but I think that A123RC is based in China/Hong Kong. All their shipping is from Regular HK Air mail/ Parcel Post for free--Free Shipping.

I am not sure from your OP whether you are adding the 18 A123 cells to your Vpower 36v 20ah pack? I cant work out why you have 18 cells for a 36V battery. As tillson says LiFePO4 cells are nominally 3.3V. Most would use LiFePO4 in multiples of 12S, to get around 39V.

I paid £260 for 48 cells made into 8 x 6s packs, which is £5.41 per cell, about the cheapest I have found.

Chris
 
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banbury frank

Banned
Jan 13, 2011
1,565
5
Hi

with most LIFePO4 battery's

The code is the size off the battery so your A123-26650

is a cell 26 mm dia X 65 mm long

Or A123-18650

18mm dia X 65 mm long

the ones I recommend is 123 ARH-32113 4 AH capacity

32 mm dia X 113mm long

so 2 joined together will give you 8 AH or 3 12 AH at 33 volts so youneed 24 to make a 8AH 36 volt pack 36 To make a 12 AH pack

Frank




Frank
 

theskip1

Pedelecer
Mar 4, 2010
159
0
sm6
I've just had a quick look at these batteries as the price seemed too good to be true.

The cells are 3.3 volts 1100 mAh.

18 cells will give you a 3.3 volt pack with a 19.8 Ah capacity.

Or a 59.4 volt pack with an 1100 mAh capacity.

You need 10 times the amount of cells to achieve your 33 volt 20Ah pack. £270.
they are the same serial no as the vpower cells i made sure before i ordered them. i certainly dont want to mix and match.howerver if they are the wrong ones i havn't lost a fortune.i have a 36v 20ah pack consisting of 12 banks of 18 cells. total 240 cells
 
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theskip1

Pedelecer
Mar 4, 2010
159
0
sm6
just like to say they were the right cells,and here i am testing them. alls well that ends well
DSC03027.jpg
 
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kitchenman

Esteemed Pedelecer
Jul 9, 2010
1,309
7
Aberaeron, West Wales
just like to say they were the right cells,and here i am testing them. alls well that ends well
Great photo. Bike looks great.
 

banbury frank

Banned
Jan 13, 2011
1,565
5
Hi

I think you have spent a lot off time making the bike and electrifying it and had a lot off fun in the process

And found out a lot about bikes and motors and battery's Well done

Must be a great hobby and ended up with something you can use every day

Frank
 

theskip1

Pedelecer
Mar 4, 2010
159
0
sm6
Hi

I think you have spent a lot off time making the bike and electrifying it and had a lot off fun in the process

And found out a lot about bikes and motors and battery's Well done

Must be a great hobby and ended up with something you can use every day

Frank
this was my second build and yes its a rewarding pastime. I am thinking of building a trike next.