OSN A123 20ah packs

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Re: PROMOTING OSN A123 20ah packs

Post by sendler2112 » Sep 24, 2014 4:58 am

The GBS 20 Ah cells have come way down to $33 also. Bigger and heavier than the A123 pouch cells but already terminated in a rugged case. And the balancing modules are now only $7 each. And shipped from stock in the USA.
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http://elitepowersolutions.com/products ... cts_id=146
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 24, 2014 9:53 am

Alright, placed my order late last night. I'd been trying to connect via email but was getting no response, so figured a call might work ... opposite side of the world and 12 hours difference. So managed with a bit of persistence to connect with Jenny. While there is info at the OSNPower.com website, the more complete listing is at osn.en.alibaba.com.

The price I'm paying is $36 per cell. It gets better. OSNPower has a new design kit for assembling the cells into a battery pack. Sorry Agniusm, I think they ripped off your design!
OSNKit.png
So my order is for the cells and kit for two 12S 36v battery packs. And shipping costs were less than I expected. They're using FedEx and say two weeks time after payment, by bank transfer.
OSNProforma.png
OSNProforma.png (37.7 KiB) Viewed 2957 times
That's enough cell and kit for two 36v 12S packs and six spares in reserve. For those interested, you may want to let me be the guineapig, as I'll be inspecting & testing the cells on arrival and posting the results here. To get your order started & verify pricing, email jenny@osnpower.cn and then Skype flybatt.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 24, 2014 6:37 pm

arkmundi wrote: That's enough cell and kit for two 36v 12S packs and six spares in reserve.
Sounds expensive for kits when OSN site has assembled 72V battery/ 100/200A bms and 6A charger for $655+ $290 ship.
http://m.aliexpress.com/w/wholesale-a12 ... bilesearch
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 24, 2014 6:51 pm

megacycle wrote:Sounds expensive for kits when OSN site has assembled 72V battery/ 100/200A bms and 6A charger for $655+ $290 ship.
http://m.aliexpress.com/w/wholesale-a12 ... bilesearch
Haahaaaahahaa......
AliRealA123.png
AliRealA123.png (78.48 KiB) Viewed 2942 times
Note that:
  • its not OSNPower, but others on Aliexpress
  • "Real A123" does not mean genuine A123 nanophosphate AMP20 cells
  • The pack is wrapped, so no telling what's inside
  • There are no data specifications provided, no info, which says it all
megacycle, I would have expected more from you regarding such. If you want to be duped, go for it. Me, I'm going to continue doing my research, asking the tough questions, vetting the vendor etc.
Last edited by arkmundi on Sep 24, 2014 7:05 pm, edited 1 time in total.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 24, 2014 7:01 pm

arkmundi wrote: megacycle, I would have expected more from you regarding such. If you want to be duped, go for it. Me, I'm going to continue doing my research, asking the tough questions, vetting the vendor etc.
I know mate, but i followed the OSN link, must of got side tracked :oops: and that's where I ended up.
A full kit with a bms would be good though
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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Sep 25, 2014 12:04 pm

Where are these cells coming from ? Old USA ? Korean ? I' m happy with my Victpower cells of 2 yrs. ago yes. Would I buy A123 cells from victpower No. Meaning where are these coming from ? How old ? I'm worry about losing money.

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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 25, 2014 1:14 pm

999zip999 wrote:Where are these cells coming from ? Old USA ? Korean ? I' m happy with my Victpower cells of 2 yrs. ago yes. Would I buy A123 cells from victpower No. Meaning where are these coming from ? How old ? I'm worry about losing money.
OSNPower is located in Shenzhen, China. I believe it to be the same story as other "grey market" cells. Meaning they are coming from battery packs that were defective in some way and sent to China for recycling. Packs meant for use in electric vehicles. OSNPower, however, I believe is a great deal more respectable than Victpower. They pull the cells from the packs with care, test them, make sure they're good and offer for sale from their various websites.
OSNPower wrote:Maybe you are hesitate for the place of origin and quality of this battery pack module, as the manufacturer A123 systems was bankrupted for a long time. But we would like to promise you that:
1) The modules are original from USA, they are the NEW battery pack without defective cells in it.
2) As batteries are sensitive products, especially A123 is the brand products, the Chinese Custom taking very strict inspection of this batch of modules, especially for the news of A123 bankruptcy, the company took tough brand control on their products. After a long time held at the Chinese custom, the modules were finally released and we bought all of them from our special channel.
Take what you want from that. I'm going to take them on their word until proved otherwise. I'll let you know how they test out once I have them in hand.
OSNPower at http://osn.en.alibaba.com wrote: 1. Do you test the batteries before send out?
Yes, we test each cell's voltage,capacity,and resistance before we send out,pleas don't worry about it.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 25, 2014 7:20 pm

arkmundi wrote:
999zip999 wrote:Where are these cells coming from ? Old USA ? Korean ?.
1) The modules are original from USA, they are the NEW battery pack without defective cells in it.
This is why zip brought it up, I think, correct me if wrong zip.
The defective cells where out of line from the USA and could appear fine.
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 25, 2014 7:39 pm

megacycle wrote:This is why zip brought it up, I think, correct me if wrong zip.
The defective cells where out of line from the USA and could appear fine.
As wb9k has pointed out, anything not OEM sourced to A123 for use in electric vehicles, or direct from the factory sourcing through http://www.buya123batteries.com/ must be considered "grey market". Hence, there is a risk in their purchase. My understanding is that the Linova MI factory came on line for the Fisker Karma, there were calibration problems with the laser welding machine, and then bankruptcy, all in the same frame of time. So the cells were good, the battery packs were not. Packs were then sourced out to China for recycling. But rather than materials recovery, the cells got resold through the likes of VIctpower and others.

That much is fact. Now, I'm reading between the lines, but then A123 came out of bankruptcy with its new owner, the Wanxiang Group. Things tightened up. A shipment of to-be-recycled batteries got locked into a warehouse by customs and there they sat. Until recently, when OSNPower managed to get them released, and here they are again for sale. But as stated, OSNPower is checking the cells. So these are effectively genuine new A123 AMP20 cells with full tabs and no defects, at half their retail price of $70 per.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 25, 2014 8:05 pm

arkmundi wrote: My understanding is that the Linova MI factory came on line for the Fisker Karma, there were calibration problems with the laser welding machine, and then bankruptcy, all in the same frame of time. So the cells were good, the battery packs were not. Packs were then sourced out to China for recycling. But rather than materials recovery, the cells got resold through the likes of VIctpower and others.


I think the issue is more complex with regards to the issue at the USA plant.
My understanding is some cells were short circuited during the welding process and still went through, but yeh the full tab should be indicative of good cells :D
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 25, 2014 8:42 pm

megacycle wrote:My understanding is some cells were short circuited during the welding process and still went through, but yeh the full tab should be indicative of good cells :D
We'll never know the history of the cells. And nothing is indicative of "good cells" other than that they're good, through direct hands-on testing. Someone here at ES has to bite first and figured I'd give it a go. Here's a picture of my cells being packaged for delivery:
OSNamp20.jpg
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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Sep 25, 2014 11:41 pm

I will ask my girlfriend Lan what she knows. But that is the story I remember two months ago when she told me. I added up 35.00 plus shipping. So 41.00 usd ea or so. I do love my 24s justing running at 30 amps as 40 and wot ( because my springs always broken ) would melt my 9c 2810. But triing to get a muxus 3000
Oh 534 cycles. Charge to 3.48v or so now at 4 amp.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 26, 2014 1:00 am

999zip999 wrote:I will ask my girlfriend Lan what she knows.
You two timing dog :pancake: :D thought you were in with Nancy :wink:
You'd do anything for some hot cells.
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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Sep 26, 2014 1:39 am

Two timing ? It just Nancy by day, but wait for the night and I just see Lan. A good place to dock my ship.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 26, 2014 3:37 am

999zip999 wrote:Two timing ? It just Nancy by day, but wait for the night and I just see Lan. A good place to dock my ship.
Good job you got at ev mate on the underside of the rock, hot bedding. :mrgreen:
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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Sep 28, 2014 3:26 pm

One is by Lan and two if by sea. I hope see dosn't see this or.
5.jpg
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4.jpg
Oh she's back
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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Sep 28, 2014 7:59 pm

you lucky boy has she got a friend?
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Sep 28, 2014 8:46 pm

The MXUS + 12fet controller, A123 72V on a Trek Shift 3 build will be back to the cylindrical 26650's, so as to pack it into the frame triangle. Proforma, those interested:
OSNPower26650Proforma.png
OSNPower26650Proforma.png (58.64 KiB) Viewed 2825 times
These are for the newest 2500mah cells. I'm getting just the cathode (+) welded with a tab for fullest flexibility in configuring my pack. That terminal, from experience, is the more difficult to solder, whereas the anode (-) terminal was rather easy.
Last edited by arkmundi on Oct 13, 2014 9:40 pm, edited 2 times in total.

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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Oct 01, 2014 3:02 pm

Those are the new A123 20ah cells from OSN you just brought ? I know about your 26650 build.

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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Oct 01, 2014 3:05 pm

999zip999 wrote:Those are the new A123 20ah cells from OSN you just brought ? I know about your 26650 build.
Yes, ordered & shipped - should see them at my door in about 3-4 weeks as they go FedEx ground & ship, avoiding flight rules. The completed 26650 build was for my Gitchee, cells from buya123batteries, soldered. This new pack will be for the MXUS build. Note these are coming in at $8.84 apiece, about what I paid before, but with the advantage of having a welded tab.

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Oct 09, 2014 8:58 pm

arkmundi wrote: Yes, ordered & shipped - should see them at my door in about 3-4 weeks
.
Which BMS are you going to use?
One that they supply?
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Re: PROMOTING OSN A123 20ah packs

Post by arkmundi » Oct 10, 2014 12:03 pm

megacycle wrote:Which BMS are you going to use?
One that they supply?
Not: I still ascribe to the BMS-free concept. But if I were, I'd definitely consider their BMS. As always, do your research before you buy..... OSNPower lifepo4 16S 40a battery BMS/ PCB for electric bike vehicles. If you're going to press your battery past low limits, then yes, I would. BMS-free means staying in the 80%<SOC<20% zone, hence having excess battery capacity.

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Re: PROMOTING OSN A123 20ah packs

Post by 999zip999 » Oct 10, 2014 6:40 pm

I would use a 60amp or really 80amp. So 16s 6p

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Re: PROMOTING OSN A123 20ah packs

Post by megacycle » Oct 10, 2014 11:48 pm

arkmundi wrote:
megacycle wrote:Which BMS are you going to use?
One that they supply?
Not: I still ascribe to the BMS-free concept. But if I were, I'd definitely consider their BMS. As always, do your research before you buy..... OSNPower lifepo4 16S 40a battery BMS/ PCB for electric bike vehicles. If you're going to press your battery past low limits, then yes, I would. BMS-free means staying in the 80%<SOC<20% zone, hence having excess battery capacity.
Thanks Arkmundi.
Yes I've asked for BMS on the pouch packs, as I found the pack's we were building out of these cells had a lot of individual cell drift, even when operated with any SOC, though charging was at 5 or 6C.
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Re: PROMOTING OSN A123 20ah packs

Post by devorion » Oct 12, 2014 10:52 pm

I've had some defective cells from OSNPower, my interactions handled by Nancy Peng (who goes by April on ES).

In my first batch of 24, I had 3 failures of which the cells had some kind of internal shorting issue when they had their first draw of current.
Nancy had these replaced, as you would expect.

In the next batch, of 2 cells which I'd just like to note, cost me $180 AUD to get here. 1 of the 2 failed in the same way as the first batch, first draw of current and then it started losing capacity rapidly. The other one is perfectly fine.

Nancy has not replaced this defective battery.

In fact, Nancy is no longer responsive to any of my emails. I'm not an irate or a blame placing person, my communications are always calm and collected (unless I'm talking to my children) :lol:

To note, in the second batch - the quality of the cell appeared odd, stickers were placed over the label stating the origin of the cell (USA). and a new bar code sticker over the old bar code sticker.

I would just like to put it out there that if you are considering getting something from OSNPower
  • do not expect a fault free product
  • do not expect a faulty item to be replaced
  • do not expect a response to your questions once a purchase has been completed and you're not offering any more money.
Now that your expectations are managed, feel free to throw your money away :)

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