Panasonic NCR18650PD 2.9Ah

[NiToNi]

I've been reading so many conflicting facts and opinions on these cells, so I have to ask straight out:

1. What is the real world constant discharge rate for these?

2. Do they have higher C than the 20R?

3. Are they NCM/NMC or NCA?

4. Are these what HPC is using in their Elite line of Li-NMC?

5. Can I do better if I want 40A from a 52V 10Ah pack as small and light as possible?

 

[amberwolf]

Have you checked any of these posts yet?
http://endless-sphere.com/forums/search.php?keywords=NCR18650PD&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=-1&t=0&submit=Search

 

[migueralliart]

I've been reading so many conflicting facts and opinions on these cells, so I have to ask straight out:

1. What is the real world constant discharge rate for these?
I would suggest not to go over 10 amps for a single cells while surging. Probably 2C constant. This is based off what I've seen in some discharge graphs from the budgedlight forum.

2. Do they have higher C than the 20R?
Similar discharge rates but the 20R I believe can be pushed harder without heating up quickly.

3. Are they NCM/NMC or NCA?
I believe they're NCA.

4. Are these what HPC is using in their Elite line of Li-NMC?
Dunno

5. Can I do better if I want 40A from a 52V 10Ah pack as small and light as possible?
I wouldn't go with such a small capacity for a pack unless you use the sony VT 2.6AH cell. Those can do 50amps surge. 4 of them will be excellent.

 

[myzter]

Anybody heard of the newer version:
Panasonic NCR18650PF
Supposedly different chemistry, better for long drain

 

[liveforphysics]

I've tried twice now on ebay to buy little sets of 4 off the NCR18650PD cells, both sets that arrived were fakes and had both poor performance and inconsistent cell-to-cell performance.

Both had perfect copies of the printed green shrink that comes on the real cell. There is a lot of demand for them right now and yet sources for the real thing are not easy to acquire, so the 18650-faking crew that used to be busy doing NCR18650A's seems to have transitioned to faking the NCR18650PD's now as the flavor of choice.

 

[myzter]

Hey did u try orbtronics or fastech ? they supposedly have originals... $6.75 per cell...
I contacted the trader who provided an ES member with some LG cells which panned out well..

price quote and I received shipping quote:

i just sell original battery ,if order 15pcs, shipping cost :54.0USD by UPS

if order 30pcs shipping cost :66USD by UPS (3-5working days arrival CA)

NCR18650PF price：4.44USD/pcs
http://pl1500132819.trustpass.alibaba.com/product/145230233-106165666/Pana_sonic_NCR18650PF.html
NCR18650PD price：4.27USD/pcs

Then there is fasttech with $13.62 for 2 pack + free shipping, and low as $12.56 for 5x 2-packs
http://www.fasttech.com/products/1420/10001980/1233700-panasonic-ncr18650pd-18650-3-6v-2900mah

tempting, I like to build a 12v 3s6p booster pack

 

[LSBW]

I've tried twice now on ebay to buy little sets of 4 off the NCR18650PD cells, both sets that arrived were fakes and had both poor performance and inconsistent cell-to-cell performance.

+1, LFP.
Apparently there's a tons of fakes right now, so every time you see a "deal" on 18650 cells, most likely it's a ripoff.

 

[RyanT]

I've tried twice now on ebay to buy little sets of 4 off the NCR18650PD cells, both sets that arrived were fakes and had both poor performance and inconsistent cell-to-cell performance.

Both had perfect copies of the printed green shrink that comes on the real cell. There is a lot of demand for them right now and yet sources for the real thing are not easy to acquire, so the 18650-faking crew that used to be busy doing NCR18650A's seems to have transitioned to faking the NCR18650PD's now as the flavor of choice.

Ugh seriously? There should be a law against this. I'm going to have to check the 18650b batteries I got off ebay (for something else).

 

[myzter]

NCR 18650B 3.7V 3400mAh Protected
2 cells for $14.90
With coupon: bgf120
http://www.banggood.com/2PCS-NCR-18650B-3_7V-3400mAh-Protected-Rechargeable-Lithium-Battery-p-90990.html

 

[cwah]

I've tried twice now on ebay to buy little sets of 4 off the NCR18650PD cells, both sets that arrived were fakes and had both poor performance and inconsistent cell-to-cell performance.

Both had perfect copies of the printed green shrink that comes on the real cell. There is a lot of demand for them right now and yet sources for the real thing are not easy to acquire, so the 18650-faking crew that used to be busy doing NCR18650A's seems to have transitioned to faking the NCR18650PD's now as the flavor of choice.

Do you have seller references? would be good to know.

And in term of capacity is it still ok?

 

[amberwolf]

There should be a law against this.

I'm pretty sure there are several applicable laws, should people wish to pursue legal recourse about it. The catch is actually physically locating the sellers and getting law enforcement wherever they are to do something about it, if they aren't local to you.