Samsung ICR18650-28A (18650 2800MAH)

[thawk]

nice

any chance to buy some of these? are they available yet :candle:

+1

 

[Whitedog1]

I looked at the Panasonic homepage and found that tere is listet an updated 18650 cell:

The old one: NCR18650 ~ 2900mAh :candle:

The new one: NCR18650A ~ 3100mAh :twothumbs

Details found HERE

What do you think about these upgraded cells :thinking:

 

[jirik_cz]

I NEED them! :devil:

 

[Turboled]

I need them too.

 

[drb]

Where can we get these?

 

[neoseikan]

The charger looks amazing too.
How did you build it? the case.

Yours, Neoseikan

 

[rantanplan]

Interesting! Where can I buy the cells and appropriate charger? 😀

Looks like a second chance for crappy chargers like older UltraFire ones 😗 ...

 

[neoseikan]

Looks like a second chance for crappy chargers like older UltraFire ones 😗 ...

Yes. I really don't like those.

 

[rpaloalto]

I just received 2 of these panasonic ncr18650 2900mah cells, Thanks to jtsgalaxy🙂

I'm in the process of darning them for their first cycle. I'm using a 12v automotive bulb. It is darning the cell at 550ma.

When should I stop? I know it is suggested to stop at 2.5v for these specific cells. Is that a true measured output or is that 2.5v stop at under load?

Also It seems this may take a while, should I use two automotive bulbs in a series?

I would also like to point out that with these panasonic cells. The warper does not cover the entire cell. It leaves about a 1mm exposed on the bottom. I have seen this before with LG cells. No big deal just put a wrap of PVC tape at the bottom.

 

[jasonck08]

2.5v is the lowest voltage you should discharge the cell to under load.

 

[rpaloalto]

2.5v is the lowest voltage you should discharge the cell to under load.

Thanks!
I may have went too far with my first cell. I let it go down to 2.2v that was under load. After a few minutes it went back up to 2.6 as a resting, no load voltage.
I'll stop the next cell at the 2.5v mark, while it's under load.

 

[jasonck08]

Thanks!
I may have went too far with my first cell. I let it go down to 2.2v that was under load. After a few minutes it went back up to 2.6 as a resting, no load voltage.
I'll stop the next cell at the 2.5v mark, while it's under load.

Just as an added buffer you may want to terminate the discharge at 2.8v. The diference in capacity is literally only about 50mAH at a 1A load. 2850mAH vs 2900mAH.

 

[rpaloalto]

With my second panasonic cell, I did stop at 2.8v under load like you suggested. Both were charged to 4.2v at 500ma each. It seems like the first cell that I let go all the way down to 2.2v charged back to 4.2v just fine.

I'm new to all this. I was not thinking when I was discharging the first cell.
Every time I took it off the load it went back to 3.7v. I kept trying to discharge to get a resting voltage of 2.5 like jtsgalaxy suggested.

I was impatient, and being new to CPF I had to wait for my posts above to be cleared by a CPF mod, before it even showed up in the thread.
Thats a good idea to keep spammers and trolls at bay, but it sure sucks when you got a question🙁

Anyway, I thought this thread was about the Samsung 2800ma cell🙂

 

[Whitedog1]

I looked at the Panasonic homepage and found that tere is listet an updated 18650 cell:

The old one: NCR18650 ~ 2900mAh :candle:

The new one: NCR18650A ~ 3100mAh :twothumbs

Details found HERE

What do you think about these upgraded cells :thinking:

Are these upgraded Cells already available somewhere? :naughty:

Are other high capacity 18650 cells out there?

I found these ones:

LG 18650 2800mAh

Samsung 18650 2800mAh (probably samsung and LG are the same )

Panasonic 18650 2900mAH from jtsgallaxy

[eBay links removed - DM51]

Anybody know how the 2800mAh cells perform?:candle:

 

[ptolemy]

Are these upgraded Cells already available somewhere? :naughty:

Are other high capacity 18650 cells out there?

I found these ones:

LG 18650 2800mAh

Samsung 18650 2800mAh (probably samsung and LG are the same )

Panasonic 18650 2900mAH from jtsgallaxy

[eBay links removed - DM51]

Anybody know how the 2800mAh cells perform?:candle:

i dont think the 3100mah are available anywhere yet.

 

[DLF]

Unless you buy a Tesla S.

 

[Whitedog1]

:wave: we just need to buy the battery pack to dismantle it

sounds like a groupbuy...

 

[Whitedog1]

News, News, News! :naughty:

New 3100mAh 18650 size cells are now available!!
http://www.cpfmarketplace.com/mp/sh...00mAh-High-Capacity-18650!-Cell-Made-in-Japan!
:twothumbs

 

[Whitedog1]

another update:

the panasonic NCR18650B 3400mAh Cells are now widely available :naughty: (on the market since a year or so...:thinking🙂

They seem to me to be the best cells on the market (at this moment).
available here (also protected ones available):
Dealextreme

Some Test from a fella forum member:
Eagle Tec 3400mAh
EnerPower+ 3400mAh
Batt Energy 3400mAh

 

[yvonne_chan]

Soooo, how can we get some of these? How much were they? I am assuming they are bare cells, with no protection circuit. Are they flat or buttontop?

Yes, the model name is bare cells. If with protection it won't be original Grade A Panasonic battery.
It needs to be assembled with pcb and cap to be protected. Regarding this, the quality of pcb is also very important to fit for a Grade A cells.