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Re: CHEAP ORYGINAL CELLS 18650 3500mAh

Posted: Oct 09 2017 7:51pm
by Hardergamer
LI-ON's 18650 are safe i have cut them in half put them in fire blown holes in them when spot welding them, about 30+ cells i have busted made by Panasonic pf's Sony vt4/5 Samsung29e 30q's 25r etc.. and have never seen one explode! or start a fire but i have stabbed LI-POs and and they have burst into flames.. Just look at them Panasonic Tesla cells!

https://www.youtube.com/watch?v=c0IHNrW0QOA

Re: CHEAP ORYGINAL CELLS 18650 3500mAh

Posted: Nov 06 2017 1:15am
by jeorghe
Hi ,
someone knows how I can contact Tumich please ?
Thanks :)

Re: CHEAP ORYGINAL CELLS 18650 3500mAh

Posted: Nov 06 2017 2:45am
by brumbrum
Send him a private message. This is the only way he answers

Re: CHEAP ORYGINAL CELLS 18650 3500mAh

Posted: Nov 06 2017 6:58am
by jeorghe
Thanks.

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Nov 21 2017 5:53pm
by tumich
New part of Sanya Ga available, new in boxes, (never been welded)

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Nov 27 2017 4:19pm
by rio9210
Future plan for 20700B cells ?
Or just 18650 forever ?

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Nov 29 2017 2:21pm
by tumich
rio9210 wrote:
Nov 27 2017 4:19pm
Future plan for 20700B cells ?
Or just 18650 forever ?
Probably yes but who knows when :P

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Nov 29 2017 2:29pm
by wattshere
Energy density of 20700 seems worse than the 18650's at the moment.

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Dec 23 2017 10:43pm
by dfortal
Is there anyone in Toronto/Mississauga,Canada area willing to make me a complete battery pack 36v, ready to use with these sanyo cells?
thx

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Dec 23 2017 10:55pm
by tomjasz
dfortal wrote:
Dec 23 2017 10:43pm
Is there anyone in Toronto/Mississauga,Canada area willing to make me a complete battery pack 36v, ready to use with these sanyo cells?
thx
Lowest lifespan of the appropriate batteries available. Consider another choice or accept a shorter lifespan.He's had better cells available and I'm hoping soon...

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Dec 28 2017 2:18pm
by tumich
tomjasz wrote:
Dec 23 2017 10:55pm
dfortal wrote:
Dec 23 2017 10:43pm
Is there anyone in Toronto/Mississauga,Canada area willing to make me a complete battery pack 36v, ready to use with these sanyo cells?
thx
Lowest lifespan of the appropriate batteries available. Consider another choice or accept a shorter lifespan.He's had better cells available and I'm hoping soon...
Why do you think that have lowest lifespan? Depends on discharge rate like all cells. Maybe Panasonic's PF have better life span due to Fe in chemistry but doesn't have 3500mAh :) Sanyo Ga are optimal - relative high discharge with maximum capacity in that size.

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Jan 16 2018 12:46pm
by youyoung21147
@tomjasz I have bought these cells from Tumich last year. I put one in accelerated testing 4.01 to 2.8V /6A. After 1100 cycles it was still giving >2800mAh under manufacturer test conditions.

And in real life, my commuting ebike that has seen approx 60 cycles in a year still outputs 95% of its original usable capacity.

These cells are good for ebike use as long as you don't charge them fast and dont need the high current. Because their true Achille's heel is that the internal resistance increases a lot with cycling. The capacity fade is totally acceptable.

I would only rate the 18650BM as superior in terms of cycle life.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 17 2018 7:09pm
by tumich
New part of cells from 1,49$ each!
Sony V3, Samsungs 22P, 29E and Panasonic 18650A.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 17 2018 8:15pm
by tomjasz
tumich wrote:
Jan 17 2018 7:09pm
New part of cells from 1,49$ each!
Sony V3, Samsungs 22P, 29E and Panasonic 18650A.
YIKES!! Incredible prices on some real workhorse cells. My 22P 36V packs and 29E 48V packs are some of the most durable I have. Not high power but perfect for 15-20A applications. I wish I needed cells. These should not last long! NICE!!!

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 18 2018 3:23am
by Ptit_Philou
I use Sanyo GA 3500 in electric scooter E-ton/Matra e-Mo+ and they are very good.
Lot of tests on Internet to confirm that : among the bests, no hesitation ! :wink:

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 18 2018 10:25pm
by tomjasz
Shorter cycle life.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 19 2018 4:25am
by Ptit_Philou
OK Tomjasz : can you share data and links about shorter cycle life for Sanyo Ga 3500 please ? :)

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,49$ 2200-3500mAh!

Posted: Jan 19 2018 11:52am
by tomjasz
Ptit_Philou wrote:
Jan 19 2018 4:25am
OK Tomjasz : can you share data and links about shorter cycle life for Sanyo Ga 3500 please ? :)
Ptit_Philou wrote:
Jan 18 2018 3:23am
"Lot of tests on Internet to confirm that"
Lots of anecdotal posts referring to sag and heat when run at rated amps. Suggested by many power users that 5A is a better rating for longer service. There have been many discussion on ES FB. Obviously your mileage is different. but many users pushing 40A+ controllers are suggesting lots of sag and shorter cycle life!
I think a battery should be chosen on specific application not one battery for all.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,09$ 2200-3500mAh!

Posted: Mar 02 2018 1:03pm
by opperpanter
What's the verdict on the Panasonic NCR 18650A cells? Much cheaper than the GA cells.
Looking for 14S4P at 20A max just for daily commute small light pack, so 5A per cell. These NCR18650A look good, but are they old?

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,09$ 2200-3500mAh!

Posted: Mar 02 2018 6:44pm
by tumich
opperpanter wrote:
Mar 02 2018 1:03pm
What's the verdict on the Panasonic NCR 18650A cells? Much cheaper than the GA cells.
Looking for 14S4P at 20A max just for daily commute small light pack, so 5A per cell. These NCR18650A look good, but are they old?
5A per cells cont discharge for 18650A could be little too much.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,09$ 2200-3500mAh!

Posted: Mar 03 2018 3:35am
by opperpanter
tumich wrote:
Mar 02 2018 6:44pm
opperpanter wrote:
Mar 02 2018 1:03pm
What's the verdict on the Panasonic NCR 18650A cells? Much cheaper than the GA cells.
Looking for 14S4P at 20A max just for daily commute small light pack, so 5A per cell. These NCR18650A look good, but are they old?
5A per cells cont discharge for 18650A could be little too much.
I think it's going to be 10-15A continuous, 20A max. So 2,5A-3,75A per cell cont.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,09$ 2200-3500mAh!

Posted: Mar 13 2018 12:31am
by ls7corvete
Can anyone tell me how long these usually take to arrive in USA/FL? Looking for a couple hundred for misc projects.

Re: CHEAP NEW ORYGINAL CELLS LI-ION 18650 FROM 1,09$ 2200-3500mAh!

Posted: Mar 19 2018 1:58pm
by pick34
Hi Tumich / All

bought 96 18650GA cells a couple of months ago and just wanted to say thanks for it all going well.
Tested all the cells and each one is 3.49 or 3.50v !
Well packaged. And Tunich was very straight forward to deal with.

Keep up the good work. And Im really happy getting the 18650GA cells - perfect for what I need and I could not have done without these prices here in Europe.

Cheers - Allan

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Apr 01 2018 4:48pm
by Acido
tomjasz wrote:
Dec 23 2017 10:55pm
dfortal wrote:
Dec 23 2017 10:43pm
Is there anyone in Toronto/Mississauga,Canada area willing to make me a complete battery pack 36v, ready to use with these sanyo cells?
thx
Lowest lifespan of the appropriate batteries available. Consider another choice or accept a shorter lifespan.He's had better cells available and I'm hoping soon...
So he gets different batteries over time?
I need something like 30q or 25r or around 15-20a discharge, were there batteries like this before on here?

Re: CHEAP NEW ORYGINAL CELLS 18650 SANYO GA 3500MAH

Posted: Apr 02 2018 5:12am
by brumbrum
Acido wrote:
Apr 01 2018 4:48pm
tomjasz wrote:
Dec 23 2017 10:55pm
dfortal wrote:
Dec 23 2017 10:43pm
Is there anyone in Toronto/Mississauga,Canada area willing to make me a complete battery pack 36v, ready to use with these sanyo cells?
thx
Lowest lifespan of the appropriate batteries available. Consider another choice or accept a shorter lifespan.He's had better cells available and I'm hoping soon...
So he gets different batteries over time?
I need something like 30q or 25r or around 15-20a discharge, were there batteries like this before on here?
Yeah, often different cells, but 30q and 25r not as yet. Highest discharge cells he's had have been 10a constant, as far as i can remember. He mY have had some sony cells of higher at some point.