LiitoKala 26650-50A 5000mah 26650 - great first impressions

Looks like a battery test/charge bay at a factory! Wish I had that many batteries.

That is what I would say too ā€˜mattlwrdā€™. :+1:
I wish I did too, along with the rack they are inā€¦ā€¦ :money_mouth_face:

Texas_Ace, I did a search for BAK batteries and this was one of the LINKS that came up. Scroll down for the photo.

I am not sure that I should trust you, that link led to Bing, who actually uses bing??

Google means your normal, DuckDuckGo means you understand how the world works.

Bing means something, just not sure what.

LOL

:smiley: ā€¦ :+1:
That is the exact reason I use ā€˜Bingā€™ Texas_Aceā€¦ā€¦. Iā€™m not ā€œnormalā€. :wink:

teacher, thanks for sharing that Bing link, just noticed it actually works pretty well in my unnormal computing device (rooted Android, custom desktop browser user agent, tweaked dpi setting, etc). Comparatively, using Google image search results in the freakin' thing relocating the shown images dynamically as the stuff loads and it does so in a pestering and nauseating way with image showing pop-ups re-adjusting my browser's zoom and page scroll level, ffs. Here, look at this photo of myself yesterday after using it:

Cheers ^:)

Original post date: Wed, 11/23/2016 - 17:25. Grammar fix.

Sure thing Barkuti, glad it was useful. :+1:

Yeah, from the ā€œselfieā€, it looks like using Google was a frustrating experience for youā€¦ā€¦ :smiley:
At least you have a chocolate chip cookie to ease the painā€¦ā€¦ā€¦ :wink:

Hello!

Fellows, I have good reasons to believe this cell can do a really nice 20A discharge curve and that, with a 2.8V cut-off, nearly 4.9Ah of capacity should be attained (maybe slightly more if the heating up of its internals results in a somewhat decrease on its internal resistance? Oops! Power output is what such a thing would drive up).

I say it because I am going to gamble on 'em for high power delivery, long story short here: Battery discharge curve analysis @E-CigaretteForum

Anyone willing to make a godblessed test on them?

Cheers ^:)

Sorry, just saw your comment.

Porn, you use Bing for porn. Seriously, search adult videos on Google and Bing, much better results on Bing.

ā€¦so Iā€™ve heard from a friend. :smiley:

The good thing about Li26650 is that it combines great capacity and one of the lowest resistance values( maybe the best?) - thats is quite important to us especialy since we are using mostly fed dd drivers, speaking of this capacity comes second :wink:

As a digital smoker( already a year) i cant see its implement-its quite heavy and devices that uses it are heavy and not pocketable , maybe for home vaping yes but its quite another story

Mitko, with (personally estimated and in concordance with the CPF test) maybe slightly above 22mĪ© of internal resistance, the Liito isn't the best in this regard.

Source: iJoy 40A 4200mAh 26650 Bench Test Results...overrated but a great 30A battery! @E-CigaretteForum

However, capacity matters also. A lower IR helps with power delivery, but if the available capacity is a lesser one, the steeper discharge curve slope means the lower IR and lower capacity cell will end up delivering lesser power at some point and beyond.

This means that, even if certain quality 18650s like the VTC5 have slightly lower IR than a LiitoKala 26650-50A(B), soon they're stomped by the massive capacity and cooling performance advantage of these bigger cells.

Cheers

P.D.: Glad to know that about bing. :-)

VTC5 have slightly higher IR that Li26650 actualy, at least this shows my DD drivers :slight_smile:
Li26650 performs as VTC5A

iJoy 40A 4200mAh - this one has to be tested

Can anyone find cycle life specs for these cellsā€¦ I agree that these cells are cheap, but I am thinking about using them in e-bike (14s2p) and to do this I have to do a lot of soldering, which would be too much work if they only lasted like 150 cycles (to 80%). Most of the time I will charge them to 4,1V (with 1,4A per cell) and discharge to 3,2Vā€¦ I now use lipo Multistar 10Ah cells, which have low IR - no voltage sag (at a little over 1C discharge ) and are light, but cycle life is not that great and I notice they dont like cold (below 0 celsius). Would these Liitokala 26650 be any better in cold weather? I would only drain max 7A per cell (on average below 5A). Or is it better to buy well known NCR18650B and use them in 14s3p config (so around 4A current per cell)?

UDO

Well we dont know how will they perform on a long temr base
My personal ones i charged like 10 times so far, they work great

Cold weather could be an issue, Liions dont like temps below 10deg c
Last winter i went hunting one morning, the temps here could be quite moderate cold ones, that partucular morning they were like - 20 and i lost 4 Samsung 25rs

lost 4 25r?
i have a versapak kit in my trunk that went to 0f and the packs did fine in the drill driving a ton of drywall screws after an overnight cold soak.
never seen low temps kill cells only cut their performance till they warmed up.
these are green 25r and lg he4.
both did equally well.
using them at a high rate warms them a bit.

Mine came today.after careful calibration of the dick smith esr and a test that gave 20 mohms this is the lowest yet.they are getting better.
edit.
after full charge i repeated.
now if i press very hard on the pointy probes i can get to .01 blinking to .02
so 19 or 18 mohms

Where did you order from?

banggood

Are you planning on checking the capacity?
If you do, give us an update please as to results and test equipment used. :+1:

UDO, you mean you are ā€œabsolutelyā€ sure your e-bike limits itself for max 14A amp draw (ā‰ˆ700W of power)? I reeally doubt it.

A 14S3P pack of NCR18650Bs, though slightly lighter, would be a baad idea, imho. 3P NCR18650Bs aren't high drain cells and, comparatively, would barely deliver slightly more current at the same output voltage than a single LiitoKala 26650-50A/B.

For a vehicle, no matter what, it is advisable to use sufficiently high drain/power cell packs. Either that, or its throttle response/slope performance will suck, not to mention battery life would also crumble.

It is also possible to build hybrid battery packs. If, for example, you were to like the idea of having a battery pack combining slightly less weight and capacity but preserve/enhance top power output, you could then assemble, for example, a 14SĪ±P pack, for Ī± = sum of a top notch high drain 18650 plus our 26650.

Cheers ^:)

Originally posted on Fri, 12/30/2016 - 04:10; typo fixup.

absolutely.test equipment is a triton hobby charger.
i still have 2 and will test them over the holiday weekend.
the other 4 from the order are in box mods and doing great.