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

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Barkuti
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UDO, you mean you are “absolutely” sure your e-bike limits itself for max 14A amp draw (≈700W 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 14SαP pack, for α = sum of a top notch high drain 18650 plus our 26650. 

 

Cheers Party

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

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snakebite
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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.

teacher wrote:
snakebite wrote:
banggood
Are you planning on checking the capacity?
If you do, give us an update please as to results and test equipment used. Thumbs Up
teacher
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snakebite wrote:
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.
Thank you ‘snakebite’, looking forward to the results. Thumbs Up

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snakebite
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cell 1 cycle 1
5117@1a
cell 1 cycle 2 after fixing the test rig.
5211@1a
cell 2 cycle 1
5277@1a
cycle 2
5451@1a

teacher
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snakebite wrote:
cell 1 cycle 1
5117@1a
Good info, thank’s ‘snakebite’. Thumbs Up
They (LiitoKala 26650’s) seem to be staying fairly consistent as time goes on. I hope it continues. Wink

You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant

I hate rude behavior in a man. I won't tolerate it. / Captain Woodrow Call _ Lonesome Dove /\ What happened was inevitable. The way it happened was unconscionable. / Lillian Stone It's not dying I'm talking about, it's living. / Captain Gus McCrae _ Lonesome Dove /\ Dynamite? It's like wine, it only gets better with age. / Lewis Gates /\ Rudy, you can't have no idea how little I care. / Monte Walsh /\ Why monitor a problem if you don't fix it? / LL _/\_ 13°34′4.6″N 107°42′50.4″E  _/\_  cabfrank speculates on a prediction ... Wink  _/\_'Q-team' supporter._/\_ 'J Team' supporter(until it imploded) _/\_ KMA=KeepMovingAhead <> FTR=ForTheRecord <> FU=ForeverUpward <> Karma never forgets./\ I’m done on this subject here._/\{width:70%}/\ "Don’t expect a Porsche when you pay for a Pinto"./RobertB_BLF /\ "Slow is Smooth, Smooth is Fast" /\Rudeness Level/\_ _/\TAB/\ "What’s the worst thing that could happen? Never hurts to think about it"./'hank'_BLF /\ LightWiki /\ LED Tint Chart /\ LED Tint Picture/\BatteryU

wstrachan
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Are you at all interested in modding my Utorch UT02 (Manker U21)? I would certainly pay for materials. Maybe work a trade of some kind? Maybe a new in package Lumintop TD16? Or something else.

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snakebite
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update.
i discovered high resistance in my test rig.banana plugs to my holder were losing their tension.
charged the cells again and started another discharge.holding 4.13v @ 1a at start.
was 3.96v.
so these are likely better than we thought.
stay tuned…

Tom E
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wstrachan wrote:
Are you at all interested in modding my Utorch UT02 (Manker U21)? I would certainly pay for materials. Maybe work a trade of some kind? Maybe a new in package Lumintop TD16? Or something else.

What do you want done with it? I like a dedomed XPL in it, but some might prefer it domed.

khas
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I received four from GearBest yesterday, first charge>discharge cycle @ 1A down to 2,8V :

I started the cycle this morning before I went to work so the cell voltage recovered a bit.

I am recharging them now :

everydaysurvivalgear
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What is the max current draw you get these from these in a direct drive set up? I just bought 6 shipping was 11 USD so i hope they do well.

snakebite
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well i found a bug.
kingkong 26.21mm
liitokala 26.63mm
too fat for one mod.
will post brand/model when i get it.
they fit all my lights though.

Texas_Ace
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These are a bit wider and a bit shorter then most other 26650’s, it fits like a glove in the L6, it doesn’t fall when inserted it just slowly lowers itself to the bottom.

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Barkuti
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Gonna get some serious amps mangled from them pretty soon… 

The BMS low voltage/under discharge protection works well. I accidentally hard-shorted the BP+/B- terminals while assembling the stuff, a lil smoke crept away…  Had to hook the thing up to the charger board to relive it. Quite interesting to notice my multimeter could actually measure some volts at the output terminals after the “accident”, a below 1Hz voltage signal oscillating between very high 6s and low 7s.

 

Cheers 

Copper is mine, copper divine!

«You may be taught and think for shame to be good but, in fact, a wise master said to me you wouldn't enter the heavens alive before going through your last bit of it.»

         

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