Test/review of Shockli IMR26650 5500mAh (Black) 2017

53 posts / 0 new
Last post

Pages

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark
Test/review of Shockli IMR26650 5500mAh (Black) 2017

Shockli IMR26650 5500mAh (Black) 2017

DSC_7767

Official specifications:


  • Nominal voltage: 3.7V
  • Nominal capacity: 5500mAh
  • Charge voltage: 4.20V +/-0.5V
  • Standard charge current: 0.5A
  • Maximum Charge current: 2A
  • Maximum continuous discharge: 20A
  • Maximum pulse discharge: 30A


Shockli%20IMR26650%205500mAh%20(Black)%202017-info

A high current and high capacity 26650 cell.

DSC_7765DSC_7766

DSC_7768DSC_7769

DSC_7770
DSC_7771

Shockli%20IMR26650%205500mAh%20(Black)%202017-Capacity

The two cells are very well matched and as usual I test them a bit above specifications. They handled 20A fine, but did not like 30A continuous, it blew a fuse inside both cells, preventing me from doing the rest of the tests.

Shockli%20IMR26650%205500mAh%20(Black)%202017-Temp-15.0

Shockli%20IMR26650%205500mAh%20(Black)%202017-Temp-20.0

AT 20A they get rather hot, I measured about 78°C.

Shockli%20IMR26650%205500mAh%20(Black)%202017-Temp-30.0

At 30A they reached 86°C before the fuse blew.

Shockli%20IMR26650%205500mAh%20(Black)%202017-CapacityTimeHours

Shockli%20IMR26650%205500mAh%20(Black)%202017-CapacityTime

Shockli%20IMR26650%205500mAh%20(Black)%202017-Energy

Shockli%20IMR26650%205500mAh%20(Black)%202017-Charge



Conclusion

The performance of these cells looks very good and I will look on it as an advantage that they blew a fuse when overloaded (Instead of blowing up).
For vapers that want to use 30A, this fuse is no problem, I draw 30A for about 8 minutes continuous before it blew.



Notes and links

The battery was supplied by shockli.com for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
Compare to 26650 and other batteries

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Edited by: HKJ on 04/19/2017 - 14:19
EasyB
Online
Last seen: 11 min 47 sec ago
Joined: 03/09/2016 - 15:24
Posts: 1119
Location: Ohio

Looks like a great cell, possibly the highest capacity 26650 cell you’ve tested. It looks like it’s the 5500mAh version from PLB:
http://www.powerlongbattery.com/battery-cells/

This manufacturer also most likely makes the cell in the Liitokala 26650.

So it was not a protection circuit that blew, correct? Do you think it was something like a current interrupt device (CID) tripping, from getting too hot and internal pressure increasing?

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark
EasyB wrote:
So it was not a protection circuit that blew, correct?

Correct

EasyB wrote:
Do you think it was something like a current interrupt device (CID) tripping, from getting too hot and internal pressure increasing?

Yes, but the cell do not look like it vented, the top do still look pristine (usual there will be some traces when the cell vent).

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Etex
Etex's picture
Offline
Last seen: 17 min 17 sec ago
Joined: 09/29/2016 - 00:57
Posts: 139
Location: East Texas

Thank you for review. I just recently contacted Shockli (Windyfire) to inquire about their 26650 offerings. They informed me about this latest 5500mah. I was informed that diamater is 26.7±0.2mm, and that the positive pole is only raised 0.1mm (since I was asking about in series configuration for Convoy L6).

They instead recommended the 4200mah for my application. Smaller diameter and more raised positive pole.

Tom E
Tom E's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 08/19/2012 - 08:23
Posts: 9796
Location: LI NY

Nice review! Looks like a best performer, all around. For 26650's, the iJoy 26650 4200 might have to take 2nd place now, accept if running at 30A.

I'd like to buy a couple. Just emailed Shockli - can't find a retailer.

Dimking
Offline
Last seen: 11 hours 20 min ago
Joined: 01/16/2013 - 12:52
Posts: 183
Location: SW Russia

What happens after the fuse is blown? Is the battery usable?

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark
Dimking wrote:
What happens after the fuse is blown? Is the battery usable?

No, it is dead. It is not a protection circuit or PTC that can recover.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Dimking
Offline
Last seen: 11 hours 20 min ago
Joined: 01/16/2013 - 12:52
Posts: 183
Location: SW Russia
HKJ wrote:
Dimking wrote:
What happens after the fuse is blown? Is the battery usable?

No, it is dead. It is not a protection circuit or PTC that can recover.

Hi HKJ, the coolest tester in the world Smile

Do you know where that fuse is located?
Is it possible to the throw it away and use the cell “unfused”?

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark
Dimking wrote:
Do you know where that fuse is located? Is it possible to the throw it away and use the cell “unfused”?

It is part of the safety inside the can, i.e. you cannot get to it without destroying the cell.
The fuse is there to prevent the cell from doing something nasty (like explode).

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Tom E
Tom E's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 08/19/2012 - 08:23
Posts: 9796
Location: LI NY

Wondering if they can send you replacements - love to see the internal resistance result. I'd suspect it's below 0.4 from your discharge curves.

Dimking
Offline
Last seen: 11 hours 20 min ago
Joined: 01/16/2013 - 12:52
Posts: 183
Location: SW Russia

HKJ
That’s what I mean – pry it open, short the fuse and use it again. But not at 30 amps Smile

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark
Dimking wrote:
HKJ That’s what I mean – pry it open, short the fuse and use it again. But not at 30 amps Smile

I doubt you can put it together again if you pry it open. The cell may also take damage from the air.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Dimking
Offline
Last seen: 11 hours 20 min ago
Joined: 01/16/2013 - 12:52
Posts: 183
Location: SW Russia
HKJ wrote:
Dimking wrote:
HKJ That’s what I mean – pry it open, short the fuse and use it again. But not at 30 amps Smile

I doubt you can put it together again if you pry it open. The cell may also take damage from the air.

Oh, it’s somewhere inside the chemistry. Now I get you. Thanks.

stephenk
stephenk's picture
Offline
Last seen: 1 hour 3 min ago
Joined: 01/30/2016 - 05:09
Posts: 820
Location: Brisbane, Australia

Excellent review. Like the fuse for safety (of which the cut off point is way higher than general flashlight use). Just a shame that the cell is so wide, almost a 27650.

EasyB
Online
Last seen: 11 min 47 sec ago
Joined: 03/09/2016 - 15:24
Posts: 1119
Location: Ohio

Comparing the discharge curves to the liitokala 26650, the IR looks just a bit higher for this shockli cell.

It is a fat cell, like the liitokala cell. Makes sense if they are from the same manufacturer.

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 23 min ago
Joined: 02/19/2014 - 14:46
Posts: 1495
Location: Alhama de Murcia, Spain

Average internal resistance looks slightly below 25mΩ, just a gnat's ass higher than that of a LiitoKala 26650-50A. Definitively an improvement in energy density, with an actual power delivery rating. Verrry good! 

About the fuse, a bit sensitive I'd say. Temperature monitoring definitively recommended/advisable. 

 

Cheers Party

Originally posted on Mon, 04/24/2017 - 01:33; IR estimation fixed, content added and make upped.

Copper is mine, copper divine!

Votes & comments: https://imgflip.com/i/1rwxix 

Tom E
Tom E's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 08/19/2012 - 08:23
Posts: 9796
Location: LI NY

Maybe I don't understand it. In the comparator looking at 3A to 10A, the LK looks worse in 98% of the discharge curve.

http://lygte-info.dk/review/batteries2012/Common26650comparator.php

The Shockli has a higher V for just about the entire discharge. I thought that was better?

 

EasyB
Online
Last seen: 11 min 47 sec ago
Joined: 03/09/2016 - 15:24
Posts: 1119
Location: Ohio

Tom E wrote:

Maybe I don’t understand it. In the comparator looking at 3A to 10A, the LK looks worse in 98% of the discharge curve.


http://lygte-info.dk/review/batteries2012/Common26650comparator.php


The Shockli has a higher V for just about the entire discharge. I thought that was better?


 


The shockli would perform better over time because of its higher capacity, not because of a lower IR. At a given resting voltage, like fully charged at 4.2V for example, the cell with the lower IR will provide more current in a direct drive situation, but a cell with a lower capacity will drop its resting voltage quicker over time.

It seems like a compromise between IR and capacity oftentimes. The VTC5A would give more amps at start than this shockli, but obviously the capacity is in a different ballpark and would not be as suitable in a high power light.

Tom E
Tom E's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 08/19/2012 - 08:23
Posts: 9796
Location: LI NY

Here's the 5A comparison below. So accept for the first 0.25 discharge, the Shockli performs better - the blue line is clearly well above the red line. I though it should produce higher amps in a DD/FET mod, accept for the first 250 mAh. Am I reading this right? Does that first small advantage for the LK mean it will have a lower internal resistance?

I'm confused...

 

HKJ
HKJ's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 05/24/2011 - 12:23
Posts: 5216
Location: Copenhagen, Denmark

The internal resistance is measure at 15A (if the cell can deliver that), but higher voltage at the desired current is always a better metric to look at.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Tom E
Tom E's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 08/19/2012 - 08:23
Posts: 9796
Location: LI NY

OK, thanks! Didn't realize that. Still at 15A, the initial drop is steeper than the LK, but maintains a higher voltage after that first 250 mAh.

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 23 min ago
Joined: 02/19/2014 - 14:46
Posts: 1495
Location: Alhama de Murcia, Spain

 

If we are to substract the 20A from the 1A curves, we attain a dV/Ah one which reveals the average internal cell voltage drop for that 19A rate. This reveals close effective average internal resistance. Both first and last parts of the curve shouldn't be used, as there usually steep slope shifts happen because of dramatic changes in the cell's available energy and internal resistance.

This is as far as I understand for now.

 

Cheers Party

Copper is mine, copper divine!

Votes & comments: https://imgflip.com/i/1rwxix 

EasyB
Online
Last seen: 11 min 47 sec ago
Joined: 03/09/2016 - 15:24
Posts: 1119
Location: Ohio

The shockli maintains a higher voltage at a given point in the discharge, but that doesn’t mean its IR is lower. The IR determines how much the battery will drop its voltage (the resting voltage minus the voltage under load) at a given current. At a given point in the discharge curve the shockli will have a higher resting voltage than the LK because its capacity is larger, so even if the shockli drops a bit more voltage than the LK the voltage under load will still be higher than the LK because the shockli started at a higher resting voltage.

Essentially the vertical spacing between the discharge curves at different currents is proportional to the IR. In this case the shockli and LK cells have very similar IRs so the shockli’s extra capacity gives it the advantage in pretty much all applications. Comparing the Sanyo 20700A and B cells is more illustrative. At the 5A rate the higher capacity B cell maintains a higher voltage for most of the discharge, but at the 20A rate the lower IR A cell pulls away and is the more suitable cell.

torchythebatteryboy
Offline
Last seen: 6 days 51 min ago
Joined: 06/15/2011 - 08:54
Posts: 177
Location: Glasgow

I got 13 seconds at 60A continuous current from one of these: http://www.torchythebatteryboy.com/p/blog-page_27.html

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 23 min ago
Joined: 02/19/2014 - 14:46
Posts: 1495
Location: Alhama de Murcia, Spain

What is the purpose of such 60A test? That is discharging the cell in a quite stressful trial, about equivalent to start discharging the cell with a load of about twice the cell's internal resistance for most of those, with quick load resistance tapering off.

The only cells I know which could overcome such test with quite a success would be the A123 ANR26650M1-A/B LiFePO4 units. Mooch tested the “B” one and got most of the cell's capacity at 60A down to “just” 2.5V (A123 ANR26650M1-B 2400mAh 3.3V 26650 Bench Test Results...an extraordinary battery, with issues @ Mooch at E-CigaretteForum):

 

 

He doesn't uses 4 terminal holders for accurate voltage monitoring, so some current proportional drop should be substracted from added to the curves, at least this is what he told me on another cell review discussion.

 

Originally posted on Fri, 05/05/2017 - 02:34; lil fixup.

Copper is mine, copper divine!

Votes & comments: https://imgflip.com/i/1rwxix 

Dimking
Offline
Last seen: 11 hours 20 min ago
Joined: 01/16/2013 - 12:52
Posts: 183
Location: SW Russia

OMG you can start a small car engine with 4 of that cells. Shocked

torchythebatteryboy
Offline
Last seen: 6 days 51 min ago
Joined: 06/15/2011 - 08:54
Posts: 177
Location: Glasgow

I have so many batteries that have “60A” printed on the wrapper, I was curious as to how batteries would actually perform at 60A. This one charged up ok after discharging at 60A, so I suspect it has a temperature interupt device rather than a current interrupt device.
I wouldn’t go by the results from a West Mountain Radio CBA. I have three of them, but only use them for continuous current testing on NiMh batteries and ICR Li-Ion batteries up to 5A. The slew rate is far too slow for high current testing.

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 23 min ago
Joined: 02/19/2014 - 14:46
Posts: 1495
Location: Alhama de Murcia, Spain

The ANR26650M1-B was reviewed by HKJ long ago, with his old non 4-terminal setup.

With regards to the aforementioned testing divergence:

 

From HKJ's review of Samsung INR21700-30T.

 

Mooch's graph.

 

There's a little voltage difference among those curves, likely caused by the associated current travel path resistance to Mooch's voltage monitoring probes. Addressed by me in his review of it.

 

With regards to the actual limitations of the West Mountain Radio CBA, I have no idea besides knowing Mooch's setup is highly customized and improved.

Oh! By the way, 3.2V as high discharge cutoff? This is something I've somewhat got used to hearing from the E-CigaretteForum (LoL!). In my opinion, it is a very high and inadequate value, though of course I can understand its purpose.

There's no doubt their perspective/approach in all of this battery management stuff is quite different from mine. I always (or nearly) keep my li-ions at a max voltage of 14/15 charge voltage to maximize cell lifespan. Knowing how stressful is discharging a cell at around its effective limits/ratings, my philosophy tells me it is wiser to discharge at a slightly slimmer ratio (divide max by √2 as P = I²R) in order to substantially reduce thermal stress in continuous discharge. For pulse discharging, I'd limit myself to about the continuous rating or very little more. 

 

P.S.: yes, the ANR26650M1-B is a real high discharge champion. Good offers for it in AliExpress.

Copper is mine, copper divine!

Votes & comments: https://imgflip.com/i/1rwxix 

2524ball
Offline
Last seen: 6 hours 21 min ago
Joined: 02/22/2017 - 08:52
Posts: 14

good battery
to quick charge

Agro
Offline
Last seen: 58 min 55 sec ago
Joined: 05/14/2017 - 11:16
Posts: 227
Location: Ślōnsk

Any retailer shipping to EU?

Shockli-Simon
Shockli-Simon's picture
Offline
Last seen: 2 weeks 2 days ago
Joined: 09/30/2015 - 03:28
Posts: 6
Location: china

Hi Agro

would you can contact our UK reseller Torchy ,he stock the 5500mah battery .his website is http://www.torchythebatteryboy.com .

i do not know if he can ship the battery to you .

Pages