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

Yeah, I’ll stick to the official Shockli ones from mtn electronics :slight_smile:

Barkuti have some good posts because it is pointing to the actual manufacturer (source) of these batteries. The red ones at least have the accurate part number. So we should call all these 5500mAh “Power Long” batteries :wink: I wouldn’t bother to change the wrap - probably it would be a lower price too.

The wrap it doesn´t matter. Probably the same cell yes :wink:

Thanks Barkuty, good info :+1:

Alberto.

Hey! Remember you're taking a risk if buying these Dolidadas, please at least inquire the seller so you have a better picture (and better refund chances if the product isn't up to par).

I like searching stuff and refining searches. ;-)

Cheers

Does someone makes protected Shockli 26650 IMR cells?

I’m trying to sort out the mess with the top 26650 cells and fail….

Does anyone have a test of either:

  • Shockli IMR26650 which was not a test sample but actual buy
  • Dolidada 26650-55A
  • Liitokala 26650-55A
  • Keeppower P2660C
  • Keeppower UH2660
  • Skilhunt BL-255

?

I can’t find a single one…

Also, I note that Shockli IMR26650 has nearly identical specs as PLB INR26650-55A. There is a different length tolerance, slightly different charge rates. And different chemistry :person_facepalming:

Dolidada 26650-55A and Liitokala 26650-55A have very similar name to PLB INR26650-55A, but different specs. And different from each other.
Keeppowers have specced capacity matching what HKJ measured with Shockli. And IMR chemistry too. But slightly different size and weight.

EDIT:
Added Skilhunt to the list of sought-after tests…

Agro, battery rewrappers are known to tamper with OEM manufacturer specifications. It does not matter how much, it is tampering anyway. This is probably done to ”protect” their OEM secrecy.
LiitoKala is the “best” example in this business, as they do publicly list the OEM and model in their rewraps.
IMR chemistry? Probably one of the very few true IMR cells is the LG HB6 and its brand siblings. And you can believe that if LG can't do more than 1.4Ah effective in a cell with less than half the volume of a 26650, the other manufacturers can't do much better if at all. Are all of them lying? No, but I'd say deception is their daily bread. ;-)
Cheers ^:)

But why take a 5700 mAh cell (measured at 0.2C, 5900 with lower rate) and mark it as 5500 mAh?
Why take a 55A cell and say it’s 5000 mAh?

The only thing that comes to my mind is that they wanted to leave themselves some space to downgrade the cell and still meet their own specs.
Do I think that’s the real reason? No, I simply don’t know.

Frankly, I find it tempting to buy the knowledge. But buying 4 sets of cells when I just need 1 (cell, not set) is a gross overkill…

Agro, for me there's no good reason to downgrade a product, this is a looking for trouble attitude. Effort must be put in an industrial product for it to meet its specs within tight margin the entirety of its life.
Batteries aren't toys, and for a wrap I strictly prefer to stick to actual manufacturer specifications no matter how good or wrong they may look, it's their standards. In fact I prefer the OEM's wrap.
PLB usually rates capacity at 1C rate in their charts.
By the way, look at this sweet sale (not for overseas, kills the Free Shipping deal): https://www.aliexpress.com/item/Liitokala-2PCS-26650-rechargeable-battery-26650A-lithium-battery-3-7V-5100mA-26650-50A-blue-Suitable-for/1000004139007.html Rock bottom price and up to 6 pieces!
Cheers ^:)
Originally posted on Thu, 01/04/2018 - 23:00. Edited to fix font size.

The shockli is definitely the best of all those, at least for capacity and minimum voltage drop.

Good find with PLB specifying @ 1C. HKJ result is still higher, but not much. I’d say it’s fully consistent with the hypothesis that he actually tested a PLB cell.

Shockli specifies 1A instead…

You ask why downgrade? To first get good reviews then save money. While still meeting their specs. I still don’t see another explanation and still am not satisfied with this one.

BTW I already have a 26650-50A and want to order something better for the UT-02 I’m waiting for. :heart_eyes:

Have you measured those or seen anyone doing so?
Because I would totally expect at least the Keeppowers to be exactly what HKJ tested. That’s because we haven’t seen any other cell near this capacity.

Only HJK for the shockli.
I haven’t seen anyone test those 6Ah keepowers, do you have any links to tests?
Since the other keepower batteries have the advertised capacities then I would assume these 6Ah ones do too, so yeah that would be about the same as the shockli which has about 5.9Ah because it is underrated.
http://lygte-info.dk/review/batteries2012/Common26650comparator.php
However, if you compare a 5200mAh keepower vs a 5200mAh shockli on HJK’s tests you can see that the shockli has lower voltage drop under load.
Until there are some concrete tests on these 6Ah keepowers I think it is safe to assume that their performance will be similar to above, with slightly more voltage drop than shockli.

Tests of others? Null, nicht, nada. :frowning:
I don’t think there are many 5900 mAh cells on the market, so I expect KP and Shockli to be exactly the same.
But that’s a guess, not more no less.

I got a message from Shockli’s Simon:

PLB's INR26650-55A cell is rated at 1C discharge (5.5A) down to 2.75V. Since cells must meet a minimum capacity rating it a wise thing is to state a slightly “underrated” average cell performance in order for even the lower performing cells to qualify. 1C rating and “long cycle life” make sense for the electric vehicle market.

You can ask Shockli's Simon who's the OEM behind their “5500mAh” cell, too.

Cheers :-)

Yet another brand offering “5500 mAh” cells:
http://www.rofislight.com/products/rofis-mr70/

Dear Tom E ,Newlumen,Etex,Mattlward,Enderman,Smittymojo,wolfdog,Agro and use 26650 5500mah customer

Sorry to bother you. I have some question. Need your help.Thanks
Now I will sorting out which flashlight and e-cigarette models can fit the 26650 5500mah battery.so we can give some guidance for the BLF member when they buy. thanks very much, welcome to discuss.
Would you share your valuable experience that which flashlight and e-cigarette models can fit the 26650 5500mah battery.
Today Richard share the Convoy L6 can use the shockli 26650 5500mah battery .
Welcome feedback.

Yes sir. I just went over my 26650 lights with the shockli 26650 5500 mah ( button top and flat top).

Conoy l6. Button top works.
Convoy l2. Button top or flat top works.
Convoy x3. Button top or flat top works.
Fourseven mmu-x3. Button top or flat top works
Manker u21. Button top or flat top works
Lumintop sd26. Button top or flat top works
Olight rd50 seeker… button top works only. Flat top is too short.
Thrunite tc20. Button top or flat top works
Jaxman z1. Button top or flat top ok.
Lumintop odf30. Button top or flat top works.

Shockli-Simon, since you know your cell is this one, sharing size and footprint with the popular LiitoKala INR26650-50A/Lii-50A, you can also benefit from users of this later cell's reports with regards to flashlight or any other gear's suitability.

Did you mean the R50 Seeker? Self screwing up themselves, an Olight classic. Greedy lads and lasses, imho.

Cheers :-)