Test/Review of Keeppower 26650 5200mAh (Black) 2014

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HKJ
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Test/Review of Keeppower 26650 5200mAh (Black) 2014
Keeppower 26650 5200mAh (Black) 2014

DSC_5768
Official specifications:
  • KeepPower 26650 3.6V/3.7V 5200mAh Li-ion Rechargeable Battery
  • Min Capacity: 5100mAh
  • Typical Capacity: 5200mAh
  • Normal Voltage: 3.7V
  • Quality Lithium Ion rechargeable cell
  • Maximum Capacity and Reliability
  • 4.2 volts max voltage and 3.6-3.7 volts nominal voltage

Keeppower%2026650%205200mAh%20(Black)%202014-info

26650 batteries are getting higher capacity, this cell sets the record for capacity.

DSC_5767

DSC_5769 DSC_5770

DSC_5771
DSC_5772

Keeppower%2026650%205200mAh%20(Black)%202014-Capacity

The two cells has very good tracking and capacity does not vary much up to 5A load.

Keeppower%2026650%205200mAh%20(Black)%202014-CapacityTimeHours

Keeppower%2026650%205200mAh%20(Black)%202014-CapacityTime

Keeppower%2026650%205200mAh%20(Black)%202014-Energy

Keeppower%2026650%205200mAh%20(Black)%202014-PowerLoadTime

Keeppower%2026650%205200mAh%20(Black)%202014-TripCurrent

Protection trips at around 9.5A.

Keeppower%2026650%205200mAh%20(Black)%202014-Charge



Conclusion

Very good capacity and good performance for a high capacity 26650 battery.



Notes and links

The batteries was supplied by Keeppower 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 other 26650 batteries

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

Ejected Filament
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Thanks for yet another helpful review HKJ. I see it says IC made in Japan, do you know who makes or where the cell is made?

djozz
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Finally the 26650 size battery has reached the capacity that fits the large size! Time to get a nice 26650 flashlight Smile

Thanks for another thorough test HKJ !

southland
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Thanks HKJ, agree with djozz, the capacity has now reached the point to make up for the larger size and weight over the 18650.

nofearek9
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thanks for the review,from where can we order those?

leaftye
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Illumination Supply has them.  They have the unprotected version.

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

HKJ
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Ejected Filament wrote:
Thanks for yet another helpful review HKJ. I see it says IC made in Japan, do you know who makes or where the cell is made?

Probably Seiko, but I do not know it.

http://www.sii-ic.com/en/semicon/products/power-management-ic/lithium-io...

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

HKJ
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leaftye wrote:
Illumination Supply has them.

That is the unprotected version.

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

Ejected Filament
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HKJ wrote:

Ejected Filament wrote:
Thanks for yet another helpful review HKJ. I see it says IC made in Japan, do you know who makes or where the cell is made?

Probably Seiko, but I do not know it.

http://www.sii-ic.com/en/semicon/products/power-management-ic/lithium-io...


I was actually asking about the cell inside, sorry for the confusion.
kronological
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nofearek9 wrote:
thanks for the review,from where can we order those?

I can’t seem to find them either. I don’t even see them on the keeppower website. Are they not available yet?

No one, after lighting a lamp, puts it away in a cellar nor under a basket, but on the lampstand, so that those who enter may see the light.

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kronological
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Anybody ever get a line on these?

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kronological
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Keeppower has them on their website now.

Keeppower 26650 5200 mAh protected

No one, after lighting a lamp, puts it away in a cellar nor under a basket, but on the lampstand, so that those who enter may see the light.

My Reviews: Ma

cat eyes evil twin
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well keeppower does not make them, so there should be some others on the market somewhere. i assume they’re chinese.
calvin sells them so he knows who makes them.
who makes them, calvin ?

kronological
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Calvin at Illumn has them now:

http://budgetlightforum.com/node/33543

No one, after lighting a lamp, puts it away in a cellar nor under a basket, but on the lampstand, so that those who enter may see the light.

My Reviews: Ma

CM2010
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Couldn't find these stocked in the uk so opted for the IMR version listed here from a uk seller on ebay, what actually turned up are the ones reviewed here.

http://www.ebay.co.uk/itm/181460241857

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Finaly, proud owner of a Powerex Maha mh c-9000 for my Eneloops:)

Antenne
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I’ve recently searched for a high current 26650 cell and found this very interesting report about the current Keeppower cells (in German, but there are ways to get it translated Wink
http://www.mountainprophet.de/2014/08/19/keeppowers-26650er-akku-schmuh/
It seems the repackaging Keeppower does with the wrapping and additional metal plates on the positive poles deliveres not the best performance you could get from these cells…
Since I was after a IMR cell I ended up with an order of a MNKE cell at Nkon since even Efest has them inside:
http://www.mountainprophet.de/2014/03/13/efests-neue-purple-ultrahigh-dr...

Tumbleweed48
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That’s a very nice review, but it appears to be a 26711 rather than a 26650. Good luck shoving three of those up your Yezl Y3.

I wish somebody would apply a more refined chemistry to 26650 cells instead of just always making them longer. Pretty soon they’ll be boasting 6500 mAh, but the cells will be 80 mm long.

musicmagic
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Tumbleweed48 wrote:
That’s a very nice review, but it appears to be a 26711 rather than a 26650. Good luck shoving three of those up your Yezl Y3.

I wish somebody would apply a more refined chemistry to 26650 cells instead of just always making them longer. Pretty soon they’ll be boasting 6500 mAh, but the cells will be 80 mm long.

He says that, right in the review.

If you can’t blind them with your brilliance, baffle them with your bullcrap.

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