Battery test/review summary for small batteries

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HKJ
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Battery test/review summary for small batteries

Battery test/review summary for small batteries

The full comparison can be found on my website.

DSC_0409



Doing my large 18650 battery test I also got some smaller batteries. I started with publishing individual reviews and has now enough batteries to make a full comparison of them.
This comparison will mostly include 10440, 14500, 16340 and 18350, but if other LiIon batteries in the same capacity range show up I will probably also include them in this comparison.

I do not plan to do many updates to the text of this article, but because the charts are fetched from my server they will be updated frequently. All the batteries I have tested will be included, and sometimes also for unpublished test/reviews that might be only partial done, these reviews will be published later when they are finished. This does also explain why a battery can be present in some charts, but not in other.

Because the charts will be updated I will not comment on how different batteries compares to each other in this article, that might not be valid after the next update of the charts.

Note: The picture above does show the batteries I have tested when publishing this article, more batteries will be added to the test, but the picture will not be updated.



Battery charts

Capacity

The first chart is the capacity at different current draw. To measure this capacity I have discharged the batteries down to 2.8 volt at the specified current rates (The 3A discharge is mostly done on IMR batteries).

CapacityTo3.6

Some lights cannot drain the battery down to 2.8 volt, but need considerable more voltage, especially to get full brightness. In the above chart I have measured the capacity drained when the battery is down to 3.6 volt, again at different current. Batteries that has a lot of capacity when measured to 2.8 volt does not necessary have that when measured to 3.6 volt, especially at high current drains.

Capacity-1.0

This curve shows how the battery voltage changes when capacity is used from the battery, this curve is made with a 1A current draw. The 1A bar in the above bar charts are based on this curve.

CapacityTime-1.0

Instead of showing the capacity of the battery, it is also possible to show how long time the battery will last at the 1A current draw.

Current

The batteries has a specified current, this current is the recommended maximum drain on the cell. If this specification is missing, it can usual be assumed to be 2xC, i.e. a 2400mAh battery will have a specified current of 4800mA or 4.8 Ampere. These assumed values are not shown in the chart.
Batteries with a PCB protection also has a trip current, this is at a higher value than the specified current. In my opinion 30% up to 50% above the specified current is best.
The "Protection trip" will be missing for unprotected batteries and because my test equipment is configured to starts at 1 ampere batteries with "Protection trip" below 1 ampere will also be missing.

Length

The 10440/14500/16340/18350 specifications defines the size of the battery, but protected batteries are longer, because a protection circuit must be added and sometimes there is also added a button top. Not all chargers and lights can take the longest cells.

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

Edited by: sb56637 on 08/26/2014 - 17:45
Suncoaster
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Thanks HKJ. Great info.

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MRTdiver
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Great source as usual

HKJ wrote:
This comparison will mostly include 10440…

Where are the 10440 batteries?

נֵר־לְרַגְלִ֥י דְבָרֶ֑ךָ וְ֝אֹ֗ור לִנְתִיבָתִֽי   (Psa 119:105)   

MattSPL
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Thanks for the info Smile

Will you be testing a Yezl 16340?

HKJ
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MRTdiver wrote:
Where are the 10440 batteries?

They are coming later. I expect to be adding batteries to this test during the next few months.

MattSPL wrote:
Will you be testing a Yezl 16340?

Depends on what price I can get them for.

 

 

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

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edc
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Great work!

 

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photon1k
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Suncoaster wrote:
Thanks HKJ. Great info.

+1

Yes, thank you HKJ for your on-going efforts to review popular batteries and chargers. The tests you perform and the documented results you publish are very helpful. Your contributions are much appreciated.

HKJ
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MattSPL wrote:
Ok thanks Edit: This place might be worth a look http://www.aliexpress.com/store/product/YEZL-16340-Li-ion-battery-with-p...

Battery price is fine, but I do not like $35 in shipping.

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

HKJ
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MRTdiver wrote:
Great source as usual
HKJ wrote:
This comparison will mostly include 10440...
Where are the 10440 batteries?

 

First 10440 battery added to the test, I did also add a AW14500 battery.

I am out of AW batteries now, next is TrustFire, Yezl and EFest, that will take some time, because I also need that test station for a few larger batteries (Like King Kong INR).

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

MattSPL
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HKJ wrote:

MRTdiver wrote:
Great source as usual
HKJ wrote:
This comparison will mostly include 10440…
Where are the 10440 batteries?

 

First 10440 battery added to the test, I did also add a AW14500 battery.

I am out of AW batteries now, next is TrustFire, Yezl and EFest, that will take some time, because I also need that test station for a few larger batteries (Like King Kong INR).

Thanks for the update Smile

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Sweet! TY for showing the data in a way that is so easily comparable. Great work HKJ. You rock!

~ Ledsmoke ~

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sb56637
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Incredible resource! Thanks so much for sharing this data with us. Frontpage’d and Sticky’d.

Budget Light Forum ...where Frugal meets with Flashlight!

HKJ
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sb56637 wrote:
Incredible resource! Thanks so much for sharing this data with us. Frontpage'd and Sticky'd.

 

The list is going to grow significantly, I have just about all Efest cells and also a couple of other in queue. With both small and large LiIon batteries I believe that I have enough batteries to keep one test station running until January.

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

HKJ
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I have made some brand indexes and direct links to the comparators. I hope this makes the navigation between all my battery tests easier.

 

Index to specific brands: AW, Efest, EnerPower, Keeppower, TrustFire
Index to comparators: 18350/16340/14500/10440/etc., 18700/18650/18500/17650/etc.

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

sb56637
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HKJ wrote:

I have made some brand indexes and direct links to the comparators. I hope this makes the navigation between all my battery tests easier.

 

Index to specific brands: AW, Efest, EnerPower, Keeppower, TrustFire
Index to comparators: 18350/16340/14500/10440/etc., 18700/18650/18500/17650/etc.

Hey there HKJ, looks great! You know, all this time I forgot to add your site to our list of “Related Sites”. I finally added you now. 8)

Budget Light Forum ...where Frugal meets with Flashlight!

HKJ
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sb56637 wrote:
Hey there HKJ, looks great! You know, all this time I forgot to add your site to our list of "Related Sites". I finally added you now. 8)

Thank you.

 

I am open for suggestions for other indexes, but because the indexes are manual work there must be a good reason for them.

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