Test / Review: Unknown 17355 3.0V 1000mAh (Green)

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HKJ
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Test / Review: Unknown 17355 3.0V 1000mAh (Green)

Unknown 17355 3.0V 1000mAh (Green)


DSC_2606

Official specifications:

  • Capacity: 1000mAh
  • Voltage: 3.0V
  • Rechargeable Times: Up to 500 times
  • Size: 33.5mm(Length ) x 17mm(Diameter )


Unknown%2017355%203.0V%201000mAh%20(Green)-info

This is IFR batteries, i.e. LiFePo4 with a maximum charge voltage of 3.6 volt. The actual capacity is much lower than specified.

DSC_2605

DSC_2607DSC_2608

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Unknown%2017355%203.0V%201000mAh%20(Green)-Capacity

The two tested batteries has very different capacity.

Unknown%2017355%203.0V%201000mAh%20(Green)-CapacityTimeHours

Unknown%2017355%203.0V%201000mAh%20(Green)-CapacityTime

Unknown%2017355%203.0V%201000mAh%20(Green)-Energy

Unknown%2017355%203.0V%201000mAh%20(Green)-PowerLoadTime

Unknown%2017355%203.0V%201000mAh%20(Green)-TripCurrent

Unknown%2017355%203.0V%201000mAh%20(Green)-Charge

The charge curve is a typical LiFePo4 charge curve (Voltage drops from 3.6 to 3.4 volt when charge is terminated).



Conclusion

These batteries are fairly cheap, but that does not excuse the huge difference in capacity or the way overstated capacity, I will call these batteries bad.


Notes and links

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
CR123A and rechargeable substitutes

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

Edited by: sb56637 on 08/26/2014 - 17:45
Milan
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Thanks, I’ve been using these batteries for several years and can only confirm those findings. Pathetic capacity and high internal resistance. It’s hard to believe Lifepo4 can have such big resistance.

Bort
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It seems chinese inflation has surpassed 300% and is now at least 400%

Reports of my clown related demise… might not have been exaggerated Sad 

sb56637
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Thanks a lot for the review! Frontpage’d and Sticky’d.

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

Jayc
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Bort wrote:
It seems chinese inflation has surpassed 300% and is now at least 400%

China has to be cutting edge.
Yellowhorse
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“Conclusion
These batteries are fairly cheap, but that does not excuse the huge difference in capacity or the way overstated capacity, I will call these batteries bad”.

Agreed!