Test / Review: Keeppower 18650 2900mAh (Black)

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HKJ
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Test / Review: Keeppower 18650 2900mAh (Black)

Keeppower 18650 2900mAh (Black)

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Official specifications:

  • 18650 2900mAh Protected Rechargeable Battery
  • Min Capacity: 2750mAh
  • Typical Capacity: 2900mAh
  • Normal Voltage: 3.6V
  • Quality Lithium Ion rechargeable cell
  • In Built Safety Circuitry
  • Maximum capacity and reliability
  • High Discharge Rate (Max 2C)
  • Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
  • 4.2 volts max voltage and 3.6-3.7 volts nominal voltage


Keeppower%2018650%202900mAh%20(Black)-info

The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.

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Keeppower%2018650%202900mAh%20(Black)-Capacity

Keeppower%2018650%202900mAh%20(Black)-CapacityTimeHours

Keeppower%2018650%202900mAh%20(Black)-CapacityTime

Keeppower%2018650%202900mAh%20(Black)-Energy

Keeppower%2018650%202900mAh%20(Black)-PowerLoadTime

Keeppower%2018650%202900mAh%20(Black)-TripCurrent

Keeppower%2018650%202900mAh%20(Black)-Charge



Conclusion

With a 2900mAh cell the battery is slightly below the highest capacity batteries on the market, but not much.
I will rate this battery as very good.



Notes and links

Keeppower is a OEM manufacturer, i.e. many of the batteries they produce is sold with other names on them.

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

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

Edited by: sb56637 on 08/26/2014 - 17:46
nekdo12
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HKJ wrote:
Keeppower is a OEM manufacturer, i.e. many of the batteries they produce is sold with other names on them.

 

Do you know which names?

HKJ
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Last seen: 1 day 23 hours ago
Joined: 05/24/2011 - 12:23
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nekdo12 wrote:

HKJ wrote:
Keeppower is a OEM manufacturer, i.e. many of the batteries they produce is sold with other names on them.

 

Do you know which names?

 

Yes, but I believe it is up to the dealers, if they want to reveal their source. They are of course welcome to post this information in the relevant threads.

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