Test/review of Kentli AAA PH7 1180mWh (Blue)

HKJ

Flashaholic
Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
[size=+3]Kentli AAA PH7 1180mWh (Blue)[/size]
DSC_1437.jpg


Official specifications:
  • Voltage: 1.5V
  • Rated capacity: 1180mWh This is energy, not capacity

Kentli%20AAA%20PH7%201180mWh%20(Blue)-info.png


This is a LiIon battery with build in buck converter, i.e. it will deliver 1.5V out. It is AAA sized.



DSC_1438.jpg
DSC_1439.jpg


DSC_1441.jpg


There are two connections at the top of the battery, the usually +1.5V and on a ring around that a direct connection to the 3.6V LiIon battery, this connection is used for charging.


DSC_1442.jpg

DSC_1443.jpg

DSC_1444.jpg


Kentli%20AAA%20PH7%201180mWh%20(Blue)-Capacity.png


The battery has about 700mAh with loads up to about 1A, the voltage is 1.5V and do not drop like Alkaline or NiMH batteries.

Discharge%20capacity%20Kentli%20AAA%20PH7%201180mWh%20%28Blue%29.png


The 5mA discharge is done over 5 days.

Kentli%20AAA%20PH7%201180mWh%20(Blue)-CapacityTime.png


Kentli%20AAA%20PH7%201180mWh%20(Blue)-CapacityTimeHours.png


Kentli%20AAA%20PH7%201180mWh%20(Blue)-Energy.png


Kentli%20AAA%20PH7%201180mWh%20%28Blue%29%20A%20load%20sweep.png


The battery can deliver 2A current with a full cell, but as can be seen above it cannot maintain it to full capacity.

Discharge-Kentli%20AAA%20PH7%201180mWh%20%28Blue%29-pulse-0.5%2010%2010-IR.png


The electronic converter makes the resistance measurement a bit unstable.

LoadOnOff.png


LoadOnOffZoom.png


Switching a 1A load on/off makes the output jump less than 0.1V

NoiseNoLoad.png


noise1A.png




[size=+3]Conclusion[/size]

These batteries have 1.5V basically from start to finish, this means they work with equipment that has problems with NiMH voltages. The capacity is in the same range as normal NiMH batteries, but cannot match high capacity NiMH. They require a special charger.




[size=+3]Notes and links[/size]

How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium
 

HakanC

Newly Enlightened
Joined
Dec 19, 2006
Messages
97
Location
Sweden
Thankyou for the test.
Do you have any more tests of 1.5V LiIon AAA batteries in your pipeline?


 
Top