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

Batteries and Chargers Rechargeable Batteries
1

Kentli AAA PH7 1180mWh (Blue)





Official specifications:

  • Voltage: 1.5V

  • Rated capacity: 1180mWh This is energy, not capacity



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







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.








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.



The 5mA discharge is done over 5 days.









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



The electronic converter makes the resistance measurement a bit unstable.





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







Conclusion

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.




Notes and links

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