Quite right, sir. The voltage drop during discharge is already included the Peukert Effect, so the boundries of the three areas I duscussed should have been: 1) charger efficiency = energy from power source to energy flowing down the charging leads towards the battery, 2) charging efficicency = voltage spread between charging current and battery resting voltage, and 3) battery efficiency = resting capacity in Wh to energy delivered at desired amperage. I believe that there is no overlap in this set of definitions.
Thank you for the feedback and helping me get this straight in my mental model of the system.
Eric
--- In electricboats@yahoogroups.com, "greenpjs04" <greenpjs@...> wrote:
>
> Hi Eric,
> I agree with your comments about charging efficiencies not being directly related to Peukert. My only point was if you calculate efficiency by measuing the output voltage during the entire discharge cycle, you have already taken Peukert into account because the voltage will drop faster than it otherwise would have due to the capacity lost to Peukert effect.
>
> By the way, while I happen to be an EE, I am definitely not a battery expert. I have learned a great deal from those on this forum including you.
>
> Thanks,
> Pat
>
>
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