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Message
In the
battery world, CX rating seems to mean Capacity when discharged fully
(10.5 V) in X hours. I found some comments that said excess
heat and resistance reduces the efficiency as the current rises, which explains
why the amp hour rating his higher for a lower current draw. The only
specs given for the PC680 are:
C1= 12.3
Ah (12.3 amps for one hour)
C10= 16.0
Ah (1.6 amps for 10
hours)
They also
list "reserve capacity", which is a standardized rating for the amount of time
it takes to fully discharge a battery when drawing a 25 amps. For the
PC680, reserve capacity is 25 minutes. This spec is given for all the
Odyssey batteries, and in fact, the PC625 is slightly higher at 27
minutes.
Based on
these figures, I should have 45 minutes of capacity easily, and will plan to be
on the ground somewhere in 20 minutes or less.
Cheers,
Rusty
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