is extensive testing data on the capacity of the Optimas.
The Optima Yellowtops are rated at 1,152 Watt hours at the 20 hour
At the one hour rate which is closer to what they will see in competition,
the Optima Yellowtops should have around 750 Watt hours (375 Watt
hours per battery).
Dekas are rated for 960 Watt Hours (240 per battery) when they are
discharged over 20 hours (the 20 hour rate).
Lead acid batteries deliver less power when discharged at a faster
rate . We hope they will be competitive with the Optimas.