Canon 550EX Camera Accessories User Manual


 
1. Installing Batteries
Speedlite 550EX requires one of the following two types of batteries:
(1) Size-AA alkaline batteries × 4
(2) Size-AA nickel-hydride batteries × 4
Slide the battery compartment cover
as shown by the arrow and flip it up.
Insert the batteries with the + and –
contacts oriented as shown in the
battery compartment.
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Close the battery compartment cover
as shown in the figure.
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