Instruction Manual

1. Installing Batteries

Speedlite 550EX requires one of the following two types of batteries:

(1) Size-AA alkaline LR6 batteries x 4

(2) Size-AA Nicad KR15/51 batteries x 4

H Slide the battery compartment cover

* as shown by the arrow and flip it up.

p Insert the batteries with the + and -

^ contacts oriented as shown in the

battery compartment.

Close the battery compartment cover

as shown in the figure.