Canon 550EX manual Installing Batteries

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

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1 Slide the battery compartment cover as shown by the arrow and flip it up.

2 Insert the batteries with the + and – contacts oriented as shown in the battery compartment.

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3 Close the battery compartment cover as shown in the figure.

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