EOTech 553 User Manual
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2.1.3
Replacing Batteries
Remove the battery compartment by lifting up on the locking cam lever and carefully sliding the
battery compartment away and up from the sight housing (Figure 3). After the battery
compartment is removed, slide the batteries out and replace them with a fresh set. The labels
on the bottom of battery compartment show the correct battery orientation. Always make sure
the gasket is free of dirt before the battery compartment is reinstalled or the water-proofing may
be compromised. To reinstall the battery compartment, point the sight towards the ground and
slide battery compartment onto base. Make sure there is enough clearance between the
contact and the batteries to avoid bending the contacts. Hold the battery compartment down
firmly against the base and close the locking cam. Before you push down on cam lever,
make sure the battery compartment sits all the way down and is parallel to the base
.
Verify correct battery installation immediately by turning on the sight and checking if the
holographic reticle appears. If the batteries are left in the sight backwards, they will be drained
of their power.
Fig 4: Pushbutton interface