Armasight NAMPVS700133DB1 PVS7 GEN 3 Bravo Night vision goggles - Manual (Page 21)

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TABLE 3-3. ESTIMATED BATTERY LIFE
BATTERY TYPE NEGLIGIBLE IR USAGE IR USAGE 10% OF THE TIME
Lithium (BA-5567/U) 47-85 Hours 36-65 Hours
AA Alkaline (BA-3058/U) 89-160 Hours 68-123 Hours
NOTE:
The battery data in Table 2-4 represents operation at room temperature. When operating in
cooler conditions, battery life will decrease.
CAUTION:
Always verify that the Reset/ off-on IR/ pull switch is in the off position before installing bat-
teries.
Install either two (2) AA batteries or one (1) BA-5567/ U lithium battery as follows. Do not attempt to mix
battery types in the compartment.
1. Remove the battery cap by turning it counterclockwise.
2. Verify that the o-ring is present. If not, replace it.
3. Observe the polarity markings on the outside of the battery compartment and insert either two AA,
1.5 Volt batteries or one 3.0 Volt BA-5567/U lithium battery into the battery compartment, plus (+)
end first. (See Figure 3-2)
4. Secure the battery cap back on by placing it over the compartment and turning it clockwise. Verify
that it is firmly tightened to ensure a watertight seal.
C. Installation of the Eyecups. Perform the following procedure to install the eyecups onto the PVS-7.
Refer to Figure 3-2.
1. Carefully press each eyecup over the diopter cell retainer.
2. Rotate each eyecup into the proper viewing position. Adjust for the best fit. The eyecups must seal
around your eyes and prevent the light from the green glow from escaping.
D. Installation of the Demist Shields. Perform the following procedure to install the demist shields
on the diopter lenses. Refer to Figure 3-3.
alKalIne
batterIeS
(SIze aa)
battery cup
wIth o-rIng
lIthIum
battery eyecup
FIGURE 3-2. BATTERY AND EYE CAP INSTALLATION