Page 65
Doc. 13300-REC-RevB (2022-05-02)
Recreational Modes
Operating Instructions
13. Changing the Battery
A large coin or washer is required to change the
battery
Remove the battery cap
Insert the coin or washer into the battery cap slot�
Unscrew by turning counter clockwise until the
battery cap is free� Be sure to store the battery cap in
a clean dry space�
Exchange the battery
Remove the existing battery by tilting the Petrel 3 and
letting the old battery slide out� Insert a new battery
positive contact first� A small diagram on the bottom
of the Petrel 3 shows the proper orientation�
Reinstalling the battery cap
It is
very important that the battery cap O-rings
are clear of dust or debris
� Carefully inspect the
O-rings for any debris or damage and gently clean�
It is recommended that the battery cap’s O-ring is
lubricated on a regular basis with an O-ring lubricant
compatible with Buna-N (Nitrile) O-rings� Lubricating
helps ensure that the O-ring seats properly and does
not twist or bunch�
Insert the battery cap into the Petrel 3 and compress
the battery contact springs� While the springs are
compressed rotate the battery cap clockwise to
engage the threads� Be sure not to cross thread the
battery cap’s threads� Tighten the battery cap until
snug and the Petrel 3 powers on� Do not over tighten
the battery cap�
NOTE: Battery cap O-rings are Type 112 Buna-N 70
durometer�
Battery Type Selection
After changing the battery,
select the battery type used�
The Petrel 3 attempts to guess
what type of battery is being
used� If the battery type is
incorrect, it should be manually
edited�
The Petrel 3 can accept most AA sized (14500 size)
batteries that output a voltage between 0�9V and 4�3V�
However, some batteries are better than others�
• Not all batteries support vibration�
• Battery types that support the fuel gauge feature
will give more warning before the computer dies�
• Some battery types perform better in cold water�
Shearwater recommends using Energizer Ultimate
Lithium batteries for best performance.
Supported battery types:
Check Battery Type
Voltage:
1.53V
1.5V Lithium
Battery Type:
Battery
Type
Approx.
Battery Life
Vibration
Support
Fuel
Gauge
Cold water
Performance
1�5V Lithium
Recommended
60 hours
Yes
Yes
Very Good
1�5V Alkaline
45 hours
No
Yes
Ok
1�2V NiMh
Rechargeable
30 hours
No
No
Poor
3�6V Saft
LS14500
130 hours
No
No
Poor
3�7V Li-Ion
Rechargeable
35 hours
Yes
Yes
Good
Battery life is based on medium brightness�
Alkaline batteries are especially prone to leaking�
This is a leading cause of dive computer failure�
Alkaline batteries are not recommended
�
