Battery Pack User Guide March 2020 P.2
Introduction
The Ocean Sonics Battery Pack
is a submersible unit that
provides additional power to one or more hydrophones for long
term deployments. The pack uses a maximum of 72 D-cell
batteries that are field changeable and can provide power for
one hydrophone for 30-90 days. All battery packs are made of
lightweight glass fibre composite case. There are 3 types of end
cap materials for varying depth ratings of 200m (Engineered
Plastic), 900m (Anodized Aluminum) and 3500m (Titanium).
Above weights are for a 200 m depth rated battery pack. Weights will differ slightly
depending on depth rating, due to end cap material.
Number of days the
Battery Pack can
power hydrophones:
Number of
Channels
Alkaline
Lithium
1
30
90
2
15
42
3
10
26
4
7.5
19
The
B3
model of Ocean Sonics Battery Packs
can be easily configured for the use with
alkaline
or
lithium
batteries. Internally, each
cell stack is individually protected against
reverse bias; as well as the accidental
population of cells at different charge states.
Undervoltage and overvoltage detection
circuitry is also present. This circuitry is
integrated to assure the battery pack output
voltages are always within specification.
Specification
Alkaline
Lithium Primary
Nominal Voltage (range)
28 V (15 to 29)
22 V (18 to 25)
Battery Capacity
1500 Wh
4500 Wh
Depth Rating (extended)
200 m, 900 m, 3500 m
900 m, 3500 m
Weight Empty (in air)
16 kg
16 kg
Weight Full (in air)
26 kg appr.
23 kg appr.
Weight Full in Seawater
9 kgf appr.
7 kgf appr.
Overall Length
70 cm
70 cm
Outside Diameter
18 cm
18 cm
