A Reliable Subsea Pressure-Compensated Submersible Battery

The subsea community has relied on our SeaBattery Power Module for over 30 years. The durable design works in the most demanding subsea applications. This battery has a pressure compensated design and an 11,000 m depth rating. 12V, 24V, and 48V configurations are available.

SeaBattery Power Modules use Absorbent Glass Mat (AGM) lead-acid cells which add vibration and shock resistance. These Power Modules continue to work when inverted. The SeaBattery Power Modules do not have the same shipping restrictions as lithium ion batteries.

The SeaBattery enclosure is available for use as a junction box.


Pressure Compensated Design Icon
11,000 M Depth Rated Icon
Environmental SB-12/80 SB-24/40 SB-48/18
Depth Rating 11,000 m
Charging Temperature Range -15° C to 50° C
(5° F to 122° F)
Operating Temperature Range -20° C to 60° C
(-4° F to 140° F)
Recommended Storage Temperature Range 0° C to 30° C
(32° F to 86° F)
Electrical SB-12/80 SB-24/40 SB-48/18
Standard Configuration 12 volt
80 amp/hour
24 volt
40 amp/hour
48 volt
18 amp/hour
Max Discharge Rate IL4FS: 16 Amps
SEACON AWO-3 w/G: 100 Amps
Mechanical SB-12/80 SB-24/40 SB-48/18
Length  457.2 mm (18 in)
Width  304.8 mm (12 in)
Height  323.9 mm (12.75 in)
Weight in Air  48.20 kg (106 lbs)
+/- 2%
 49 kg (108 lbs)
+/- 2%
Weight in Water  18.2 kg (40 lbs)  19.1 kg (42 lbs)
Case  Molded Polyethylene
Diaphragm  Molded Polyurethane
Compensating Fluid  Inert oil
Connector SB-12/80 SB-24/40 SB-48/18
Connector Right angle diaphragm penetrator on 2-meter cable terminated with
Standard: IL4FS connector + Female Locking Sleeve
Optional (High Current): SEACON AWO-3FS w/G + Female Locking Sleeve
Chargers SB-12/80 SB-24/40 SB-48/18
Charger SB-CHG-SW/12 SB-CHG-SW/24 SB-CHG-120/48






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Prior to returning goods, please contact us via phone, fax, email, or our contact form below for an RMA number. We will need your product model number, serial number and any other pertinent information along with a description of the problem. When shipping your item, be sure that the freight is pre-paid and that the RMA number is clearly printed on the outside of the box. CODs will not be accepted.