DeepSea Power and Light SeaBattery:

Features: Full Ocean Depth Rated. Excellent Capacity Retention. Fully Invertable. Reliable Ambient Pressure Seals. Available in various voltages.

SeaBatteries are a unique submersible power system designed to perform in the high pressure/low temperature environment of the deep ocean. Deployments to 6,000 meters have proven SeaBatteries to be reliable at great depths. At the heart of each system is a maintenance-free, rechargeable, lead acid battery utilizing a non-liquid electrolyte. Each battery is pressure-modified and mounted in a virtually indestructible polyethylene case filled with inert oil. Built into the top of each case is a resilient urethane diaphragm providing continuous equalization with ambient pressure. The transparent diaphragm incorporates a molded valve assembly for filling and venting the SeaBattery. It also permits visual inspection of the battery status. The dual seal design ensures a leak-free seal. Carrying handles are included on the case.

Specifications:

Mechanical
Length:                 46.0 cm (18.1 in.)
Width:                  31.0 cm (12.2 in.)
Height:                 31.5 cm (12.4 in.)
Weight in Air:
        SB 12-76:       49.0 kg (108 lbs.)
        SB 24-38:       49.0 kg (108 lbs.)
        SB 12-65:       47.3 kg (104 lbs.)     
        SB 6-180:       48.2 kg (106 lbs.)

Weight in Water:                       
        SB 12-76:       19.1 kg (42 lbs.)      
        SB 24-38:       19.1 kg (42 lbs.)
        SB 12-65:       15.5 kg (34 lbs.)
        SB 6-180:       18.2 kg (40 lbs.)

Case:                           Molded Polyethylene
Diaphragm:                  Molded Polyether Urethane
Compensating Fluid:     Inert oil

Electrical
Standard Configurations:               
        SB 12-76:       12 volt, 76 amp hour
        SB 24-38:       24 volt, 38 amp hour
        SB 12-65:       12 volt, 65 amp hour
        SB 6-180:       6 volt, 180 amp hour
Other Configurations:         Available upon special order
Internal Resistance:            35 Milliohms
Maximum Discharge Rate: 30 Amps (limited by gauge of cable)
Connector:                        Right angle diaphragm penetrator on 2-meter cable
                                         terminated with IL4F connector

Environmental
Depth:                    Full ocean depth
Temperature Range:
        Charge:         -15 C to 50 C    (5 F to 122 F)
        Discharge:      -20 C to 60 C (-4 F to 140 F)