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Batteries
Batteries
A reliable emergency power supply.
The SeaBattery Power Module is particularly valued in applications where dependability is critical, such as on diving bells. Absorbent Glass Mat technology prevents leaks and avoids shipping restrictions of modern lithium-ion batteries.
12 Volt Power

SB-12/80
80 amp-hour
The SB-12/80 is the workhorse of the SeaBattery line, delivering reliable 12V power with an 80 amp-hour capacity.
24 Volt Power

SB-24/40
40 amp-hour
The SB-24/40 offers the same robust SeaBattery design in a 24V configuration with a balance of power and size.
48 Volt Power

SB-48/18
18-amp hour
For applications requiring higher voltage in a compact package, the SB-48/18 delivers 48V power with an 18 amp-hour capacity.
Battery Features
Compare features and specs below to find the right battery for your underwater needs.
| SeaBattery® Power Module | ![]() 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 |
| Weight in Air | 48.20 kg (106 lbs) +/- 2% | 48.20 kg (106 lbs) +/- 2% | 49 kg (108 lbs) +/- 2% |
| Weight in Water | 18.2 kg (40 lbs) | 19.1 kg (42 lbs) | |
| Charger | SB-CHG-SW/12 | SB-CHG-SW/24 | SB-CHG-120/48 SB-CHG-240/48 |
SeaBattery™ FAQs
What is the SeaBattery™ Power Module?
The SeaBattery™ is a pressure-compensated power storage solution designed for full ocean depth applications. Because it is pressure-compensated (filled with oil to equalize pressure), it does not require a heavy pressure vessel, making it lighter and safer than hard-housed batteries.
What voltage configurations are available?
The SeaBattery platform is highly modular and can be configured for 6V, 12V, 24V, and 48V outputs, suitable for powering autonomous instruments, drop cameras, or backup systems on submersibles.
What is the lifespan of these power modules?
The design utilizes robust lead-acid absorbent glass mat (AGM) cells which are reliable and cost-effective. The SeaBattery system has a history of reliable operation for over 30 years in oceanographic exploration.
