Deep Sea Power and Light (DSPL) Batteries
Quick facts
- Subsea power source for all miso instrumentation requiring external power
- Dry weight, wet weight
- Physical dimensions: 18" long x 12.5" tall x 12" wide
- Average Voltage 24V
- Average Capacity 40AH
- Full ocean depth
- Recharge time 3 hours
The MISO Facility has 22 Deep Sea Power & Light (DSPL) SeaBatteries that are available to the Oceanographic Research community. The MISO Facilities’ (DSPL) Batteries are capable of outputting 24VDC with an average current capacity of 42amps/hr and are rated to full ocean depth.
Each DSPL battery comprises two PS-12400 (Pb-acid gel-cell) 12VDC batteries wired in series to produce 24VDC. The PS-12400 batteries are made with Absorbent Glass Mat (AGM) technology, meaning that saturated boron silicate mats are used instead of liquid electrolytes. AGM does not expand in cold environments like liquid electrolytes, so the batteries are not damaged by the 2-4°C ambient bottom water temperatures. The pressure is compensated by using Drakeol in a dual-sealed, urethane diaphragm on top of the polyethylene case.
Along with the DSPL batteries, the MISO Facility will also provide chargers. The chargers are 24V 8amp ‘smart’ chargers consisting of three stage, constant current, constant voltage and proportionally timed systems that provide fast charging and optimal timing of charge currents. The chargers provide appropriate power to the battery at each stage of the charge cycle, including trickle charging at the end of the cycle. The chargers have a strip of LEDs that provide confirmation of the charge state of the battery: red is charging, yellow is partly charged, green is fully charged. A normal charge period for the batteries is ~3-4 hours.
The DSPL batteries are used to power all MISO gear that requires external power such as lights, strobes, the datalink telemetry system, altimeters, and many additional sensors and instruments.
They also power larger systems like the MISO TowCam, and MultiCorers MC-800 and 400 (when outfitted with MISO telemetry gear), as well as smaller systems or instruments such as the OIS Camera and strobe.
Full DSPL SeaBattery User Guide: (link to pdf)
