RBRfermata and RBRfermette³

The RBRfermata battery canister extends deployments of all instruments. It automatically configures the internal arrangement of batteries regardless of cell voltage (lithium at 3.6V, alkaline at 1.5V, Ni-MH at 1.2V) to provide the nominal output. Housing 48 individual D-cells, the RBRfermata has visual indicators that confirm the consistency of all cells in the canister before output is enabled to the 3x MCBH connectors mounted on the top cap

The RBRfermata extends deployments by providing up to 2.8kWh of energy to any underwater instrument, which is about 40 times greater than our standard battery carriage capacity. An innovative battery carousel coupled with quick-release handles facilitates simple, tool-free battery replacement. A variant with low-profile handles is available for flexible integration where space is restricted, e.g., with the Wirewalker (DMO). The instrument incorporates the in-the-housing detection, overcurrent protection with retries, 8V low voltage shutoff with retries, soft start, and 5A current limit per MCBH port.

As an alternative, you can also extend your deployments using the compact RBRfermette³. Featuring a single MCBH connector, this battery canister accommodates 8 AA cells.