Ship-time is usually the dominant cost in a survey program. Every hour an AUV spends recharging is an hour the support vessel is paying day-rate for nothing. A non-flammable VSB buffer recharges fast enough to turn that math around, without the fire risk lithium brings onto a small, crewed platform.
Up to 60C charge means an ASV or dock-side buffer can turn an AUV around in a fraction of the time a lithium pack needs: more sorties per ship-day on the same vessel, same crew, same charter cost. Because the chemistry is non-flammable with no active cooling requirement, the buffer can sit inside a small hull or a cramped ASV payload bay without the fire-suppression and clearance a lithium installation would need in the same footprint.
Most of the time the right answer is a shore- or ASV-side VSB buffer feeding fast charge into the AUV, not a VSB pack riding inside the vehicle itself. The buffer belongs wherever the fire-safety, charge-cadence, or weight/space headroom matters most. On tightly constrained hull platforms, VSB's non-flammable chemistry still removes the pressure-housing and cooling overhead a conventional pack carries, freeing weight and volume for payload instead. Cells discharge to 0 V into a chemically inert state, a fundamentally easier shipping profile than live lithium for field kits and spares.
Every deployment is sized to the platform and duty cycle: tell us your vehicle and mission profile and we'll work through the fit.