@James Garcia great question and totally the right thing to nail down before you commit to a power cycling architecture.
To be straight with you — that 1-second figure is a hot start number, meaning the module already has a valid almanac, ephemeris, and last-known position stored from a recent previous fix. A true cold start (dead battery, wiped state, no prior data) on any GNSS module is going to be 30–90 seconds depending on sky view and constellation availability, and that's not unique to the MultiNav Pro+ — it's just physics.
For your fleet tracker use case, the practical fix is to keep a small backup battery or supercapacitor on the GNSS module's memory supply line so it retains ephemeris through power cycles on the main system. If you pair it with RFOXiA's Power/Program Kit that's actually something worth thinking about since the supercapacitor system there is built for exactly this kind of always-ready scenario. That way you're cycling main power but preserving satellite state, and you'll genuinely hit that fast reacquisition time in the field.
If you're doing true cold power-offs regularly and can't maintain backup power to the module, budget for a realistic warm/cold start in your design — but honestly with the 18Hz fix rate you'll recover fast once it does lock.
