Nitro Z21: Stay self-sufficient on long boat trips with the fishing boat

Anyone who is underway for several days soon realises that the critical bottleneck is not just petrol - but energy. Echo sounders, live transducers, chart plotters, pumps, lights, bow engine: everything needs to be powered, even if there is no shore power connection available when you need it. The Nitro Z21 therefore has three separate power circuits - plus a range extender, which makes the boat really suitable for long journeys.

1. the 12-volt electrical system

The classic 12 V electrical system supplies everything the boat needs "as a boat": Navigation lighting, bilge pumps, basic consumers - and above all the starting function of the outboard motor. A conventional 12 V battery (100 Ah) is deliberately used here, not a LiFePo, but a tried and tested classic: robust, uncomplicated, reliable when starting - even in cold, damp and changing loads.

2. the 12-volt electronics network

All marine electronics run on a separate 12 V circuit, electrically decoupled from the on-board power supply. This is crucial because modern devices need "clean" power: no voltage dips when starting, no interference from pumps or lighting, but a stable supply and operational reliability. A LiFePo 12 V/200 Ah is fitted on board for this purpose - plenty of reserve for long fishing days, even when displays, transducers and live technology are constantly running.

3. the 36-volt system

The bow motor is more than a luxury on such a route - it is position control, safety and efficiency. The Minn Kota Ultrex therefore runs on its own 36 V system: LiFePo 36 V/ 100 Ah. The result: more than 100 lbs of thrust at the bow - and above all enough energy to work cleanly even in wind, current and long drifts without nervously monitoring every percentage point of the battery.

Read more about this:

• Report: Boat fishing adventure with influencers Dustin Schöne and Felix Weckesser

Charging on the move

Shore power is standard - but cannot be planned. Normally, LiFePo systems (12 V and 36 V) are conveniently charged using shore power. On a 1,000-kilometre tour, however, this is a pipe dream. The key: a range extender via the alternator. The principle is simple and worth its weight in gold in practice: the alternator of the outboard motor charges the starter battery as usual. As soon as it is full, the charging current generated is not wasted, but passed on via a suitable system. With the correct charging characteristic for LiFePo, the separate LiFePo systems (12 V electronics and 36 V bow motor) are then also recharged. Important: This only makes sense if there are really enough engine hours - i.e. many kilometres, a lot of running time, many driving phases. This is exactly the case on such a Rhine tour. The engine is running - and so electricity once again becomes a resource rather than a risk.

In short

Three separate power circuits ensure that the start/safety, electronics and bow motor do not interfere with each other. And the range extender makes the tour independent of perfect infrastructure: driving means charging - and on long journeys this is often the difference between "just getting by" and "remaining ready for action at all times".