Battery management

Stabilize your electrical system with a complete solution

Voltage, power, and battery type must match each other to keep your system stable.

The dimensioning of cables and fuses is also important for safe and efficient operation.

This ensures your onboard electrical system runs reliably – from start to anchorage.

Discover variants, materials, and designs built for maritime use. This way, you'll find equipment that remains reliable on board – season after season.

12 products

Deine Fragen / Unsere Antworte

Do I need a battery isolator or a DC-DC charger to separate the starter and house battery?
A battery isolator is the simpler and more affordable solution and is sufficient for many boats with the same battery chemistry. A DC-DC charger makes sense if the batteries are of different types – for example, lead-acid as a starter and lithium as a house battery – because it actively adjusts the charging profile.
Which battery monitor do I need, and where is the shunt installed?
The shunt is installed in the negative line between the battery and all consumers – all currents must flow through it, otherwise the measurement will be inaccurate. The display itself goes into the cockpit or a clearly visible location at the helm.
Can I use a normal charger for lithium batteries on board?
No. Lithium batteries (LiFePO4) require a precisely adapted charging profile without the usual trickle charge that lead-acid batteries receive. The wrong charger can permanently damage the cells or, in the worst case, become dangerous.
How do I calculate whether my alternator adequately charges the onboard batteries while driving?
Rule of thumb: The alternator should be able to supply at least 25 percent of the total battery capacity as charging current – for 200 Ah, this means at least 50 A. Keep in mind that voltage drop across the cable and losses due to a battery isolator reduce the actual current reaching the battery.