Inverters & chargers for boats and off-grid

Power your setup – charge batteries, convert to 230V, and keep your system running.

Inverters – 230V from your battery
For onboard power

Inverters – 230V from your battery

An inverter lets you run standard 230V appliances directly from your battery. Perfect for coffee machines, chargers, tools and onboard electronics.
  • Clean 230V power from 12V, 24V or 48V battery
  • Use standard outlets onboard
  • Available in multiple sizes – from small to powerful setups
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DC-DC chargers – charge on the go
For charging while running

DC-DC chargers – charge on the go

A DC-DC charger charges your batteries while the engine is running. It ensures stable and correct charging – especially important for lithium batteries and modern systems.
  • Charge batteries while running
  • Stable and correct charging
  • Perfect for lithium and modern setups
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Batteri-overvågning
Monitor your power

Batteri-overvågning

Track your battery level and power usage in real time. Battery monitoring gives you full control and prevents unexpected power loss.
  • Accurate battery status
  • Overvåg forbrug og opladning
  • Bluetooth and app integration
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Battery chargers – safe charging for your batteries
For shore power charging

Battery chargers – safe charging for your batteries

A battery charger ensures safe and efficient charging from 230V shore power. It protects your battery and keeps your system ready to go
  • Automatisk og sikker opladning
  • Forlænger batteriets levetid
  • Suitable for lithium, AGM and gel
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Accessories for chargers and installation
Complete your setup

Accessories for chargers and installation

The right accessories ensure correct installation and maximum performance. Find cables, fuses, connectors and everything needed for a complete setup.
  • Kabels for safe installation
  • Connectors for shore power
  • Charger accessories
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Hjælp til valg af batteri

What should you choose?

Different battery types suit different needs. Here is a quick rule of thumb.

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Inverters – get 230V from your battery

An inverter converts power from your battery (12V or 24V) into 230V, allowing you to run standard appliances onboard. Perfect for coffee machines, laptops, tools and other equipment.

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Battery chargers – charge from shore power

A battery charger is used to charge your batteries from 230V shore power at the marina or at home. It ensures proper charging and helps extend battery life.

DC-DC chargers – charge on the go

A DC-DC charger charges your batteries while the engine is running. It ensures proper charging – especially important for lithium batteries and modern systems.

Why choose inverters and chargers from SejlStrøm?

Personal guidance

I help you choose the right inverter and charger, so your system matches your power needs and works in real-life use.

Samvirkende systemer

An inverter and charger must work together with your battery and power consumption. I will help you build a system where all components function correctly together.

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Selected for marine & off-grid use

The products are selected for boats, campers, and off-grid use – where stable power and reliability are essential.

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Swift delivery

I offer fast delivery in Denmark and support after purchase if you have questions about installation or setup.

Guides for Power & Charging

Learn how your electrical system works and choose the right setup.