Mobile energy and onboard electrical systems for motorhomes, expedition vehicles and boats
Planning, retrofitting, troubleshooting and service for solar systems, lithium batteries, charging, inverter, heating, water and onboard electrical systems – directly on site.
Technology that must work reliably on the road and on the water.
KW Service & Repair supports customers with modern energy, heating, water and onboard electrical systems – from individual retrofits to complex troubleshooting.
Energy & autonomy
Solar systems, lithium batteries, charging boosters, inverters, shore power, battery management and energy monitoring.
Onboard systems & energy management
Planning, installation, optimization and diagnosis of complex onboard electrical systems with clean structure and traceable technology.
Troubleshooting & diagnostics
Systematic troubleshooting for intermittent faults, charging problems, failures and unclear technical issues.
Heating & climate
Service, diagnostics and optimization of heating, hot water, refrigeration and air-conditioning systems.
Water systems
Water treatment, filtration systems, pump technology and individual supply solutions.
Custom solutions
Individual technical solutions for motorhomes, expedition vehicles, boats and commercial vessels.
Not only the technician comes to you. A fully equipped mobile workshop does too.
Many jobs can be checked, prepared and carried out directly on site. This saves unnecessary workshop downtime and enables solutions where the vehicle or boat is actually used.
From small vans to commercial shipping.
Every project is different. That is why KW Service & Repair does not deliver off-the-shelf solutions, but technically clean systems for the specific application.
Technology is not just a profession here. It is a passion.
After training as an information electronics technician for devices and systems and attending the master craftsman course in electrical engineering, Kai Wätjen worked for many years as a service technician in electronics, refrigeration and heating technology.
He has been on the road with a mobile workshop since 2014. Since 2025 he has focused completely on KW Service & Repair, supporting customers in Germany and abroad – from small campers to commercial shipping in the Netherlands.
The goal: not simply installing components, but creating solutions that work reliably.
Brand technology for demanding systems.
KW Service & Repair works with proven manufacturers and components from energy, onboard electrical, heating and supply technology.
What customers often contact KW Service & Repair for.
For motorhomes, expedition vehicles and boats, reliable technology on the road and on the water is essential.
Motorhome electrics inspection & repair
Troubleshooting, reorganisation and service for onboard electrics, fuses, charging problems and failures.
Onboard systems & energy management
Clean structure for batteries, chargers, inverters, solar, shore power and consumers.
Lithium, solar & charger retrofits
Planning and installation of modern energy supply for more autonomy in vehicles and boats.
Diesel heating, hot water & water systems
Service, diagnostics and optimisation of heating, hot water, pump and filter systems.
Planning a retrofit or need help with a technical fault?
Send an inquiry or call directly. These details help prepare the service visit properly:
- vehicle or boat type
- location and desired service location
- short description of the problem or project
- existing technology and manufacturers, if known
- 2–4 meaningful photos of the system or installation situation