In brief
Since 2023
an ongoing arrangement with Winfield
53 batteries
in 24 orders, January to September 2026
4 battery types
from fuse and charge port to cell replacement
Where do the batteries come from?
Winfield Vertriebs GmbH in Oberhausen is the company behind Maxtron-Bikes. Winfield supplies e-bikes through several retail and sales channels. When a customer later has a problem with the battery, the case reaches Winfield through the point of sale or directly.
So batteries arrive with very different complaints. One no longer charges. Another is deeply discharged or has a blown fuse. Winfield does not need its own battery workshop for that: we handle that part in Beugen, the Netherlands.
What does KWS do for Winfield?
For Winfield, KWS diagnoses and repairs battery problems from warranty and service cases. For each battery we establish what is technically wrong and which repair or other next step is needed.
We do not decide on the warranty itself. Whether a case is covered, and what that means for the customer, is up to Winfield. We supply the technical side: the diagnosis with a proposal, and then the repair. How we set this up for brands is on the page about warranty and aftersales.
How does a battery move through the service chain?
Every battery takes the same route, from the point of sale back to the customer.
- The e-bike is sold through a retail or sales channel.
- The end customer reports a problem with the battery.
- Winfield registers the battery with KWS under a reference and sends it to Beugen.
- KWS tests the battery and reports the finding and the proposal.
- After approval comes repair, cell replacement or another technical solution.
- The battery goes back into the service chain.
A fixed process for recurring service cases
The arrangement is built for recurring battery cases. Winfield registers the batteries with KWS under their references. We examine every battery individually and report the technical finding and the possible solution.
For routine work there are fixed working agreements. For more complex repairs or a cell replacement we agree in advance which solution we carry out.
That way the process does not have to be set up again for every battery. From January to September 2026 batteries came in every month: 24 orders with 53 batteries.
Which faults do we see?
It is not about one battery type or one kind of fault. Through Winfield we have had four battery types in the workshop.
Most of the work was in electronics and fuses. Charge ports, deep discharge and the occasional cell replacement came on top of that. So only a small share of the batteries needed new cells.
For part of the electronics no original part is available. There we fit our own KWS circuit board, so the battery can still be repaired. More on that under BMS and electronics.
The result
Winfield has one fixed address for the battery side of its aftersales. Batteries from warranty and service cases get a technical diagnosis and are repaired where that is possible. A defective battery therefore does not have to be replaced by default.
After more than three years of working together we know the Maxtron batteries, their versions and the faults that return. A new shipment does not start from zero.
What does this mean for other brands and importers?
A manufacturer, importer or distributor does not have to organise the technical side of battery aftersales entirely in-house. The specialist battery part of warranty and service cases can sit with KWS permanently. You keep the customer contact and the warranty decision, we do the technical work.
The work with Winfield shows how that runs in practice. You can start small, with one battery type or one fault pattern in a pilot.
Frequently asked questions
No. KWS Seuren carries out the technical diagnosis and the repair. Whether a battery is covered by the Maxtron warranty is decided by Winfield.
Since 2023. From January to September 2026 there were 24 orders with 53 batteries, at least one in every month.
Through Winfield, KWS Seuren has had four battery types from Maxtron e-bikes in the workshop, including the ZZ1251004 (36 V). The work ranges from fuses and charge ports to electronics and cell replacement.
Yes. Private customers can have a Maxtron battery repaired by KWS Seuren as well; get in touch first so we can agree the shipment. Is your bike still under warranty? Then report the problem to your point of sale or to Maxtron first.
Yes, provided the battery platform can be repaired. KWS Seuren assesses that beforehand in a pilot with one battery type or one fault pattern. After that we lay down the decision rules and the reporting.
An aftersales pilot for your battery platform?
Tell us which platform it is and which fault patterns you get back. You can also see our approach for manufacturers and importers.