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About Akku New

A small family business

Akku New is a small family business from Gosseldange in Luxembourg. Your contact is Fernand Heinen. Our focus is cell replacement in existing battery packs with nickel or lithium-ion cells – for example for e-bikes, electric mopeds, scooters, power tools and household appliances.

For more than ten years we have been repairing defective batteries by replacing all cells with new ones. On request, we can increase the capacity at the same time. We use branded cells, for example from LG and Murata (formerly Sony), and tell you exactly which cells and how many of them we fit. On request, we also make custom-built battery packs.

As a family business, personal service is important to us: you speak directly with us, and we take time to answer your questions.

Workshop and equipment

Our pulse spot welder is self-built: Fernand Heinen built it himself and designed it himself, starting from the circuit board. We use it to connect the cells by spot welding, as specified by cell manufacturers.[1]

Cell holders secure the cells in the housing. When needed, we design suitable holders ourselves and produce them by 3D printing – this also makes it possible to accommodate unusual housings and cell arrangements.

How cell replacement works

From our workshop

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Location and directions

Akku New · Fernand Heinen
111 Route de Mersch
L-7432 Gosseldange, Luxembourg

Please make an appointment before visiting.

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Sources (1)
  1. Panasonic: specification of the NCR18650B lithium-ion cell (“Do not directly solder to the battery”, connection by spot welding) and Sanyo/Panasonic Safety Data Sheet SDS-IBT-00026 (2018). Link

Show us your battery

A photo of the battery and its rating plate and a short description of the fault are enough for an initial assessment.