
Manufacturer of battery charging clamps, jumper cables and ground straps made of brass and copper.
Christa Humpert Metallwaren GmbH
Werl · DENew on Amplifa
About us
Christa Humpert Metallwaren GmbH is a family-owned company founded in 1975 by Josef Humpert and based in Werl. Originally focused on welding accessories for arc welding equipment, production soon shifted to battery charging clamps and charging clips of exceptional quality. Today's product range includes battery charging clamps, battery clips, jumper cables, battery-side and motor-side ground straps made of braided copper, as well as ground clamps. Products are made predominantly from brass, for example in the form of cast charging clamps for larger vehicles, and from copper for cables and braids. Customers include major accounts throughout Germany, across Europe and overseas. The company employs six staff plus seven temporary workers and has been operating as a GmbH since 2003.
- Site
- Werl
- Processes
- Manufacture of battery charging clamps / charging clips (Battery Terminal Clamps / Battery Clips), Manufacture of jumper cables (Battery Booster Cable / Jumper Cable), Manufacture of battery ground straps (Braided Copper Straps), Manufacture of motor ground straps, Manufacture of ground clamps (Ground Clamps), Manufacture of welding accessories for arc welding equipment, Manufacture of battery clips (Batterieclipse), Manufacture of battery charging clamps and charging clips
- Materials
- Brass (cast brass for battery clamps), Copper (cables, braided ground straps), Brass, Copper
- Founded
- 1975
- Employees
- 6 (plus 7 temporary
- Industries
- Automotive accessories / Automotive, Retail trade / Workshop supplies, Retail trade / Workshop supplies (Products for Professionals)
- 01
Component manufacturing (cast brass clamps)
- 02
Cable and braid processing
- 03
Assembly (jumper cables, ground straps)
- 04
Distribution national and international
Materials & Processes
Brass
Cast brass for battery charging clamps and ground clamps; for larger vehicles the especially robust version is recommended.
Copper
Copper cables and braided ground straps for conductivity in jumper cables and grounding connections.
Locations

Werl
DEHeadquarters, production and sales
- Materials
- Brass, copper
Products






Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of battery charging clamps / charging clips (Battery Terminal Clamps / Battery Clips)Assembly | – | – | – | – | Brass |
| Manufacture of jumper cables (Battery Booster Cable / Jumper Cable)Assembly | – | – | – | – | Copper (cables), Brass (clamps) |
| Manufacture of battery ground straps (Braided Copper Straps)Assembly | – | – | – | – | Copper |
| Manufacture of motor ground strapsAssembly | – | – | – | – | Copper |
| Manufacture of ground clamps (Ground Clamps)Assembly | – | – | – | – | Brass |
| Manufacture of welding accessories for arc welding equipmentAssembly | – | – | – | – | – |
| Manufacture of battery clips (Batterieclipse)Assembly | – | – | – | – | – |
Additional services
History
- 1975
Founded as a sole proprietorship by Josef Humpert; initially manufacturing and distribution of welding accessories for arc welding equipment.
- 1980
Move from the home basement and garage to the current company building; product range expanded to include battery charging clamps, jumper cables and ground straps.
- 2003
Conversion of the sole proprietorship into a GmbH; Birgita Humpert and Franz Düsener take over the management.
- 2007
Josef Humpert retires from active professional life and continues to support the company as an advisor.