Battery Technician (Client Opening)

Rehmann•Ann Arbor, MI

2d•Onsite

About The Position

Altora, a Treetown Tech company, builds power and sensing hardware for unmanned systems. Battery packs, power management, and the electronics that keep an aircraft flying. Our technicians are the people who turn a design into a physical, flight-worthy article, and they do it for everything from a one-off engineering prototype to a repeatable production build. We are looking for a Battery Technician with three to seven years of hands-on experience who can work from a drawing without a lot of hand-holding. You will spend part of your week building packs to an established process and part of it at the bench with engineers, putting together first articles for designs that have never been built before. Those are different jobs, and we want someone who is good at both.

Requirements

Three or more years building electromechanical or electrical assemblies.
Battery pack experience is strongly preferred, but a strong harness, wire, or precision assembly background with a real interest in batteries will get our attention.
Comfortable reading schematics, wiring diagrams, assembly drawings, and a BOM.
Solid hand soldering.
Experience with spot welding, crimping, potting, or heat-shrink and insulation work on battery assemblies.
Familiar with DMMs, power supplies, electronic loads, and battery cyclers.
Careful with records. If it is not written down, it did not happen.
Able to work independently on a build and know exactly when to stop and ask.

Nice To Haves

Lithium ion or LiPo pack design exposure
BMS bring-up and configuration
UN 38.3 or DOT shipping requirements
ESD control practices
Small UAS or defense hardware experience
Basic 3D printing or fixture fabrication
Familiarity with ITAR-controlled work

Responsibilities

Pack build and assembly. Sort and match cells, spot weld and solder interconnects, build and dress harnesses, install BMS boards and sensing leads, pot and insulate, and close out the mechanical assembly. Work to the drawing, the BOM, and the revision that is actually released.
Prototype and first-article work. Sit with the engineering team on new designs. Build the first one, then tell us what was wrong with it. Fixtures, tooling, and assembly sequence are often undefined at this stage, and your input on what is actually buildable is a large part of the value you bring.
Test and verification. Run capacity, impedance, and cycle checks. Set up and operate cyclers and data acquisition. Record results cleanly enough that an engineer can use them a year from now.
Documentation. Turn what you did into work instructions other people can follow. Redline drawings that do not match reality. Keep serialization and traceability records accurate.
Safety and housekeeping. Lithium cells are unforgiving. You will own the safe handling, storage, and disposal practices at your bench and hold others to them.
Support the rest of the shop. Cable and harness work, box builds, and general electromechanical assembly come through here too. Some weeks the battery queue is light and something else is on fire.