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AA Screw Terminal Battery Holder
A four-cell AA holder (98 x 74 x 20 mm) with snap-in open-top channels on 18 mm pitch for 14.5 x 50.5 mm cells, so you can see and swap cells without a tool. Each cell end gets a contact window plus an M3 heat-set boss (4.0 mm bore) on top of the 9 mm end wall, so brass straps and ring-lug wires bolt down with M3 screws instead of being soldered to flimsy tabs; four corner ears take M3 clearance screws for chassis mounting.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
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