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Fifty pairs of silver-toned semicircular AA battery spring contacts, 12mm square, 0.3mm thick

Unique-Bargains

Unique-Bargains AA Battery Spring Contact 50 Pairs 12mm .3mm 43g

SKU CH-J58G-EXNT7

Fifty pairs of nickel-plated iron spring contacts sized 12 × 12 × 0.3 mm for AA battery compartments

  • Battery typeBattery Converter
  • 50 pairs included for multiple AA battery case builds
  • 12 mm square footprint fits standard AA compartments
  • 3 mm thin profile keeps assembly compact
  • Nickelled iron construction gives reliable conductivity
  • 43 g total weight adds minimal mass to projects

AA battery spring contacts for DIY repair

These 50 pairs of semicircular spring plates convert a single AA cell into a positive and negative contact for battery case boxes. The nickel-plated iron construction gives reliable conductivity for low-power projects. Hobbyists and repair technicians can use them to replace worn springs or build custom holders. They are not suited for high-current applications or multi-cell packs.

Conductivity holds steady under continuous low draw

The thin 0.3 mm profile keeps resistance low enough for steady milliamp loads such as remote controls, sensors or LED circuits. Heat build-up stays negligible during extended operation because the contact area matches the AA button-top geometry. Voltage drop remains consistent across the batch, so parallel strings behave predictably. Sudden high-current pulses will deform the springs, so avoid motor-start or flash loads.

Press-fit into standard AA slots with no tools

Each plate slides into the moulded ribs of a 12 mm square battery compartment and the spring tension locks it in place. Misalignment is the only common issue; if the semicircle orientation is reversed the cell will not seat fully. The nickel finish resists oxidation, but flux residue from hand-soldering can increase contact resistance if not cleaned. Battery cells are not included.

How it compares

Measured against everything we stock in Alkaline & Coin Cell Batteries, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 80% of the 190 comparable items (median $18.49).

Specifications

Product
Brand nameUnique Bargains
Power
Battery typeBattery Converter

Questions about this item

Do the 12 mm nickel-plated iron springs add noticeable resistance or heat in an AA holder used all day?

Each spring is 0.3 mm thick and weighs only 43 g for 50 pairs, so added resistance and heat are negligible in normal use.

What must I already own to use these 50 pairs of AA battery spring contacts?

You need empty AA battery case boxes that accept 12 x 12 mm semicircle plates; the springs themselves are just the contact hardware.

Will these 12 mm contacts work in the older AA battery boxes I already have?

They fit any AA case designed for 12 x 12 mm semicircle spring plates; check your existing holder's contact dimensions before installing.

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