Amazon offers the Energizer 123 Lithium 3-volt Battery 6-Pack, model no. 30039800100635, for $4.73. Order via Subscribe & Save to cut the price to $4.02 and bag free shipping. That's $3 under our mention from six days ago and the lowest total price we could find now by $12. They're designed for digital cameras, high-tech flashlights, flash units, rifle scopes, and night-vision goggles.

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