BM EN-EL19 Battery & Charger for Nikon Coolpix S3100 S3200 S3300 S3500 – Big Mike's Electronics
Amazon.com: Synergy Digital Camera Battery, Works with Nikon Coolpix S3700 Digital Camera, (Li-Ion, 3.7V, 1000 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL19 Battery : Electronics