TASCAM BP-6AA External Battery Pack for Portable Digital Recorder<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Increases DR-40 recording time from 17.5 hours to over 50 hours</li><li>Tripod screw mounts under DR-40</li><li>Powers through USB cable</li><li>Holds six AA batteries</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31ucDoaia-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41i69q1weVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41scRIkKYWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hYyn71f-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41ruPHizZcL.jpg" noproxy>