Amazon.com: Gomadic Portable AA Battery Pack Designed for The Cowon J3 - Powered by 4 X AA Batteries to Provide Emergency Charge. Built Using TipExchange Technology : Cell Phones & Accessories
COWON J3 3.3" Black 16GB MP3 / MP4 Player - Newegg.com
Cameron Sino 1100mah Battery For Cowon Iaudio M3,x5,for I-audio X5 20gb,x5 30gb,x5v 20gb,m5l 20gb,m5 20gb,for Jnc Ssf-m3 20gb - Digital Batteries - AliExpress
AliExpress
Intelligent Dual Purpose DC Vehicle and AC Home Wall Charger suitable for the Cowon J3 - Two critical functions, one unique charger - Uses Gomadic Bra - Walmart.com