Lenmar SOLOXP-A3 Universal Li-Ion Travel Charger with USB Power Port for Casio NP-20 and NP-20DBA Ultra-compact universal Li-Ion travel charger for Casio NP-20 and NP-20DBA Built-in USB power port to charge your cell phone, PDA, iPod, MP3 player or other USB chargeable devices Worldwide 100-240V AC compatibility Works with virtually all other 3.6V to 7.4V Li-Ion batteries with the proper adapter plate (sold separately) Built-in fold-down, flip-up plug means there's no separate AC adapter to carry