Addlogix FXU-PWR-KIT-DX Ac/dc Adapter and Charger Kit (Discontinued by Manufacturer) Simultaneously charges GBA SP and iPod Provides FireWire bus-power and USB bus charging Fits into any 12V automotive DC power source Three LED indicators for power source, and power usage Computer-tested regulated (and filtered) voltage/current; preserving iPod and GBA-SP battery health