4xAA Battery Holder with DC Jack

4 x 1.5V AA Battery Holder Plastic Case Storage Box With DC5.5 * 2.1mm power plugIt holds 4 x AA size battery nicely. Here are the batteries that are compatible with it:PKCELL Heavy Duty AA Battery (4pcs)GP 4 x AA Supercell BatteryPKCELL Ultra Alkaline AA Battery (4pcs)PKCELL NiMH Rechargeable AA 2000mAh Battery (4 Pcs) You can use it to power electronic devices that accept voltage between 4.8V to 6.0VDC, example EDU:BIT.  Warranty Period: 12 months