Acdctek 9V AC/DC Adapter Compatible with Pyle Pro PDJ28WM PYPDJ28WM 7.4V Li-ion Battery Dual 8" 600W Portable Wireless Speaker Bluetooth Karaoke PA System PyleUSA KDP-AE090150U Power Supply Charger

• Safety protection mechanism supported: OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Input Voltage: 100-240V 50-60Hz.Output Voltage: DC 9V. Compatible with Pyle Pro Pyle USA PDJ28WM PYPDJ28WM 7.4V 3600mAh 26.64Wh DC7.4V 3.6Ah 7.4 Volt 3600 mAh 7.4 Volts 3.6 Ah 7.4VDC Lithium ion Li-ion Liion Battery Pack Dual 8" 8 Inch 600W 600 Watt Rechargeable Indoor/Outdoor Portable Wireless BT Speaker Bluetooth Karaoke PA System PylePro PyleUSA DC9V 9.0V 9VDC 9.0VDC 9 V 9.0 VDC Class 2 Switching Power Supply Cord Cable PS Wall Home Charger Mains PSU. Compatible with: Model KDP-AE090150U KDPAE090150U Dongguan Kingdrive Industrial Co., Ltd. Class 2 Power Supply. Tips: Rechargeable batteries don't last forever, the average battery last 1 to 3 years. If the battery is old/dead, it will not accept a charge. But not charger's problem. If you're not sure whether battery or charger is dead or not. You must have a volt meter in order to tell whether or not a charger is working.