eeTao Replacement Power Adapter Compatible with Vkdemer 6 Inch Cordless Car Buffer Polisher 21V 2AH Lithium Ion Battery Power Supply Charger Cable Cord PS Wall Home Mains PSU Compatible with DC21V 2000mAh Battery Power Supply World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection eeTao 30 days Refund. 24 Months Satisfaction Exchange Note: Rechargeable batteries will not be used forever, with an average battery life of 1 to 3 years. If the battery is damaged, it will not accept charging. But it's not a problem with the charger eeTao Replacement Power Adapter Compatible with Vkdemer 6 Inch Cordless Car Buffer Polisher 21V 2AH DC21V 2000mAh Lithium Ion Battery Power Supply Charger Cable Cord PS Wall Home Mains PSU CECCCROHS 100-240