Description: For security and surveillance equipment, liquid crystal displays, LED lighting, communications equipment, audition products, digital products, instruments and other products. Product Details : Brand new and high quality. Built in safety recharging system which won't damage your bike's battery. LED indicator light shows when charger is working. Fit battery:48V 20AH Input voltage: 100V-240V, 50Hz. Output power: DC 48V. Output current: 2.5-3A. Size: 17cm x 7.9cm x 4.6cm. Note: please make sure the polarity connects correct. BUT this 48V adapter CAN'T operate on your devices if your device’s load power is bigger than 48V or your device’s rated current is bigger than 3A. 100% Brand New from Manufacturer. CONTACT US: Please contact through "Your Orders" tab in Amazon account (allow 24hrs for reply).