AURELIO TECH 12V/1.2A Transportable 3-mode Battery Charger Tender Motorcycle Car Boat ATV RV Efficiency (at 100% load): &gt;=85% Model: 12V / 1.2A Dimensions: 3.8*1.9*2.2 inch Input Voltage Rating 110-240V Connection: NO Need to Disconnect AFTER CHARGED Manufacturer Part Number: BC-1212 Recommended Battery Capacity: 12V / 7-10Ah Input Frequency: 50-60HZ Maximum Output Power: 15W Ripple: &lt;=120mV Current Limit: 1.2A Leakage Current: &lt;=0.25mA Working Temperature: 50&#176;F - 122&#176;F Working Humidity: 5% - 95%