4 Contemporary, Individual Outputs. It Allows The Activation, The Recharging, The Simultaneous Maintenance Of 4 Batteries, Of Any Type, Form Or Amperage With Relative Temperature Control. Power Supply: From 90 To 250 V - Alternating Current - 50/60 Hz. Output Current: 12 V - 800 Ma. Designed For Continuous And Constant Operation Over Time, Protected Against Short Circuits And / Or Accidental Reversal Of Polarity