We specify the prices on parameters. 36 / 4-450 36 / 3-400 48 / 3-450 All charges with active cooling! 100% shutdown when the battery is fully charged Features: LED indicator Connector size - external, internal: 5.5x2.1 mm Maximum output power: 145 W Input voltage: 100-240V AC Output current: 2-4A Line frequency: 50-60 Hz Overvoltage protection Overcurrent protection 3-stage charging control Two-color LED indicator: (charging: red, fully charged or unloaded: green) High efficiency and low power consumption Operating temperature: 0C ~ 45C Storage temperature: -20 C ~ 70 C Chinese as in the photo! Before ordering, make sure that the charging connector fits your device. We do not ship for free!