Universal laptop charger with 8 interchangeable DC tips that fit most laptop models available on the market. The charger automatically adjusts the voltage when connected to the laptop and has protection against battery overcharging, so the device will switch to maintenance mode after charging. The charger can be used for charging or powering the laptop. Choosing the right charger: Correct plug - the shape and size of the plug must be identical to the original charger. Power (W) - should not be lower than recommended by the manufacturer; it is safe to use a charger with higher power. Voltage (V) - must match the value stated on the original charger or on the label on the bottom of the laptop. Current (A) - must not be lower than that stated on the original charger or laptop. DC tips included in the set: M4: 18.5V - Compaq, HP - 4.8 / 1.7 mm M5: 19.0V - Acer, Compaq, Delta, HP, Fujitsu, Gateway, Toshiba, Liteon, Asus, MSI - 5.5 / 2.5 mm M6: 19.0V - Samsung - 5.0 / 3.0 mm M7: 19.0V - Acer, Compaq, Delta, HP, Fujitsu, Gateway, Toshiba, Liteon - 5.5 / 2.1 mm M9: 19.5V - Dell (With IC) - 7.4 / 5.0 mm M11: 20.0V - Lenovo - 7.9 / 5.5 mm M12: 18.5V - HP, Compaq - 7.4 / 5.0 mm M25: 20.0V - Lenovo - 11.0 / 4.5 mm Specification: Input voltage: AC 100-240V, 50/60Hz 1.8A Output voltage: 15-20V/6A (MAX) Voltage adjustment: automatic Maximum output power: 90W Interchangeable DC tips: 8 Cable length: 1.1m Power cord length: 1.5m Weight with DC cord: 210g Charger dimensions: 110x65x20mm Packaging: box 160x125x50mm with hanger Protections: Against overcharging