LB1 High Performance Charger/Adapter for THINKPAD S420, S420, E40, E420, E420S, E425, E430, E50, E520, E525, E530, 14, 15, AND EDGE MODELS T400, T410, T420, T430, T500, T510, T520, T530, T60, T61, X1, W500, W510, W520, W530, W700, W701, L410, L412, L420, L421, L430, L510, L512, L520, L530, R400, R500, R60, R61, SL400, SL500, SL510, Z60T, Z61T, G50, Z60M, Z61E, Z61P, Z61M,G50, 3000, C200, 3000, N100, 3000, N200 19V 4.74A Power Supply Battery Charger 18 Months Warranty LB1 High Performance&reg; Pro Series Thinkpad S420 laptop chargers are custom manufactured to be 100% compatible and optimized for your Thinkpad S420 laptop. Thinkpad S420 Pro Series chargers utilize high quality components for better performance and longer life. Thinkpad S420 Pro Series AC Adapter meets and/or exceeds OEM specifications. Thinkpad S420 Pro Series AC Adapter will not void original manufacturer warranty. Laptop charger capacity: Voltage: 20Volts | 4.5A | 90W Fast shipping! 30-Day Money Back Guarantee & 18 Months Warranty. 100% Customer Satisfaction. Fast Same-Day Shipping by 12:00 PM PDT. 30-Day Money Back Guarantee. Exclusive $100000 Product Protection Plan!