CWK&reg; New Replacement Laptop Notebook Battery for Dell Latitude X1 U6256 X6753 Y6457 T61376 T6137 312-0341 X1 T6840 U6256 X6753 T6840 U6256 X6753 X1 U6256 312-0341 312-0342 Y6457 X1 312-0341 312-0342 T6840 Dell Main Battery Pack 11.1V 2400MAH Brand: Dell Type: Main Battery Pack 11.1V 2400MAH Part Number: T6137