Axiom offers a complete line of batteries for popular notebook computer brands like Dell. Keep an additional battery and maintain maximum mobility at the office, home, or on the go. Replace, upgrade or keep a spare and get powered by Axiom today. Axiom notebook batteries can be used to replace an old, poor performing battery or as a spare to allow more productivity when away from a power outlet. Add an extra notebook battery to an open bay drive and double the power capabilities of the computer. If an extra drive bay is not available, carry an extra battery with you to swap out the batteries when the primary battery loses power. Axiom wants to ensure you receive the right battery. In that effort we have made our part number system easy to understand. Simply add ''-AX" to the end of the OEM battery part number to get Axiom''s part number. For example, if you need a ''40Y6797'' for a Lenovo Laptop, the Axiom part number would be ''40Y6797-AX''.