Xtend Brand Replacement For Dell 77G21 Battery

Dell 77G21 Battery Revive your laptop life with a new Dell 77G21 battery. This 77G21 battery is compatible with the 2013 Dell XPS 13 UltraBook, and XPS 13-L321X and XPS13-L322X models.
Note: This battery is not compatible with the XPS 2015 models. This 6 cell Dell 77G21 battery is rated 7.4 Volts and 6350 mAh will run approximately 4 hours on a single charge. You can get even longer run times with the tips at the bottom of the page. We use the highest quality lithium-ion cells that charge faster and last longer. Our batteries can last six times longer than cheaper, lower quality batteries. We're so confident in the quality of our batteries that we offer a 2 year warranty and 30 day guarantee.
Brand: Xtend;
Voltage: 7.4 volts;
Battery Capacity: 47 Wh;
Battery Type: Lithium-polymer;
Cell Origin: Samsung;
Color: Black;
Warranty: 2 years;
Guarantee: 30 days;
Useful Life: 300-500 charges;