Specifications:
Battery Type: Li-ion
Voltage: 7.6V
Capacity: 68wh

Replace Part Number:
GJKNX GD1JP 0GD1JP

Compatible Laptop/Tablet Models:
Dell Precision 15 3520 Series,
Dell Latitude E5480 E5580 E5490 E5590 Series.

For the new battery , we suggest that all of our customer should full charge it by AC power adapter ,because takes a long period, the capacity was strain out by inner PCB circuit, in order to protect your battery life,you can full charge to 100% and drain to 1% 2 times,then the capacity will recover.