Use batteries only at room temperature. Exposure to direct sunlight or dust can damage electronic components, while a return from cold temperature to normal temperature will lead to condensation within the battery.
DELL HCJWT battery feature:
Battery Type: Li-ion
Voltage: 10.8V or 11.1V or 14.8V
Capacity: 60Wh / 6Cell
Property: Dell Original Battery
Color: Dark Grey or Black
Compatible original Battery Code:
312-1163 312-1242 HCJWT
M5Y0X NHXVW PRRRF
T54F3 T54FJ X57F1
DELL Latitude E5420 Series(All) DELL Latitude E5520 Series(All) DELL Latitude E6420 Series(All)
DELL Latitude E6420 ATG Series(All) DELL Latitude E6520 Series(All)
Remove the AC adapter once it registers a dependable green color. this will indicate your battery is fully charged. You might also keep track of the standing of the charging battery from your battery indicator light just above the keyboard on the perfect part of the computer.