54Wh 11.4V DR02P Laptop Battery Replacement for Dell Latitude 5440 5450 5540 5550 Precision 3480 3490 3580 3590 Series 803W6 0803W6 2X1V9 02X1V9

Please open your laptop case, check and confirm your original battery model and appearance, compared with our battery image, make sure that's what you need. Especially the location of the connector and the cable length (long or short).
Models: DR02P
Voltage: 11.4V
Capacity: 54Wh
Battery Type: Li-ion
Battery Condition: Brand New
Compatible Part Number: DR02P R73TC GTG7N 803W6 0803W6 2X1V9 02X1V9
Dell Latitude 5440 Series;
Dell Latitude 5450 Series;
Dell Latitude 5540 Series;
Dell Latitude 5550 Series;
Dell Precision 3480 Series;
Dell Precision 3490 Series;
Dell Precision 3580 Series;
Dell Precision 3590 Series

When you get the new battery, discharge the battery to 5% (not 0%), then charge to 95%, cycle 3-4 times to wake up the new battery.
The important point is to perform a full discharge and charge every other month to extend the battery life.
Do not connect adapter for a long time while using the battery. It may damage the battery.
Avoid artificial shocks, disassembly, crush or puncture. Do not dispose of it in fire or water.

Brand new from manufacturer. Tested with strict quality control standards
up to 600 rechargeable recycles
Grade A cells ensure High capacity and smart chip ensure low power consumption
CE / FCC / RoHS certified for safety and stability
Could be caused by battery loose. Please remove the battery and try to install more than once.
May be due to conductive material damaged which the laptop motherboard and battery anode and cathode contact position, you can try to confirm it with your original battery.
Check whether the battery drive is in normal condition, if not, download the corresponding driver software to update.
Take out the battery and press the power button for about 15 seconds to consume the internal residual power (Do not connect the power cord), and then reinstall the battery. You can try several times.

Please read before purchasing Battery Specification: Replacement for Battery Maintenance Methods for Optimal Use Why should l choose SUNNEAR battery? Troubleshooting Methods