Welcome to OUWEE
Before placing your order, we highly suggest you to open the back case of your latptop and check out the exact part number of your laptop's original battery.

1.Battery Type: Rechargeable Li-ion Battery
2.Model: 71TG4
3.Voltage: 11.4V
4.Capatity: 45Wh 3745mAh
5.Connector: Please refer to the picture and check it.
6.Certificate: CE,RoHS,FCC，100% New from Manufacturer, Grade A Cell
7.Worry-Free Warranty:
At OUWEE, we believe in our battery. That's why we back them all with an 12-month warranty and provide friendly customer service, easy-to-reach support.

8.Replacement for Part Number:
71TG4 071TG4 K5XWW X49C1 0X49C1

9.Compatible Models (use "Ctrl+F to find your model quickly")
Fit for Dell Latitude 5289 2-in-1 Series.
Fit for Dell Latitude 7389 2-in-1 Series.
Fit for Dell Latitude 7390 2-in-1 Series.(NOT fits for Latitude 7390 Series)

Not all models are listed,please check the part number of your original battery.

10.Package included:
1X 71TG4 Battery.

11.For Optimal Use battery:
①Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
②The important point is to perform a full discharge charge every other month to extend battery life.
③Don't connect adapter for a long time while using the battery. It may damage the battery.
④Avoid artificial shocks, disassembly, crush or puncture. Do not dispose of in fire or water.
⑤Avoid using the battery in an environment where the temperature is too high or too low.