ZTHY 51Wh 11.4V R8D7N Laptop Battery for Dell Latitude 5400 5410 5500 5510 E5500 Dell Precision 3540 3550 Inspiron 7590 7591 7791 2-in-1 Series Notebook 1V1XF 4GVMP H82T6 C5GV2 X77XY RF7WM 9JRYT 3Cell

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3) 30-days after purchase, we offer a no-questions-asked return policy.
4)12 months from the date of purchase, If the product fails, we will replace it with a new one.
1) You need to turn off your laptop and disconnect the power.
2) Disconnect the connection between the old battery and the motherboard to avoid unnecessary damage caused by disassembling the battery. Then unscrew the old battery screws one by one and carefully save each screw.
3) Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery.
4) If you don't understand the above steps, you can search for the video about laptop battery installation on YouTube. Maybe it will help you.
1)Discharge the new battery use to 10%(not to 0%) and then charge to 95%, and cycle 3-4 times.
2) Do not disassemble, crush or puncture. Do not dispose of in fire or water.
3) If you remove the battery for a long time, charge more than 80% at least one time within one month.
4) Don't connect the adapter for a long time while using the battery. It may damage the battery.
5)When using the battery, care should be taken to prevent exposure and moisture.
1) Could be caused by battery loss. Please re-install the battery and make sure that the battery cable and the motherboard interface are tightly inserted.
2) Maybe due to conductive material damage which the laptop motherboard and battery anode and cathode contact position, you can try to confirm it with your original battery.
3) Check whether the battery drive is in normal condition, if not, download the corresponding driver software to update.
1.Turn off the laptop.
2.Unplug AC power.
3.Remove the battery.
4.Replace AC power.
5.Turn on laptop,allow OS to boot.
6.Once logged in to the machine,perform a normal shut donw.
7.Unplug AC power.
8.Replace battery.
1, Change your laptop power plan settings, and choose the power saver plan. Then Change advanced power settings, and scroll down to find Processor power management. Click the On-battery option and reduce the processor state to 20%.
2, Always keep your laptop neat and clean. The dust easily enters the hardware through the vents which are meant to release the heat generated from various computer components.
3, Close Wi-Fi, Bluetooth, and other settings. This can help your computer save precious battery life.
Compatible Part NumberR8D7N H82T6 0C5GV2 0W8GMW 1V1XF 4GVMP P84F001 C5GV2 P84F P42E P98G001Compatible ModelReplacement for Dell Latitude 5400 E5400 SeriesCompatible ModelDell Latitude 5500 E5500 SeriesCompatible ModelDell Precision 3540 M3540 SeriesCompatible ModelDell Inspiron 7590 2-in-1 (without 2.5" HDD) Series. (NOT fit for Inspiron 7590 Series.)Compatible ModelDell Inspiron 7591 2-in-1 Series. (NOT fit for Inspiron 7591 Series.)Compatible ModelDell Inspiron 7791 2-in-1 Series. (NOT fit for Inspiron 7791 Series.)Important NoteThere are 3 types' compatible batteries: 4GVMP(68Wh 4Cell),1V1XF(42Wh 3Cell), R8D7N(51Wh 3Cell), Please choose the RIGHT battery model and capacity according to your laptop's original battery.NOTENot all the compatible laptop models have been listed, please open the back case of your laptop and choose the right battery model according to your laptop's original battery. What do I need to be aware of when I receive a battery?
You need to check its appearance, confirm the model, read the instruction manual. Cycle and charge it 5 to 6 times to activate the maximum usage space of the battery. When not in use temporarily, charge the battery to 50%-60%.
What should I do if laptop won't boot up after installing a new battery?
1.Check if the battery is properly seated and connections are clean. 2.T