ZTHY RJ40G Laptop Battery
Merchant Video


Compatible with Laptop models:Press [Ctrl + F] to search for your type
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.Try charging it or use the adapter alone to start. 3.Examine hardware links, like RAM and adapters. 4.Reset BIOS settings if needed. 5.Enter Safe Mode to fix system issues.
How should I do if the battery is not recognised?
If it is not recognised, it is recommended to update the BIOS settings or please disconnecting the old battery, and holding down the power button for 20 seconds, then connect the new battery.
What should I do if the battery expands?
1.Power off your laptop and disconnect it from any power source. 2.Carefully remove the swollen battery from the laptop in a well-ventilated area, avoid pressing or squeezing the battery during removal.
What can you do if you are not satisfied with the battery?
Please Contact ZTHY, we'll help you. Our battery have 12 months replace a new one and 30 days moeny back guarrante.
Please choose the battery that suits your machine

ZTHY TECH
Committed to providing customers with various high-quality batteries, and care services can help you easily solve the problem.
ZTHY RJ40G Laptop Battery
Merchant Video


Compatible with Laptop models:Press [Ctrl + F] to search for your type
| Compatible Part Number | RJ40G 75X16 WY9DX 01K2CF 075X16 0WK3F1 M3KCN 0M3KCN M033W |
|---|---|
| Compatible Model | Replacement for Dell Latitude 14 5420 Series: Dell Latitude 14 5420 CHKFM; Dell Latitude 14 5420 FDTCY; Dell Latitude 14 5420 XPC5H |
| Compatible Model | Replacement for Dell Latitude 15 5520 Series: Dell Latitude 15 5520 39V1H; Dell Latitude 15 5520 FPKNM |
| Compatible Model | Replacement for Dell Precision 15 3560 Series: Dell Precision 15 3560 3H45Y; Dell Precision 15 3560 4MTF7; Dell Precision 15 3560 758J7; Dell Precision 15 3560 7RV10; Dell Precision 15 3560 F3T9T |
| Compatible Model | Replacement for Dell P137G P137G001, Dell P104F P104F001 P104F002 |
| Note | The Dell laptop models on this product page are compatible with 2 battery models: WY9DX (42Wh 3-Cell) , RJ40G(63Wh 4-Cell). Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Please scroll down to the list to purchase. |
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.Try charging it or use the adapter alone to start. 3.Examine hardware links, like RAM and adapters. 4.Reset BIOS settings if needed. 5.Enter Safe Mode to fix system issues.
How should I do if the battery is not recognised?
If it is not recognised, it is recommended to update the BIOS settings or please disconnecting the old battery, and holding down the power button for 20 seconds, then connect the new battery.
What should I do if the battery expands?
1.Power off your laptop and disconnect it from any power source. 2.Carefully remove the swollen battery from the laptop in a well-ventilated area, avoid pressing or squeezing the battery during removal.
What can you do if you are not satisfied with the battery?
Please Contact ZTHY, we'll help you. Our battery have 12 months replace a new one and 30 days moeny back guarrante.
Please choose the battery that suits your machine
![]() WY9DX Battery(click) | ![]() RJ40G Battery(click) | ![]() XVJNP Battery(click) | ![]() GRWKG Battery(click) |
|---|---|---|---|
| Customer Reviews | |||
| — | — | — | — |
| Price | |||
| — | — | — | — |
| Battery Voltage | |||
| 11.4V | 15.2V | 11.4V | 11.4V |
| Battery Capacity | |||
| 42Wh | 63Wh | 53.5Wh | 42Wh |
| Cells | |||
| 3-Cell | 4-Cell | 3-Cell | 3-Cell |
| Compatible Part Number | |||
| WY9DX 1K2CF 75X16 WK3F1 M3KCN | RJ40G 01K2CF 075X16 0WK3F1 | XVJNP 451-BCWQ 6JRCP M0TN3 | GRWKG JTG7N R73TC V7TXF NKXK7 |
| Compatible with | |||
| Dell Latitude 14 5420 | Dell Latitude 14 5420 | Latitude 5430 Rugged Extreme | Dell Latitude 3340 3440 3450 |
| Compatible with | |||
| Latitude 15 5520 | Latitude 15 5520 | Latitude 7330 Rugged Extreme | Precision 3480 3490 3580 3590 |
| Compatible with | |||
| Precision 15 3560 | Precision 15 3560 | Dell P148G P148G001 P149G001 | Dell P169G P170G P170G002 P28F |
| Size (Manual measurement) | |||
| 9.61*3.94*0.2 inch | 8.46*3.94*0.2 inch | 5.12*1.46*0.39 inch | 10.35*3.43*0.2 inch |
| Weight | |||
| 237g | 308g | 279g | 249g |
| Over-Charge Protection | |||
| ? | ? | ? | ? |
| Over-Current Protection | |||
| ? | ? | ? | ? |
| Short-Circuit Protection | |||
| ? | ? | ? | ? |
ZTHY TECH
Committed to providing customers with various high-quality batteries, and care services can help you easily solve the problem.

































