63Wh RJ40G Battery compatible with Dell Latitude 14 5420, Latitude 15 5520, Latitude 5520, P104F, P137G, Precision 15 3560, Precision 3560 (RJ40G 63Wh)
It features a 4-cell design providing reliable power for professional workstations and portable devices.
Key facts
- Part type
- Laptop Battery
- Type
- Aftermarket replacement
Compatibility matrix
Only models verified by our team are listed| Parts for | Model | This part |
|---|---|---|
| Dell | Dell P137G | Fits |
| DELL Latitude 5520 | Fits | |
| DELL Precision 3560 | Fits | |
| Dell Latitude 15 5520 | Fits | |
| Dell Latitude 14 5420 | Fits | |
| Dell Precision 15 3560 | Fits | |
| Dell P104F | Fits |
Only the models listed above have a confirmed catalog fit. If yours is absent, compatibility is unknown, not ruled out. Compare the exact model identifier and any published dimensions or connectors before ordering.
Where to find your model number
- Dell: Usually on the rating label under or on the back of the device. Your owner's manual also lists the model number.
General manufacturer guidance: exact label position can vary by model.
Laptop Battery specifications
- Voltage
- 15.2V
- Capacity
- 63Wh
- Chemistry
- Li-Ion / Li-Polymer
- Cells
- 4 Cells
- Part Number
- SK-DEJ40G
Installation guide - Replacing a laptop battery
General guidance for this part type - always follow your device manual- Screwdrivers for your bottom cover (Phillips or Torx)
- Plastic opening pick
- Isopropyl alcohol for glued batteries
- Match the model code and voltage printed on the old battery's label to this listing.
- If the old battery is swollen, do not press, bend or puncture it. Tape over its contacts and take it to a battery recycling point; never put it in household trash.
- 1Check your battery type. If the battery slides out from the outside, push its latches and swap it without opening anything. Otherwise continue below.
- 2Prepare and open. Shut the laptop down fully (not sleep) and unplug the charger. Remove every screw from the bottom cover, including any under rubber feet or labels, then release the clips with a plastic pick starting at a corner near the hinge.
- 3Disconnect the battery first. Unplug the battery connector from the board by pulling the plug body straight out, parallel to the board, never by its wires.
- 4Remove the old battery. Undo the screws that hold it. Some thin laptops glue the cells in place; soften the glue with isopropyl alcohol and lift with a plastic card. Never pry or bend the cells.
- 5Fit and test. Screw the new battery in, connect it, refit the cover and power on with the charger attached. Check that the system reports the battery and charge it to 100% before unplugged use.
This is general guidance for the part type, not a model-specific procedure. If the part does not fit without force, stop and recheck compatibility.
Maintenance check
Signs it's time to replace
- 01Battery drains much faster than it used to
- 02Laptop shuts off suddenly or only runs plugged in
- 03Battery health warning in the system
- 04Swollen battery lifting the case or touchpad (stop using it)
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FP-9C4FCD12 month warranty on every part
Every part we sell is covered for 12 months from delivery. If it fails in normal use, we replace it or refund you , claim it straight from your order page.
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Questions & answers
+Which models does this laptop battery fit?
Our team verified it for Dell P137G, DELL Latitude 5520, DELL Precision 3560, Dell Latitude 15 5520, Dell Latitude 14 5420, Dell Precision 15 3560 and 1 more. The full list is in the compatibility table above.
+How do I make sure it fits my exact model?
Find the model number on your device label and compare it with the table above. Our fit guarantee covers verified models.
+What is the battery capacity?
Listed capacity: 63Wh. A capacity that differs from your original changes run time, not fit.
+What battery chemistry is it?
Listed type: Li-Ion / Li-Polymer. Replace with the same chemistry as your original battery.
+What voltage does it use?
Listed voltage: 15.2V. It must match the voltage of your original part.
+What part numbers does it replace?
Listed reference numbers: SK-DEJ40G. Compare them with the number on your old laptop battery.
+Is it hard to install?
Install difficulty: Advanced · mechanical experience needed. Step by step instructions are on this page.
+How fast will it arrive?
US orders arrive in 7 to 15 business days with free shipping. Other countries are shown at checkout.
+Is there a warranty?
Yes, a 12-month warranty is included, and you can extend it at checkout. Returns are accepted within 30 days.