This guide walks you through removing and installing the internal battery on the Dell Inspiron 15-5579 2-in-1. Follow the steps carefully to avoid damage.
Battery specifications
| Type | 3-cell “smart” lithium-ion (42 WHr) |
|---|---|
| Voltage | 11.40 VDC |
| Dimensions | Height: 5.90 mm (0.23 in) | Width: 97.15 mm (3.82 in) | Depth: 184.15 mm (7.25 in) |
| Weight (max) | 0.20 kg (0.44 lb) |
| Operating time | Varies with usage and may reduce under power-intensive conditions. |
| Life span (approx.) | ~500 charge/discharge cycles |
| Temperature range |
Operating: 0°C to 35°C (32°F to 95°F) Storage: –40°C to 65°C (–40°F to 149°F) |
Tools & safety
- Small Phillips screwdriver
- Plastic scribe / spudger (non-metal)
- Anti-static precautions recommended (e.g., ESD strap)
Important: Power off the laptop, unplug the AC adapter, and disconnect all peripherals before you begin.
Remove the base cover
- Close the display and turn the computer over.
- Remove the ten screws (M2.5×7) that secure the base cover to the palm rest and keyboard assembly.
- Using a plastic scribe, gently pry the base cover off the palm rest and keyboard assembly and lift it away.
Remove the battery
- Disconnect the battery cable from the system board by pulling the connector straight out.
- Press and hold the power button for 5 seconds to discharge residual power (with the battery still disconnected).
- Remove the two screws (M2×3) securing the battery to the palm rest and keyboard assembly.
- Lift the battery (with its cable) out of the chassis.
Install the battery
- Place the new battery into position, aligning it with the mounting holes.
- Reinstall and tighten the two M2×3 screws to secure the battery.
- Reconnect the battery cable to the system board; make sure it is fully seated.
- Align the base cover and press along the edges to snap it into place.
- Reinstall the ten M2.5×7 screws to secure the base cover.
Post-install checks
- Reconnect the AC adapter and power on the laptop.
- Verify the battery is detected and charging (Windows battery icon or BIOS “Battery Information” screen).
- If needed, let the battery charge to 100% and then update any Dell power/battery firmware via Dell Support.
- Recycle the old battery responsibly according to local regulations.