Battery for Dell laptops — Lithium‑Ion 68WHr 4‑Cell, compatible with Latitude 5400 / 5500 / 3540

Replacement Lithium‑Ion 68WHr 4‑Cell battery compatible with Dell Latitude 5400, Latitude 5400 Chromebook Enterprise, Latitude 5500 and Precision 3540. This spare battery provides up to 68 watt‑hours of capacity in a compact 4‑cell design with a black housing, intended as a direct replacement to restore portable runtime for business notebooks and mobile workstations. It is designed for users who need to swap a worn battery, complete a repair, or extend unplugged operation time for Dell systems that accept this battery format.

Advantages

The Lithium‑Ion chemistry delivers a balance of energy density and cycle life suitable for everyday laptop use. With 68WHr capacity and a 4‑cell configuration, the battery offers extended runtime compared with lower‑capacity cells while remaining compatible with chassis and power management routines of supported Dell models. The black housing matches original equipment aesthetics and the unit is intended as a spare part that integrates with existing charging and monitoring functions of the laptop.

Suitable for

• Replacing a worn or failing battery in Dell Latitude 5400, 5400 Chromebook Enterprise, 5500 or Precision 3540
• Repair and maintenance tasks for business laptops and mobile workstations
• Extending on‑the‑go runtime for traveling professionals and field use
• Keeping spare battery inventory for IT departments or service centres

Key specifications

• Battery technology: Lithium‑Ion (Li‑Ion)
• Capacity: 68 WHr
• Cell count: 4 cells
• Colour: Black
• Form factor: replaceable internal laptop battery compatible with specified Dell models

How to use

Power down the laptop and disconnect the AC adapter before replacing the battery. Follow the laptop manufacturer's disassembly instructions to access the internal battery compartment or the user‑removable bay, depending on the model. Remove the old battery and install the replacement ensuring proper alignment of connectors and secure fastening. Reconnect the AC adapter and charge the new battery to full before normal use to allow the system to calibrate battery level reporting.

Recommendations

Use the replacement battery only in compatible Dell models listed by the manufacturer. Store unused batteries in a cool, dry place and avoid exposure to high temperatures. To prolong service life, avoid deep discharge cycles where possible and keep the laptop firmware and power management drivers up to date.