Battery for Dell laptops 45Wh 4‑cell, compatible replacement (MPN 0HJX7)

Replacement 45Wh 4-cell battery compatible with a range of Dell laptops. This direct-swap unit restores portable power for everyday tasks and is intended as a like-for-like replacement for supported laptop models. The battery delivers nominal 45 watt-hours capacity and is designed to fit into the original battery bay and connect to the laptop's existing power management system without additional adapters.

Advantages

This 45Wh 4-cell battery offers a balance of capacity and compact size to maintain portability while extending runtime. It is manufactured to meet form, fit and function expectations for compatible Dell systems, enabling straightforward installation and predictable performance. The unit supports standard battery charging and reporting features used by Dell power management utilities.

Key specifications

• Rated energy: 45 Wh (nominal)
• Cell count: 4 cells
• Chemistry: lithium-ion battery technology
• Form factor: compact, laptop-compatible removable pack
• Interface: designed to mate with the laptop's original battery connector and charging circuit

How to use

Turn off the laptop and disconnect any power adapter before replacing the battery. Remove the existing battery following the laptop manufacturer's instructions, then align the replacement pack in the battery bay and secure it until it clicks into place. Reconnect the power adapter and allow the battery to charge fully before first use to ensure accurate charge reporting. Use the laptop's operating system power settings or Dell battery utility to verify battery recognition and health information.

Recommendations

Store and operate the battery within the temperature range specified by the laptop manufacturer; avoid exposure to prolonged heat or moisture. For best long-term performance, avoid keeping the battery at full charge or fully discharged for extended periods when not in use. Dispose of the battery according to local regulations for lithium-ion batteries.