Laptop battery Dell 35Wh 2-cell lithium-ion 451-BBTJ, compatible replacement for select Dell notebooks

Dell 35Wh 2-cell lithium-ion laptop battery (compatible replacement for select Dell notebooks) provides 35 watt-hours of energy in a compact, two-cell design. It is intended as a direct replacement for compatible notebook models to restore or extend portable runtime. The battery is rechargeable and designed to integrate with the notebook's power management to deliver stable voltage and predictable discharge characteristics during normal laptop operation.

Advantages

This replacement battery offers a balance of capacity and compact size, allowing for extended untethered use without significantly increasing device weight. The 2-cell lithium-ion chemistry ensures consistent power delivery and rechargeability. Designed to function as a drop-in replacement for compatible Dell notebooks, it supports standard charging cycles and typical notebook power-management features.

Suitable for

• Extending mobile runtime for compatible Dell notebooks
• Replacing a worn or failing internal battery
• Temporary unplugged use during travel or meetings
• Home or office use when mains power is unavailable or inconvenient

Key specifications

• Energy capacity: 35 Wh
• Cell count: 2-cell lithium-ion configuration
• Chemistry: Lithium-ion rechargeable
• Form factor: Internal notebook replacement battery designed for compatible Dell models
• Typical use: Provides standard notebook runtime suitable for productivity and multimedia tasks

How to use

Power down the notebook and disconnect the mains adapter before replacing the battery. Remove any access panels or battery latches according to the notebook manufacturer’s instructions, install the replacement unit into the battery bay, and secure it in place. Reconnect power and charge the new battery fully before first use to allow the notebook’s power-management system to register the battery. Follow any on-screen battery calibration prompts provided by the operating system or BIOS.

Recommendations

Use the replacement battery only in supported Dell notebook models and follow manufacturer guidelines for charging and storage. Store the battery in a cool, dry place when not in use, avoid prolonged exposure to high temperatures, and recycle or dispose of the unit in accordance with local battery disposal regulations.