Laptop battery Origin BTI 51.3 3-cell 11.58V 4430mAh 51.3Wh compatible with HP models

Origin BTI 51.3 is a rechargeable 3-cell Li‑Ion laptop battery with a nominal voltage of 11.58 V and a rated capacity of 4430 mAh (51.3 Wh). Supplied in a black housing as a single unit, this compatible replacement battery is intended for use in a range of HP notebook models where the original battery is faulty, depleted or needs longer runtime for mobile work and travel. The battery supports standard charging and discharging cycles and is designed to match the physical form factor and power requirements of supported HP devices.

Advantages

The Origin BTI 51.3 battery provides a compact, high-energy density Li‑Ion pack that extends portable runtime without altering device performance. It is supplied as a single replacement cell assembly that integrates with the laptop’s power management system and maintains consistent voltage output across typical operating conditions. The black housing and standard connector are designed to fit into compatible HP notebooks, offering a direct-fit replacement option for users who require a functioning battery quickly.

Suitable for

• Extending on‑the‑go battery life for HP EliteBook 640 G9 and 650 G9 series
• Replacing a depleted or failing battery in HP EliteBook 645 G9 / 645 G10 and 650 G10
• Battery replacement for HP ProBook 440 G10, 445 G9 and 450 G9 / 450 G10 models
• Mobile work, travel, and field use where original battery performance is insufficient

Key specifications

• Chemistry: Lithium‑Ion (Li‑Ion), 3 cells
• Nominal voltage: 11.58 V
• Rated capacity: 4430 mAh (51.3 Wh)
• Colour: Black
• Included items: 1 battery pack

How to use

Power down the laptop and disconnect any external power sources before removing the existing battery. Follow the laptop manufacturer’s service instructions to access the battery compartment, take out the old battery and install the Origin BTI 51.3 pack in the same orientation until the connector seats securely. Reassemble the device, connect the AC adapter and charge the new battery fully before first use to allow the battery management system to calibrate. Observe standard safety precautions when handling Li‑Ion batteries and avoid forcing connectors or contacts.

Usage recommendations

For best results, charge the battery using the laptop’s original AC adapter and keep the device firmware and power management drivers up to date. Store the battery partially charged (around 40–60%) if it will not be used for extended periods, and avoid exposing the battery to temperatures well below or above the manufacturer’s recommended operating range. If you notice swelling, unusual heat, or performance degradation, stop using the battery and replace it following proper disposal procedures.