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Rectangular black HP laptop battery with label

HP

HP BB09 QK640UT laptop battery

SKU CH-G3MJ-KV483 MPN QK640UT

An Ultra Extended Life notebook battery that charges while docked or via a built-in AC power port for all-day computing

  • Product typeBattery
  • Key featuresThe HP Extended Life and Ultra Extended Life batteries allow
  • Work longer with HP Ultra Extended Life battery technology
  • Charge while docked without removing the battery
  • Integrated AC Power Port lets you charge the notebook directly
  • Ideal for all-day computing and long meetings
  • New genuine HP BB09 battery, model QK640UT

Extended-life notebook battery

The HP BB09 QK640UT is a new replacement battery built for HP notebooks that need longer run time between charges. It targets mobile professionals who work away from wall outlets for extended periods. The ultra extended life design supports all-day computing or back-to-back meetings without hunting for a socket.

Dock charging and integrated AC port

The extended life variant charges while the notebook sits in a compatible dock so the battery never has to be removed. The ultra extended life version adds a built-in Integrated AC Power Port that accepts the notebook’s own AC adapter directly. Both approaches let you top up the pack without extra cables or a separate charger brick.

Corridor-warrior focus and daily handling

Improved battery life makes this pack a practical choice for users who move between desks, meeting rooms and travel legs. The dock-charge path keeps the notebook seated and connected while the pack refills. The integrated AC port means a single adapter powers the system and recharges the battery when the machine is idle.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $113.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameHP
Model nameBB09 (QK640UT)
Product typeBattery
Size & build
Shipping weight1.36 kg
Package size384 × 198 × 48 mm

Questions about this item

Should I choose the Ultra Extended Life version over the standard Extended Life battery for my notebook?

The Ultra Extended Life model adds an integrated AC power port so you can charge the notebook without removing the battery, while the Extended Life version charges while docked.

How does the Ultra Extended Life design change daily use compared to a regular battery?

You can leave the battery attached and plug the AC adapter directly into the battery's built-in port, keeping the notebook powered without a separate dock.

What does the integrated AC power port on this battery actually do?

It lets you connect the AC adapter to the battery itself, charging the notebook while the battery stays fitted, which is useful when a dock is not available.

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