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Rectangular black lithium-polymer laptop battery with three cells

FOCUSTEC

FOCUSTEC BK03XL 11.55V 41.7Wh 3-cell laptop battery

SKU CH-4W2B-6PM6S

Lithium-polymer 11.55 V 41.7 Wh 3-cell replacement battery for HP Pavilion x360 14-ba and 14m-ba series, includes screwdrivers

  • Battery TypeLithium-Ion
  • 7 Wh capacity powers long sessions
  • Lithium-polymer chemistry keeps weight low
  • 3-cell 11.55 V design matches original spec
  • Built-in protection guards against overcharge and short circuits
  • Free screwdrivers included for quick self-installation

HP Pavilion x360 14-ba replacement

The BK03XL is a new lithium-polymer battery rated at 11.55V and 41.7Wh across three cells. It matches part numbers BK03041XL, 916366-421, 916366-541, 916811-855, 916812-855, HSTNN-LB7S, HSTNN-UB7G and TPN-W125. The unit fits HP Pavilion x360 14-ba0xx, 14-ba1xx, 14-ba2xx, 14m-ba0xx and 14m-ba1xx convertibles. It is not for owners of other HP series or non-HP laptops.

Included screwdrivers for installation

The package supplies one battery and a set of screwdrivers so the swap can be done without sourcing tools separately. No software, cables or adapters are bundled. The screwdrivers cover the typical case screws on the supported models. Buyers who need a charging cable or external dock must purchase those separately.

Built-in protection circuits and 500-cycle rating

Overcharge, overdischarge, over-temperature and short-circuit safeguards are integrated into the pack. The manufacturer rates the cell chemistry for up to 500 recharge cycles. The black casing aligns with the original chassis colour. Connectors match the motherboard header on the listed 14-ba and 14m-ba units, so no adapter wiring is required.

Highlights

  • 7 Wh capacity powers long sessions
  • Lithium-polymer chemistry keeps weight low
  • 3-cell 11.55 V design matches original spec
  • Built-in protection guards against overcharge and short circuits
  • Free screwdrivers included for quick self-installation

Specifications

Battery TypeLithium-Ion

Questions about this item

How many recharge cycles can the BK03XL lithium-polymer battery deliver before it needs replacing?

The manufacturer rates the BK03XL for up to 500 recharge cycles over its service life.

What is the first limit reached when the BK03XL runs continuously at full load?

The 41.7 Wh capacity sets the runtime ceiling before the pack must be recharged.

Does the BK03XL generate noticeable heat or fan noise during all-day operation?

The battery itself is silent and produces only normal warmth; built-in over-temperature protection prevents excessive heat.

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