We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black laptop battery with three cells and screwdrivers

Junchi

Junchi BK03XL 11.55V 41.7Wh 3-cell laptop battery

SKU CH-7HZE-S6BE4

Replacement lithium-polymer battery delivering 11.55 V and 41.7 Wh for HP Pavilion x360 14-ba series convertibles, with built-in circuit protection and up to 500 recharge cycles

  • Battery TypeLithium-Ion
  • Replaces original HP battery with exact 11.55V 41.7Wh specification
  • Lithium-polymer chemistry delivers reliable power for daily use
  • Built-in overcharge, overdischarge, over-temperature and short-circuit protection
  • Up to 500 recharge cycles extend service life
  • Includes free screwdrivers for straightforward self-installation

Junchi BK03XL replacement battery

The Junchi BK03XL is a new lithium-polymer battery built for HP Pavilion x360 convertible laptops in the 14-ba and 14m-ba series. It delivers 11.55V and 41.7Wh across three cells and ships with screwdrivers for straightforward installation.

Matching the 11.55V 41.7Wh specification

The single specification that decides fit is the 11.55V 41.7Wh rating. This battery replaces part numbers BK03XL, BK03041XL, 916366-421, 916366-541, 916811-855, 916812-855, HSTNN-LB7S, HSTNN-UB7G and TPN-W125. It is not for machines that require a different voltage or watt-hour value.

Thermal and power behaviour

Built-in protection guards against overcharge, overdischarge, over-temperature and short-circuit events. The pack is rated for up to 500 recharge cycles. Normal use stays within the cell operating envelope without generating excess heat or audible noise.

Highlights

  • Replaces original HP battery with exact 11.55V 41.7Wh specification
  • Lithium-polymer chemistry delivers reliable power for daily use
  • Built-in overcharge, overdischarge, over-temperature and short-circuit protection
  • Up to 500 recharge cycles extend service life
  • Includes free screwdrivers for straightforward self-installation

Specifications

Battery TypeLithium-Ion

Questions about this item

How long will the 41.7Wh capacity last in daily use on my HP Pavilion x360?

The 41.7Wh rating typically delivers several hours of mixed workloads on compatible 14-ba and 14m-ba series models; actual runtime depends on screen brightness, applications and power settings.

Does the 11.55V lithium-polymer pack use a standard connector that fits my laptop without modification?

Yes, it matches the original BK03XL, 916811-855 and HSTNN-LB7S part numbers, so the connector aligns with the motherboard socket on listed Pavilion x360 models.

What physical space and fixings are required to install this 3-cell battery?

It occupies the same internal bay as the factory pack and includes screwdrivers; the black 3-cell unit secures with the existing screws on 14-ba0xx, 14-ba1xx and 14-ba2xx chassis.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.