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Black rectangular laptop battery with connector pins

Beisite

Beisite ON03XL laptop battery 41.5Wh 11.55V for HP Pavilion X360 13-U 14-ax040wm

SKU CH-VYZM-9F2BJ

A new 11.55V 41.5Wh lithium-ion replacement battery for HP Pavilion X360 13-U and Stream 14-ax000 series laptops

  • Battery typeLithium-Ion
  • Battery voltage rating11.55 V
  • Battery capacity41.5 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor Pavilion X360 13-U 14-ax040wm
  • 5Wh capacity powers extended sessions on compatible HP models
  • 55V lithium-ion chemistry matches original voltage for stable operation
  • Replaces ON03XL, BI03XL, HSTNN-LB7P, HSTNN-UB6W and TPN-W118 part numbers
  • Fits Pavilion X360 13-u and m3-u series plus Stream 14-ax000 models
  • Brand-new condition with twelve-month warranty included

HP Pavilion X360 13-U replacement battery

This lithium-ion cell replaces the original ON03XL pack in HP Pavilion X360 13-U and Stream 14-ax series laptops. It delivers 41.5 Wh at 11.55 V and matches the black finish of the factory unit. The part suits owners whose battery no longer holds a useful charge. Buyers needing a higher-capacity alternative should look elsewhere.

Straightforward internal swap

The battery sits under the bottom cover and connects through the standard internal cable. Removal usually requires a small Phillips screwdriver and a plastic pry tool to release the clips. Common issues include stripped case screws or a connector that resists gentle pressure. Forcing the plug can damage the motherboard header, so patience is advised.

41.5 Wh capacity at 11.55 V

This single figure determines whether the pack will fit the power budget of the listed models. The energy rating matches the original specification for the Pavilion X360 13-u and Stream 14-ax families. Systems expecting a different watt-hour or voltage rating will not operate correctly with this unit.

How it compares

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

Price $33.99
Pricier than about 60% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameON03XL
Model nameON03XL
Part numberHSTNN-LB7P, HSTNN-UB6 W
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.55 V
Battery capacity41.5 Wh
Compatibility
Compatible withFor Pavilion X360 13-U 14-ax040wm

Questions about this item

How do I confirm the 11.55V 41.5Wh battery is working after installing it in my Pavilion X360 13-U?

Power on the laptop and verify the operating system detects the new battery at 11.55V and 41.5Wh, then run a full charge cycle to confirm normal charging and runtime.

What comes in the box and do I need any extra tools or cables to fit this battery?

The package includes 1xbattery only; no tools, screws or cables are supplied, so have a suitable screwdriver ready for the laptop's bottom case.

Which part number should I match — ON03XL, HSTNN-LB7P or 843537-541 — to be sure it fits my 14-ax040wm?

All three numbers refer to the same replacement; match any one of ON03XL, HSTNN-LB7P or 843537-541 to your original battery label for the 14-ax040wm.

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