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Black rectangular lithium-ion laptop battery with connector strip

KingSener

KingSener SX03XL 45Wh 11.55V laptop battery for HP ProBook x360 435 G7 G8

SKU CH-4R6P-9Q6EA MPN SX03XL

45 Wh 11.55 V lithium-ion replacement battery fits HP ProBook x360 435 G7 and G8 models

  • Battery voltage rating11.55 V
  • Battery capacity45 Wh
  • 45 Wh capacity supports longer unplugged sessions
  • 55 V output matches original HP specifications
  • Replaces 12 OEM part numbers for ProBook x360 435 G7 and G8
  • Li-ion cells deliver stable power without false capacity claims
  • Brand-new replacement battery includes 1-year warranty coverage

Battery for HP ProBook x360 435 G7 G8

The KingSener SX03XL is a new lithium-ion replacement battery built for the HP ProBook x360 435 G7 and G8 series. It delivers 45 Wh at 11.55 V and matches the original dimensions for a direct fit. The pack replaces multiple HP part numbers including L77689-172 and HSTNN-DB9S.

Sustained daily use

High-quality cells and PCB provide stable capacity that meets or exceeds the 45 Wh design rating across full charge cycles. The chemistry supports longer running time between charges without false capacity claims. Proper conditioning — two or three full low-current charge and discharge cycles — helps the pack reach its rated endurance.

Straightforward swap with cautions

Identical size to the factory battery means no adapter brackets or case modifications are required. Verify the original battery model and connector position against product photos before ordering. Avoid continuous AC connection while the battery is installed, keep the pack away from heat and humidity, and store above 80 % charge if removed for more than a month.

How it compares

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

Price $35.99
Pricier than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model nameSX03XL
Part numberSX03XL
SX03045XL
996QA176H
HSTNN-IB9I
HSTNN-DB9S
HSTNN-DB9P
HSTNN-IB9D
L77689-172
L77689-2B1
L77689-171
L78125-005
Power
Battery voltage rating11.55 V
Battery capacity45 Wh

Questions about this item

Does the 11.55 V 45 Wh KingSener SX03XL run hot or draw extra power during all-day use?

The replacement cell matches the original 11.55 V 45 Wh design, so heat and power draw stay within the laptop's normal limits.

Must I already own a specific HP ProBook x360 435 G7 or G8 chassis for the SX03XL to fit?

Yes, the battery is built to the exact dimensions of the original for HP ProBook x360 435 G7 and G8 models.

Will the SX03XL work alongside the original HP charger and motherboard in my 435 G7?

It uses the same voltage and connector as the factory pack, so the existing charger and motherboard recognise it without changes.

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