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Black rectangular laptop battery with connector strip

GreenTechLLC

GreenTechLLC BX03XL 11.58V 56Wh laptop battery

SKU CH-T5RS-8J35A

Replacement 11.58V 56Wh lithium-ion battery for HP EliteBook 830, 835, 840, 845, 860, 865 G11 and Elite x360 830 G11 models

  • ColorBlack
  • TypeBattery
  • CompatibilityHP ELITEBOOK 830 13 INCH G11, 830 G11, 835 13 INCH G11, 835
  • Battery Type3 Cell Lithium-Ion
  • Battery Voltage11.58V
  • Battery Capacity4646mah
  • Direct replacement for HP EliteBook and ZBook G11 models
  • 56 Wh capacity supports extended mobile work sessions
  • 58 V three-cell lithium-ion design matches original voltage
  • Slim 9.9 × 3.25 × 0.25 in profile fits factory battery bay
  • CE FCC RoHS certified for safe daily operation

Replacement battery for HP EliteBook and ZBook G11

The GreenTechLLC BX03XL is a 3‑cell lithium‑ion pack rated at 11.58 V and 56 Wh (4646 mAh). It replaces OEM part numbers including BX03XL, N59787‑005 and HSTNN‑OB3H for EliteBook 830, 835, 840, 845, 860, 865 G11, Elite x360 830 G11 and ZBook Firefly 16 G11 models.

Verify your laptop model

Match the exact EliteBook or ZBook G11 variant — 13‑inch 830/835, 14‑inch 840/845, 16‑inch 860/865 or the x360 830 2‑in‑1 — and confirm the battery label shows one of the listed OEM numbers such as N59787‑002 or 8L6T4AV. The pack measures 9.9 × 3.25 × 0.25 in and weighs 0.7 lb, so ensure the battery bay matches these dimensions.

Sustained discharge delivers stable voltage

Each unit is tested for correct voltage, circuit protection and stable current under continuous load. CE, FCC and RoHS certification confirms safety compliance during extended use. The 3‑cell design maintains consistent output over long sessions rather than only in short bursts.

Highlights

  • Direct replacement for HP EliteBook and ZBook G11 models
  • 56 Wh capacity supports extended mobile work sessions
  • 58 V three-cell lithium-ion design matches original voltage
  • Slim 9.9 × 3.25 × 0.25 in profile fits factory battery bay
  • CE FCC RoHS certified for safe daily operation

Specifications

BrandGreenTech
ModelBX03XL, BX03056XL, BX03056XL-PL, N59787-002, N59787-005, N59733-2D1, N59733-AC1, HSTNN-OB3H, TPN-DB1S, TPN-IB0Y, 8L6T4AV, 8M2V5AV, 8M4V8AV, 8N351AV, 8Q5U5AV, 8R627AV, 8T638AV
Part NumberBX03XL, BX03056XL, BX03056XL-PL, N59787-002, N59787-005, N59733-2D1, N59733-AC1, HSTNN-OB3H, TPN-DB1S, TPN-IB0Y, 8L6T4AV, 8M2V5AV, 8M4V8AV, 8N351AV, 8Q5U5AV, 8R627AV, 8T638AV
ColorBlack
TypeBattery
CompatibilityHP ELITEBOOK 830 13 INCH G11, 830 G11, 835 13 INCH G11, 835 G11, 840 14 INCH G11, 840 G11, 845 14 INCH G11, 845 G11, 860 16 INCH G11, 860 G11, 865 16 INCH G11, 865 G11, HP ELITE X360 830 13 INCH G11 2-IN-1, X360 830 G11 2-IN-1, HP ZBOOK FIREFLY 16 G11
Battery Type3 Cell Lithium-Ion
Battery Voltage11.58V
Battery Capacity4646mah
Dimension9.9 X 3.25 X 0.25"
Weight0.7LB

Questions about this item

Does the BX03XL come with installation tools or do I need to buy a screwdriver separately?

The battery ships as a standalone 3 cell lithium-ion unit; no tools or mounting hardware are included, so a small Phillips screwdriver must be sourced separately.

Which part number should I match — BX03XL, N59787-005 or HSTNN-OB3H — for my EliteBook 840 G11?

All three numbers reference the same 11.58V 56.04Wh replacement; any of them will fit the EliteBook 840 G11 listed in the compatibility table.

What does the 56Wh rating actually deliver in an EliteBook 860 16 inch G11?

The 56.04Wh capacity at 11.58V provides the same energy reserve as the original factory pack, giving comparable run-time per charge in the 16 inch G11 chassis.

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