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Rectangular black lithium-polymer laptop battery pack 8.0x1.5x0.8

Dr. Battery

Dr. Battery DR-PRO-LHP355-E laptop battery 11.55V 4330mAh

SKU CH-K41W-RKKTT

Replacement lithium-polymer battery restores reliable power to compatible HP EliteBook and ZBook laptops with 11.55V 4330mAh capacity

  • Battery typeLithium Polymer
  • Battery voltage rating11.55 V
  • Battery capacity4,330 mAh
  • Main functionNotebook
  • Measurements8.0 × 1.5 × 0.8
  • Product typeBattery
  • Restores reliable power for HP EliteBook and ZBook laptops
  • OEM-grade Li-polymer cells deliver stable performance and long cycle life
  • Built-in protection against over-charging, over-discharging, overheating, and short-circuit
  • 55 V, 4330 mAh capacity matches original 50 Wh specification
  • Compatible with multiple EliteBook 735, 745, 830, 836, 840, 846 and ZBook 14u models

Professional Li-polymer replacement

This Dr. Battery Professional Series unit is a new lithium-polymer replacement for HP EliteBook and ZBook laptops. It targets business professionals and mobile workstation users who need dependable runtime for everyday office and on-the-go use. The battery restores original power characteristics without modification.

Drop-in fit for listed EliteBook and ZBook models

The pack matches the form factor of original HP batteries and connects directly to the existing compartment. No additional cables, brackets or firmware updates are required for installation. It frees the user from relying on AC power during travel or meetings.

Stable output under continuous load

OEM-grade cells deliver steady voltage during extended work sessions rather than only in short bursts. Built-in protection guards against over-charging, over-discharging, overheating and short-circuit conditions. The design supports long cycle life for daily professional use.

How it compares

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

Price $44.99
Pricier than about 77% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameHP
Model nameHP EliteBook 735 G5 / EliteBook 745 G5 / EliteBook 830 G5 / EliteBook 840 G5 / ZBook 14u G5
Part numberDR-PRO-LHP355-E
Product typeBattery
Power
Battery typeLithium Polymer
Battery voltage rating11.55 V
Battery capacity4,330 mAh
Size & build
Measurements8.0 × 1.5 × 0.8
Compatibility
Compatible withHP EliteBook 735 G5 / EliteBook 735 G6
HP EliteBook 745 G3 / EliteBook 745 G5 / EliteBook 745 G6
HP EliteBook 830 G5 / EliteBook 830 G6
HP EliteBook 836 G5
HP EliteBook 840 G5 / EliteBook 840 G6
HP EliteBook 846 G5 / EliteBook 846 G6
HP ZBook 14u G5 / ZBook 14u G6
More details
Main functionNotebook

Questions about this item

How long will the 4330 mAh capacity last under continuous load before the voltage drops below 11.55V?

The 4330 mAh lithium-polymer pack is rated at 11.55V and 50Wh; runtime varies with workload, screen brightness and power-profile settings, so exact hours under sustained load are not fixed.

Does the battery run hot or make noise during all-day use?

As a sealed lithium-polymer module with no moving parts, it generates no audible noise; operating temperature stays within normal laptop thermal limits thanks to built-in over-heat protection.

What must I already own for this DR-PRO-LHP355-E to work in my laptop?

You need a compatible HP EliteBook or ZBook model listed — such as EliteBook 830 G5, 840 G5, 836 G5, 735 G5, 745 G5 or ZBook 14u G5 — and the original battery must use one of the matching HP part numbers like 933321-855 or SS03XL.

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