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 lithium polymer battery pack with label showing 50Wh 11.55V 4330mAh

Dr. Battery

Dr. Battery 933321-855 laptop battery 50Wh 11.55V 4330mAh for HP EliteBook ZBook

SKU CH-M22W-J9MQV

A 50 Wh lithium-polymer replacement battery rated at 11.55 V and 4330 mAh for compatible HP EliteBook and ZBook models

  • 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
  • 50Wh capacity delivers dependable runtime for mobile professionals
  • OEM-grade Li-polymer cells ensure stable performance and long cycle life
  • Built-in protection safeguards against over-charge, over-discharge, overheating and short-circuit
  • Replaces multiple original HP part numbers including 933321-855

Dr. Battery replacement for EliteBook and ZBook

This Dr. Battery Professional Series unit replaces original HP batteries in EliteBook 735, 745, 830, 836, 840, 846 and ZBook 14u models across G5 and G6 families. It uses lithium polymer cells rated at 11.55V and 4330mAh to deliver 50Wh of capacity. The pack fits business professionals and mobile workstation users who need dependable runtime away from a desk.

Thermals and power in normal use

OEM-grade cells and built-in protection circuits manage charging current and temperature during typical office workloads. The battery maintains stable voltage output without excessive heat while powering productivity applications. Safety features guard against over-charging, over-discharging and short-circuit conditions during daily operation.

Behaviour under sustained load

During extended sessions the lithium polymer chemistry provides consistent energy delivery without rapid voltage sag. Protection logic monitors cell temperature and current to prevent overheating when the system draws maximum power for long periods. The design supports long cycle life for users who regularly deplete and recharge the pack.

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-F
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 do I install the 933321-855 battery and which step do people often miss?

Power off the laptop, remove the bottom case screws, disconnect the old battery cable before lifting it out, then connect the new 11.55V pack and reassemble; the step most people skip is disconnecting the cable first.

What maintenance will the 4330 mAh Li-polymer pack need later?

No scheduled maintenance is required; the battery will eventually hold less charge after many cycles, at which point you replace it with another compatible 50Wh unit.

What limit appears first during sustained heavy workloads on this 11.55V battery?

The pack delivers its rated 50Wh capacity until thermal protection engages; prolonged high current draw can trigger the built-in over-temperature safeguard before the full capacity is used.

More in Laptop Chargers & Batteries

Similar items