Dr. Battery
Dr. Battery 933321-855 laptop battery 50Wh 11.55V 4330mAh for HP EliteBook ZBook
A 50 Wh lithium-polymer replacement battery rated at 11.55 V and 4330 mAh for compatible HP EliteBook and ZBook models
- TypeBattery
- CompatibilityHP EliteBook 735 G5 / EliteBook 735 G6 HP EliteBook 745 G3 /
- Battery TypeLithium Polymer
- Battery Voltage11.55V
- Battery Capacity4330 mAh
- FunctionNotebook
- 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.
Highlights
- 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
Specifications
| Brand | HP |
|---|---|
| Model | HP EliteBook 735 G5 / EliteBook 745 G5 / EliteBook 830 G5 / EliteBook 840 G5 / ZBook 14u G5 |
| Part Number | DR-PRO-LHP355-F |
| Type | Battery |
| Compatibility | HP 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 |
| Battery Type | Lithium Polymer |
| Battery Voltage | 11.55V |
| Battery Capacity | 4330 mAh |
| Function | Notebook |
| Dimension | 8.0x1.5x0.8 |
| Weight | 0.4 |
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.
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