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Battery AVACOM for HP EliteBook 840 G4, 50Wh, Lithium Polymer, Black
The AVACOM NOHP-84G4-P42 replacement battery is compatible with HP EliteBook 840 G4 and several related HP/Compaq models. It is a lithium-polymer (LiPo) power module in black finish, designed to restore or extend the runtime of supported laptops. The battery provides a capacity of 50 Wh and fits the specified EliteBook and ZBook series models.
The battery uses lithium-polymer technology for stable discharge and compact size. With a 50 Wh capacity it delivers extended runtime compared to depleted OEM cells while remaining compatible with original charging and power management systems. The black casing and OEM-style connector allow straightforward, tool-light installation and reliable contact with the laptop.
Power down the laptop, disconnect the AC adapter, and remove the service panel or bottom cover according to the laptop manufacturer’s instructions. Unplug the old battery connector from the motherboard, remove any securing screws, and replace with the AVACOM NOHP-84G4-P42. Reconnect the battery cable, secure the battery in place, reattach the panel, and recharge the laptop fully before first use.
Charge the battery before first use and allow a full charge cycle periodically to help maintain battery calibration. Use the laptop on a stable surface and avoid exposure to high temperatures or moisture. For safety, use the manufacturer’s power adapter and follow standard battery handling precautions.
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