Kastar NP-F750 NP-F770 Battery 4-Pack Replacement for FEELWORLD FW279

In this review the reviewer tested the Kastar NP-F750 / NP-F770 4-pack as a replacement power option for FEELWORLD on-camera field monitors and similar models. The bottom line: this pack is for shooters and video technicians who need extended runtime on location without fuss. It delivers a clear benefit of substantially longer operating time thanks to each cell's high capacity, and the built-in protection circuitry adds peace of mind when swapping batteries into monitors like the FEELWORLD FW279 or FW279S.

Key Features

• High capacity: Each battery offers 5800mAh capacity so the monitor runs longer between swaps, reducing interruptions during shoots.
• Compatible chemistry: Lithium-ion construction with a 7.4V rating matches the power requirements of many FEELWORLD monitors for reliable operation.
• Safety protections: Built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protection lowers the risk of damage during use.
• UL and CE standards: Cells meet UL1642 and CE safety standards so you get a replacement that follows common safety benchmarks.
• Cost effective pack: The 4-pack format saves time and money compared with repeatedly buying single low-capacity replacements when longer runtime matters.

Who It's For

This 4-pack is aimed at videographers, camera assistants, and content creators who use FEELWORLD on-camera and field monitors such as the FW279, FW279S, FW760 and similar models and need extended runtime without frequent battery changes. The pack is especially useful for multi-camera shoots, long run-and-gun shoots, or any scenario where swapping power frequently interrupts workflow.

Those who should look elsewhere include users who require OEM-branded batteries for warranty or certification reasons, or setups that need a different voltage or battery form factor. If you only operate short shoots and rarely need more than one spare cell, a single battery may be sufficient instead of a 4-pack.

Pros & Cons

Pros

• High 5800mAh capacity extends monitor runtime and reduces battery changes on set.
• Comprehensive protection circuit helps prevent over-charge and over-discharge damage.
• Pack of four means multiple spares ready to rotate for long shoots or multiple monitors.
• Meets UL1642 and CE standards for an added level of safety assurance.

Cons

• Not an OEM FEELWORLD battery, so those requiring branded parts for warranty reasons may prefer original manufacturer cells.

Specifications

Battery Type	Lithium-ion
Battery Voltage	7.4V
Battery Capacity	5800mAh
Pack Contents	4-Pack Batteries
Safety Standards	UL1642, CE
Protection Circuit	Over-charge, over-discharge, over-voltage, over-current, over-heating

Our Verdict

The Kastar NP-F750 / NP-F770 4-pack is a practical value choice for anyone who relies on FEELWORLD field monitors and needs extended runtime and safe, repeatable performance. With solid capacity per cell and protective circuitry, it reduces downtime on location and is good value for shooters who need multiple spares without paying OEM premiums.

Frequently Asked Questions

Will these batteries work in FEELWORLD FW279 and FW279S?
Yes, they are listed as compatible replacements for FEELWORLD models including the FW279 and FW279S when the NP-F750 / NP-F770 form factor is supported.

How many batteries come in the package?
The pack includes four batteries, providing multiple spares for extended shoots or several monitors.

Are the batteries safe to use on camera gear?
Yes, the cells meet UL1642 and CE standards and include built-in protection for over-charge, over-discharge, over-voltage, over-current, and over-heating.