Kastar 3-Pack NP-F750 NP-F770 Batteries + AC Charger - Long Run Power

In this review the Kastar 3-Pack NP-F750 / NP-F770 Battery and AC Wall Charger replacement is presented for photographers and videographers who rely on FEELWORLD field monitors and similar on-camera displays. The bottom line: this kit is for anyone who needs extended run time and simple charging without carrying multiple OEM batteries, because it pairs three high-capacity 5800mAh lithium-ion batteries with a compact AC wall charger that folds flat for storage. The review focuses on real-world runtime, charging convenience, and compatibility with common FEELWORLD monitor models.

Key Features

• High capacity cells: Each 7.4V 5800mAh lithium-ion battery delivers extended runtime for field monitors so you can shoot longer without frequent swaps.
• Broad compatibility: The pack is designed for NP-F750 / NP-F770 form factor and lists specific FEELWORLD on-camera monitor models, making it easy to match with many small DSLR monitors.
• Compact AC charger: The included wall charger has a foldable flat pin for convenient storage and travel in a camera bag.
• Simple status LEDs: The charger shows red while charging and green when ready, so it is easy to verify charge state at a glance.
• Wide input range: Charger supports AC 100~240V 50/60Hz input, useful for international use with the appropriate plug adapter.

Who It's For

The kit is best for independent videographers, content creators, and small crew operators using FEELWORLD F570, S55, and other NP-F750 / NP-F770 compatible on-camera field monitors who need reliable, higher-capacity replacements to avoid frequent battery changes during shoots. It is also useful as a backup set for photographers who run accessories from the same battery plate.

Those who should look elsewhere include users who require an included car adapter or European plug out of the box, as this package only contains a single AC wall charger with a flat pin and does not include vehicle charging hardware or alternate plug types.

Pros & Cons

Pros

• High 5800mAh capacity per battery provides noticeably longer run times than many stock batteries.
• Kit approach with three batteries plus charger reduces the need to hunt for individual replacements in the field.
• Foldable flat-pin charger is compact and easy to stow in a kit bag.

Cons

• Package does not include a car adapter or alternate plug types, so travelers may need an adapter or separate car charger.

Specifications

Battery type	Lithium-ion
Battery voltage	7.4V
Battery capacity	5800mAh
Charger input	AC 100~240V 50-60Hz
Charger output	DC 8.4V 600mA
Charger indicators	Red charging / Green full or standby
Package contents	3 batteries + 1 AC charger

Our Verdict

The Kastar 3-Pack NP-F750 / NP-F770 battery kit is a practical, cost-effective way to extend field monitor runtime and reduce battery swapping during shoots. It pairs three high-capacity 5800mAh batteries with a compact AC charger that clearly indicates charge state, making it a good value for creators who use compatible FEELWORLD monitors and want dependable spare power on location.

Frequently Asked Questions

Are these batteries compatible with FEELWORLD F570 and S55 monitors?
Yes, the pack is intended for NP-F750 / NP-F770 form factor cells and lists FEELWORLD F570 and S55 among the compatible on-camera field monitors.

Does the charger work internationally?
The charger supports AC 100~240V 50/60Hz input, so it will work internationally with the appropriate plug adapter for local outlets.

Is a car adapter included?
No, the package includes 3 batteries and 1 AC wall charger only; a car adapter or European plug is not included.