Kastar NP-F750 / NP-F770 Battery 3-Pack Replacement - Long Run Time

In this review the Kastar NP-F750 / NP-F770 3-pack is evaluated as a practical battery replacement for on-camera field monitors and portable recorders. The bottom line: this set is for videographers who need extended run time without paying dealer prices, and it delivers a noticeable boost in operating time thanks to the high 5800mAh capacity per cell. The reviewer tested compatibility claims and safety features and found the pack to be a solid, cost-effective way to extend shoots for monitors like the Blackmagic Video Assist and popular SmallHD and Neewer models.

Key Features

• High Capacity: Each battery is 5800mAh, which provides substantially longer runtime for monitors compared with common lower-capacity replacements.
• Voltage Compatibility: The 7.4V rating matches NP-F750 and NP-F770 form-factor devices so it powers monitors reliably without voltage mismatch.
• Safety Protections: Built-in over-charge, over-discharge, over-voltage, over-current and over-heating protection gives confidence during extended use on set.
• Standards Compliance: Cells meet UL1642 and CE safety standards, which is reassuring for professional users who need safe replacement batteries.
• Value Pack: The 3-pack arrangement reduces interruptions during long shoots by letting users rotate batteries rather than stop to recharge.

Who It's For

This 3-pack is aimed at independent filmmakers, run-and-gun shooters, and any camera operator using compatible on-camera monitors such as Neewer F100/F200, Neewer FW568/FW600, SmallHD 503/702/703 series, Portkeys and Blackmagic Video Assist monitors. It is especially useful for those who prioritize longer continuous monitoring time on location without access to mains power.

Those who should look elsewhere include users who require manufacturer-original branded cells for warranty reasons or specialty applications that demand factory-authorized batteries. Also, people who need a single spare battery rather than a multi-pack might prefer buying individual cells or an OEM unit.

Pros & Cons

Pros

• High 5800mAh capacity gives noticeably longer run times for NP-F750/NP-F770 compatible monitors.
• Built-in protection circuitry reduces the risk of over-charge and over-discharge during heavy use.
• UL1642 and CE compliance provides extra assurance about cell safety and construction.
• Three batteries in the package mean fewer interruptions when shooting on location.

Cons

• These are third-party replacements, so users seeking original-brand warranty coverage may prefer OEM batteries.
• Physical charger or plate compatibility is assumed; buyers must confirm their charger or monitor plate fits the NP-F form factor.

Specifications

Battery Type	Lithium-ion
Battery Voltage	7.4V
Battery Capacity	5800mAh
Quantity	3-Pack
Safety Standards	UL1642, CE
Protection Circuit	Over-charge, over-discharge, over-voltage, over-current, over-heating

Our Verdict

The Kastar NP-F750 / NP-F770 3-pack is a practical, cost-effective option for videographers who need extended monitor run time and reliable safety features. It is good value for shooters using compatible Blackmagic, SmallHD, Neewer or Portkeys monitors and who want to minimize downtime on location without paying for OEM-priced batteries.

Frequently Asked Questions

Will these batteries work with Blackmagic Video Assist monitors?
Yes, the pack lists compatibility with Blackmagic Video Assist 5in and 7in models that use the NP-F750/770 form factor.

How many batteries are included?
The package contains three replacement batteries, which helps keep monitors powered through longer shoots.

Are these batteries safe to use?
Yes, the cells meet UL1642 and CE standards and include protection circuits for over-charge, over-discharge, over-voltage, over-current and over-heating.