Kastar NP-F750 / NP-F770 Battery 4-Pack Replacement - Long Run Time

Our review of the Kastar NP-F750 / NP-F770 4-pack finds it aimed squarely at content creators who need reliable on-camera power without constant battery swaps. The biggest reason to consider these batteries is the high 5800mAh capacity per cell, which noticeably extends runtime for field monitors such as Neewer models and the Blackmagic Video Assist series. In everyday use the pack reduced interruptions during shoots and offered the built-in protections expected from modern lithium-ion packs, making it a practical replacement when original manufacturer cells run short.

Key Features

• High Capacity: Each 5800mAh battery delivers extended runtime so monitors and recorders run longer between swaps, reducing shoot downtime.
• Compatible Models: Works with a broad range of on-camera field monitors including Neewer F100/F200 and Blackmagic Video Assist 5' and 7' units, making it versatile for mixed rigs.
• Voltage Match: The 7.4V specification ensures proper power delivery to devices designed for NP-F750/NP-F770 format batteries, avoiding voltage mismatch issues.
• Safety Protections: Built-in over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits add peace of mind during extended use.
• Standards Compliant: Cells meet UL1642 and CE safety standards, indicating the pack adheres to recognized safety requirements for lithium-ion batteries.
• Cost Efficiency: Buying a 4-pack reduces per-battery cost and the need to frequently replace lower-capacity cells, saving time and money for regular shooters.

Who It's For

This battery pack suits videographers and photographers who use on-camera monitors or external recorders during long shoots and need dependable, higher-capacity replacements for NP-F750/NP-F770 slots. It is especially useful for run-and-gun shooters or small production crews who prefer to swap batteries less often and keep sessions moving.

Those who should look elsewhere include users requiring manufacturer-branded warranty support tied to original batteries or operators of devices that explicitly require a different voltage or form factor. Also, if you need integrated charging or a dedicated multi-bay charger included, plan to purchase those separately.

Pros & Cons

Pros

• High 5800mAh capacity provides significantly longer run times compared with typical low-capacity replacements.
• Wide compatibility with popular field monitors and recorders makes these batteries flexible for mixed setups.
• Multiple safety protections and UL1642/CE compliance improve user confidence when powering expensive camera gear.

Cons

• Charger and charging accessories are not included, so plan for separate charging solutions.
• As a third-party replacement, some users may prefer original-brand batteries for guaranteed vendor support.

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, cost-effective replacement for creators who need extended runtime on monitors and recorders. With 5800mAh capacity per cell and a full set of safety protections, it delivers dependable performance for field work, though buyers should budget for a charger if they do not already own one.

Frequently Asked Questions

Are these batteries compatible with Blackmagic Video Assist monitors?
Yes, they are listed as compatible with Blackmagic Video Assist 5' and 7' models that accept NP-F750/NP-F770 format batteries.

Do the batteries include built-in protection circuits?
Yes, the pack includes over-charge, over-discharge, over-voltage, over-current and over-heating protection to help safeguard devices.

Does the package include a charger?
No, the package includes four batteries only; a compatible charger must be purchased separately.