Kastar 4-Pack NP-F750 / NP-F770 Battery Charger - Dual Slot USB

In this review of the Kastar 4-Pack NP-F750 / NP-F770 Battery Charger, the bottom line is practical: it is a compact, multi-option charger built for field shooters and videographers who need to keep multiple Sony-type NP-F batteries topped up for Lilliput monitors and similar gear. The reviewer found it especially useful for users who travel light but still use several batteries across a shoot day because it can charge two batteries at once, offers both Micro-USB and Type-C input options, and provides an LED display that clarifies charging status.

Key Features

• Dual charging slots: The unit can charge two NP-F750/NP-F770 batteries simultaneously, saving time during shoots that require back-to-back battery swaps.
• Universal USB input: With both Micro-USB and Type-C input and a supplied Micro USB cable, it accepts common 5V 2-3A power banks and adapters for flexible field charging.
• Intelligent LED display: The LED indicators show charging status and give a quick sense of battery capacity so you can plan swaps instead of guessing remaining runtime.
• Changeable plates: The interchangeable plate design lets you adapt the charger to different battery sizes, making it versatile for NP-F style cells used on several monitor models.
• Low-power, safe output: The charger delivers 8.4V at 800mA per slot, which is appropriate for the Lithium-Ion NP-F750/770 cells and reduces stress compared with higher-current chargers.

Who It's For

This charger is aimed at videographers, camera assistants, and content creators who use Lilliput A7S, A7S-B, H7, H7S, Q7, A11 or A12 monitors and want a dedicated NP-F charger that is portable and USB-powered. It fits well in a small kit bag and pairs with common USB power banks for charging on location.

Those who should look elsewhere include users needing very fast high-current charging or a desktop charger with AC input and built-in wall plug; this unit favors portability and flexible USB power rather than maximum charging speed.

Pros & Cons

Pros

• Compact, travel-friendly design that works with 5V USB power banks and adapters.
• Can charge two NP-F batteries at the same time to keep multiple monitors or spares ready.
• Interchangeable plate and LED indicators add versatility and clear charging feedback.
• Appropriate 8.4V 800mA output for Lithium-Ion NP-F750/770 cells for safe charging.

Cons

• Lower 800mA per slot charging speed means battery top-ups take longer than some high-current chargers.
• Comes with a Micro USB cable only; users who prefer Type-C may need to supply their own cable for that input.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	5800mAh
Output	8.4V 800mA (x1) or 8.4V 800mA (x2)
Input	5V 2-3A (USB Micro-USB or Type-C)
Compatibility	Lilliput A7S, A7S-B, H7, H7S, Q7, A11, A12 monitors

Our Verdict

The Kastar NP-F750/NP-F770 dual USB charger is a sensible choice for camera operators who value portability and the ability to charge two NP-F batteries from common USB power sources. It is good value for those who need reliable, safe charging for Lilliput monitors and other NP-F powered gear, though anyone needing the fastest possible recharge times should consider a higher-current desktop charger instead.

Frequently Asked Questions

Can this charger power two batteries at once?
Yes. It supports charging two NP-F750/NP-F770 batteries simultaneously at 8.4V and up to 800mA per slot.

What input power does it require?
The charger accepts 5V input at 2-3A via Micro-USB or Type-C; a Micro USB cable is included.

Will it work with Lilliput monitors?
Yes. It is specifically compatible with several Lilliput models including A7S, A7S-B, H7, H7S, Q7, A11 and A12.