Kastar NP-F550/F570 4-Pack Battery and LTD2 USB Charger - Reliable

In this review the Kastar 4-Pack NP-F550/F570 Battery and LTD2 USB Charger is evaluated for independent filmmakers and camera operators who need dependable spare power for Z Cam cameras. The bottom line: this kit is for anyone who wants a compact, transportable solution that holds multiple batteries and charges them flexibly via USB. The biggest reason to buy is the combination of decent 2900mAh lithium-ion capacity with a dual charging station that accepts both Micro-USB and Type-C input, making it simple to keep several NP-F series batteries ready on set or while traveling.

Key Features

• Battery Capacity: The 2900mAh lithium-ion cells provide substantial runtime for many mirrorless and cinema workflows, reducing downtime between takes.
• Dual Charging: The LTD2 charger can charge two batteries at the same time, which speeds turnaround when multiple batteries are in rotation.
• Universal Inputs: Multiple charging options with Micro-USB and Type-C inputs mean the charger can use common power banks and phone-style adapters for field charging.
• Swapable Plate: The charger allows the plate to be changed to fit different batteries, offering flexibility for several NP-F variants used across cameras and accessories.
• Smart LED: An intelligent LED display shows charging status and battery capacity so users can see which cells are ready at a glance.
• Low Power Draw: The charger runs from a 5V 2-3A USB supply and outputs 8.4V at 800mA per slot, which is safe and compatible with common USB power sources.

Who It's For

The kit is aimed at content creators, indie filmmakers, and videographers using Z Cam models and other cameras that accept NP-F series batteries; it is particularly useful for those who value portability and the option to charge multiple batteries on location. The combination of 2900mAh batteries and a USB-powered charger makes it a practical backup solution for a day of shooting when access to mains power is limited.

Users who require factory-original batteries with brand warranty or those who need very fast, high-current rapid charging should look elsewhere; this kit is optimized for convenience and compatibility over ultra-rapid charge cycles.

Pros & Cons

Pros

• Good capacity 2900mAh batteries provide extended run time compared with lower-capacity cells.
• Dual-slot LTD2 charger charges two batteries simultaneously, improving workflow efficiency.
• Micro-USB and Type-C inputs add flexibility for field charging from power banks or adapters.
• Smart LED indicators make it easy to monitor charge progress and battery capacity.

Cons

• Charging speed is moderate at 800mA per slot, so replenishing drained batteries takes longer than high-current chargers.
• Included charging cable is Micro-USB only, so a separate Type-C cable may be needed for some users.

Specifications

Battery Type	Lithium-Ion
Voltage	7.4V
Capacity	2900mAh
Charger Input	5V 2-3A (15W)
Charger Output	8.4V 800mA (x1) 800mA (x2)
Inputs	Micro-USB and Type-C (Micro-USB cable included)

Our Verdict

The Kastar 4-Pack NP-F550/F570 kit is a practical, cost-effective option for shooters who need several dependable spare batteries and a portable charger that runs from USB power. It is best for on-location creators and camera operators who prioritize versatility and battery capacity over ultra-fast charging; overall it represents solid value for kit-based workflows that rely on NP-F series cells.

Frequently Asked Questions

Will these batteries work with Z Cam E2 cameras?
Yes, the kit is compatible with NP-F550/F570 formats used by Z Cam E2, E2-M4, E2-S6 and E2-F6 series cameras.

Can the charger run from a power bank?
Yes, the LTD2 charger accepts 5V USB input and can be powered from most power banks that supply 2-3A.

Does the charger charge two batteries at full speed?
It charges two batteries simultaneously but at a moderate 800mA per slot, so full recharges take longer than high-current chargers.