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

In this review the Kastar 4-Pack NP-F550 / NP-F570 batteries with the LTD2 USB dual charger is presented as a practical power kit for videographers who use on-camera field monitors. The bottom line: this bundle gives a lot of runtime for monitors like the AndyCine C5, A6 and similar models and the included LTD2 charger makes it easy to top up two batteries at once from common 5V USB sources. For anyone who needs multiple spare batteries and flexible charging on set, this kit delivers dependable, portable power without extra bulk.

Key Features

• Lithium-Ion 2900mAh: The higher 2900mAh capacity provides extended runtime for field monitors so shoots run longer between swaps.
• 7.4V Output: The native 7.4V voltage matches NP-F550/NP-F570 monitor plates for safe, direct battery use.
• Dual charging: The LTD2 charger can charge two batteries simultaneously, reducing downtime when multiple cells are used on location.
• USB input flexibility: With Micro-USB and Type-C input and a 5V 2-3A input spec, the charger works from common power banks and USB adapters.
• Smart LED indicators: The intelligent LED display shows charging status and relative battery capacity so you can see which cell is ready at a glance.
• Interchangeable plates: The charger plate can be changed to charge different battery plate types, adding versatility for mixed kit environments.

Who It's For

This pack is aimed at independent filmmakers, run-and-gun videographers and small production crews who use 5-7 in field monitors such as the AndyCine C5, A6 series and other compatible monitors. The four batteries give several hours of continuous operation and the dual charger helps keep spares topped up between takes.

It is not intended for users who need manufacturer-original OEM batteries for camera bodies that demand vendor-specific firmware or battery authentication; those users should look for brand-specific power solutions. It is best suited for external monitor power and accessories that accept NP-F550/NP-F570 style cells.

Pros & Cons

Pros

• High 2900mAh capacity offers extended monitor runtime compared with lower-capacity replacements.
• Charger accepts standard 5V USB input and includes a Micro-USB cable for convenient charging from power banks or USB adapters.
• Can charge two batteries at once and shows status with intelligent LED indicators to manage spares efficiently.

Cons

• Charger output is limited to 800mA per bay, so full charging can take several hours compared with higher-current chargers.
• Not a camera body OEM cell; users who require manufacturer-specific batteries should confirm compatibility first.

Specifications

Battery type	Lithium-Ion
Voltage	7.4V
Capacity	2900mAh
Charger input	5V 2-3A (15W) via Micro-USB or Type-C
Charger output	8.4V 800mA x1 or 800mA x2
Charger features	Dual bay, interchangeable plate, intelligent LED indicators

Our Verdict

For users powering on-camera field monitors, this Kastar 4-pack with the LTD2 USB charger is good value: the 2900mAh cells extend run times and the dual USB-powered charger simplifies charging on location. It is a practical kit for indie filmmakers and monitor-heavy rigs who need multiple spares and flexible USB charging.

Frequently Asked Questions

Are these batteries compatible with AndyCine monitors?
Yes, they are compatible with AndyCine C5, A6, A6 Lite and many other NP-F550/NP-F570 plate monitors listed in the product notes.

Can the charger work from a power bank?
Yes; the LTD2 charger accepts 5V input via Micro-USB or Type-C and can run from a power bank that supplies 2-3A.

How long does a full charge take?
Because the charger provides about 800mA per bay, expect several hours to fully charge a 2900mAh cell depending on input current and battery state.