Kastar NP-F550 F570 4-Pack Battery with LTD2 USB Dual Charger

In this review the Kastar 4-Pack NP-F550/F570 battery bundle is judged primarily for users who need dependable spare power for camcorders and LED setups. The kit pairs four 7.4V 2900mAh lithium-ion batteries with an LTD2 USB dual charger that can top two cells simultaneously, and the bottom line is simple: it is a practical, travel-friendly replacement pack that extends run time without requiring proprietary mains chargers. For anyone who uses compatible CCD or DSC camcorders and wants flexible USB charging, this package delivers straightforward extra capacity and convenient charging options.

Key Features

• High capacity cells: Each battery uses a 7.4V 2900mAh lithium-ion cell that provides substantially longer run time than older, lower-capacity replacements.
• Dual charging: The LTD2 USB charger can charge two batteries at once so you can rotate power faster during long shoots or travel days.
• Changeable plate: The charger plate can be swapped to accept different battery plate types, offering greater compatibility with similar NP-F series packs.
• USB convenience: The charger accepts Micro-USB and Type-C input and includes a Micro USB cable so you can charge from portable power banks or USB wall adapters.
• Intelligent LED indicators: LED lights show charging status and give a quick sense of remaining battery capacity to avoid surprises on set.
• Low power input: Charger runs from 5V 2-3A (15W) input with outputs rated at 8.4V 800mA per slot when charging one or two batteries.

Who It's For

Filmmakers, hobbyist videographers and photographers who already own devices that use NP-F550/NP-F570 style batteries will find this kit useful because it supplies multiple spare batteries and a small, USB-powered charger that fits into a camera bag. It is also a sensible choice for travelers who need a compact way to recharge batteries from a power bank or laptop without extra bulky adapters.

Those who need OEM-branded warranty service, extremely rapid professional charging speeds, or batteries for devices outside the NP-F family should look elsewhere. The pack is designed as a practical replacement and spare power solution rather than a high-end studio charging system for multi-camera rigs.

Pros & Cons

Pros

• Four 7.4V 2900mAh batteries provide extended runtime between swaps.
• Charger can charge two batteries simultaneously, saving downtime during shoots.
• USB inputs (Micro-USB and Type-C) add flexibility to charge from many sources, including power banks.
• LED indicators convey charge status clearly so you can manage spares.

Cons

• Charging speed is moderate at 800mA per slot, which is slower than some dedicated mains chargers.
• No Type-C cable included in the box; only a Micro USB cable is provided.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	2900mAh
Charger Input	5V 2-3A (15W)
Charger Output	8.4V 800mA per slot (x1 or x2)
Charger Features	Dual USB input, changeable plate, LED charge indicators

Our Verdict

The Kastar 4-pack with the LTD2 USB dual charger is a practical and cost-effective solution for users who need multiple replacement NP-F550/NP-F570 batteries and flexible USB charging. It is especially good value for travel shooters and hobbyists who prioritize portability and reliable run time over the fastest possible charge rates.

Frequently Asked Questions

Are these batteries compatible with NP-F550 and NP-F570 devices?
Yes. The batteries are designed as compatible replacements for NP-F550 and NP-F570 style devices and list many compatible camera and camcorder models.

Can the charger charge two batteries at the same time?
Yes. The LTD2 USB charger supports simultaneous charging of two batteries and provides 800mA output per slot.

What inputs does the charger accept?
The charger accepts Micro-USB and Type-C inputs and ships with a Micro USB cable for immediate use.