Kastar NP-F770 Battery 2-Pack with LTD2 USB Charger - High Capacity

In this review the Kastar NP-F770 Battery 2-Pack with LTD2 USB Charger is evaluated for field recordists and camera operators who need long runtime and flexible charging. The bottom line is simple: this kit pairs two high-capacity 5800mAh lithium-ion NP-F770 batteries with a compact dual USB charger that can top up both cells at once, making it useful for Sound Devices MixPre recorders and a wide range of camcorders. It is aimed at users who value extended run time and portable, multi-input charging rather than brand-new OEM packaging or ultra-fast recharge cycles.

Key Features

• High Capacity: Each 5800mAh battery provides extended runtime so you can record longer sessions without swapping cells frequently.
• Dual Charging: The LTD2 charger can charge two batteries simultaneously, which reduces downtime between shoots or long recording days.
• Flexible Input: Micro-USB and Type-C charging inputs let you power the charger from common 5V 2-3A sources, including power banks and USB wall adapters.
• Interchangeable Plate: The charger allows changing the plate to support different battery plates, adding versatility for other NP-F series cells.
• Simple Status Display: Intelligent LED indicators show charging status and battery capacity so you can see progress at a glance.

Who It's For

This kit is well suited to indie filmmakers, field recordists using Sound Devices MixPre-3, MixPre-6, MixPre-10T, or Sound Devices 663, and photographers using compatible NP-F series camcorders who need reliable extra runtime without carrying bulky power solutions. The high capacity cells are ideal for long location shoots, time-lapses, and audio recording sessions where changing batteries interrupts workflow.

Those who need manufacturer warranty support specific to a camera brand, the absolute fastest recharge times, or a charger with integrated AC adapter might look elsewhere. Also, users who require single-cell smart charging with advanced battery management at the cell chemistry level should consider purpose-built OEM chargers.

Pros & Cons

Pros

• High 5800mAh capacity per battery extends run time for cameras and recorders.
• Dual charging capability reduces downtime by charging two batteries at once.
• USB inputs and included Micro-USB cable make it easy to charge from common USB power sources.

Cons

• Charger output is modest at 800mA per slot, so recharge times are not the fastest for 5800mAh cells.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	5800mAh
Charger Input	5V 2-3A (15W)
Charger Output	8.4V 800mA x1 or 800mA x2
Charging Ports	Micro-USB and Type-C input; Micro USB cable included

Our Verdict

The Kastar NP-F770 2-Pack with LTD2 USB Charger is a practical, value-led choice for users who need long battery life and convenient USB charging for NP-F series devices. It is especially useful for field audio and video tasks where runtime and the ability to charge two batteries at once matter more than fastest recharge speeds. For most independent creators this kit offers solid performance and portability for the price.

Frequently Asked Questions

Are these batteries compatible with my MixPre recorder?
Yes, the batteries are listed as compatible with Sound Devices MixPre-3, MixPre-6, MixPre-10T and Sound Devices 663.

Can the charger change plates for other NP-F batteries?
Yes, the charger supports swapping the plate to charge different NP-F style batteries.

What inputs does the charger accept?
The LTD2 charger accepts Micro-USB and Type-C input and includes a Micro USB cable; it runs from a 5V 2-3A source.