Kastar 2-Pack NP-QM71D Battery and LTD2 USB Charger - Dual Charge Kit

Our review of the Kastar 2-Pack NP-QM71D Battery and LTD2 USB Charger finds it best suited for photographers and videographers who need reliable, higher-capacity replacement power for older Sony camcorders. The single biggest reason to buy is the combined capacity and flexible charging: two 3600mAh 7.4V lithium-ion batteries plus a dual-slot USB charger that accepts both Micro-USB and Type-C inputs, which lets users charge two batteries at once from common USB power sources. For anyone shooting extended events or working away from AC outlets, this combo replaces multiple short swaps and simplifies keeping spares topped up.

Key Features

• High capacity batteries: The 3600mAh 7.4V lithium-ion cells provide longer run time than many original batteries, reducing the frequency of swaps during shoots.
• Dual battery charging: The LTD2 charger can charge two batteries at once, so users can replenish both spares between takes without waiting one at a time.
• Interchangeable plate design: Change the charging plate to match different battery shapes, offering flexibility when working with multiple Sony battery models.
• USB powered convenience: Micro-USB and Type-C inputs with a 5V 2-3A 15W input rating make it easy to charge from power banks or laptop USB ports while on location.
• Intelligent LED indicators: The charger shows charging status and relative battery capacity so users know when a battery is ready without guessing.
• Broad model compatibility: Specifically compatible with many Sony NP-FM and NP-QM series batteries and a range of older Sony camcorder models, making it a practical replacement set.

Who It's For

The kit is aimed at owners of older Sony camcorders and cameras that use NP-FM and NP-QM series batteries who need extra capacity and the ability to charge two batteries simultaneously. It is especially useful for event shooters, hobbyist videographers, and anyone who works in locations without reliable AC power and wants to use a power bank or USB charger instead.

Those who should look elsewhere include users of modern Sony mirrorless cameras that require different proprietary batteries, or buyers who need manufacturer-branded batteries and warranty coverage tied to original accessories. Also, if you require official OEM chargers and single-battery fast charging beyond what a USB input can provide, consider a different option.

Pros & Cons

Pros

• Higher 3600mAh capacity extends shooting time between swaps.
• Dual-slot charging saves time by charging two batteries simultaneously.
• USB input options and included Micro-USB cable add convenience for field charging.
• LED indicators provide clear charge status and remaining capacity hints.

Cons

• Not an OEM Sony product, so buyers expecting factory-branded accessories may prefer originals.
• Charging rate is limited by USB input and charger output, so charging is not as fast as some dedicated high-power AC chargers.

Specifications

Our Verdict

The Kastar 2-Pack NP-QM71D Battery and LTD2 USB Charger is a practical, value-oriented replacement kit for users of compatible Sony camcorders who need more runtime and field charging flexibility. With high-capacity 3600mAh batteries, dual charging and USB power options, it delivers dependable extended use for events and travel without adding much bulk, making it a sensible buy for budget-conscious shooters who value convenience over OEM branding.

Frequently Asked Questions

Will these batteries fit my older Sony camcorder?
They are compatible with many NP-FM and NP-QM Sony models such as NP-FM71 and NP-QM71D; use the product compatibility list to confirm your exact model.

Can I charge both batteries at the same time from a power bank?
Yes, the LTD2 charger supports simultaneous charging of two batteries via Micro-USB or Type-C input from a suitable 5V 2-3A power source.

Is a USB cable included?
A Micro-USB cable is included, and the charger also accepts Type-C input for broader charging options.