Kastar 3-Pack CGA-DU21 Battery and LTD2 USB Charger - Reliable Power

In this review the Kastar 3-Pack CGA-DU21 Battery and LTD2 USB Charger is evaluated for users who need dependable spare power for older Panasonic camcorders. The kit combines three 7.2V 2900mAh lithium-ion replacement batteries with an intelligent dual USB charger that can top two packs at once, making it most useful for event shooters, travel videographers, and owners of legacy Panasonic models who want a compact, multi-battery solution. The single biggest reason to consider this kit is straightforward: it pairs high-capacity cells with flexible USB charging so you can keep multiple batteries ready without carrying bulky OEM chargers.

Key Features

• High capacity cells: Each 7.2V 2900mAh lithium-ion battery provides extended runtime compared with many stock packs, letting users shoot longer between swaps.
• Dual charging: The LTD2 charger can charge two batteries simultaneously, which speeds turnaround when you need multiple full packs fast.
• Interchangeable plate: The charger plate can be changed to accept different compatible battery shapes, adding practical flexibility.
• USB powered: With Micro-USB and Type-C input options and a supplied Micro USB cable, the charger works from common 5V power sources for travel-friendly recharging.
• Smart LED indicators: Built-in LED status lights display charging progress and approximate battery capacity so users can monitor charge without guessing.

Who It's For

This kit suits photographers and videographers who own Panasonic cameras and camcorders that use CGA-DU21 family batteries and who value carrying spares and a compact charger. It is especially useful for event shooters, documentary makers, and travelers who may not have access to mains power and can use a USB power bank.

Those who should look elsewhere include users who require OEM-branded accessories for warranty reasons, or photographers needing ultra-fast professional chargers that accept AC mains only; this kit emphasizes convenience and portability over extreme charging speed.

Pros & Cons

Pros

• High 2900mAh capacity gives noticeably longer run time per battery compared with many replacements.
• Charger accepts two batteries and can change plates, making it versatile for family of Panasonic cells.
• USB inputs including Type-C and Micro-USB plus a supplied cable make field charging simple from common power sources.
• LED indicators provide clear charge status so users know when packs are ready.

Cons

• The charger draws 5V input and charges at 800mA per slot, so charging two batteries together is not the fastest option available.

Specifications

Our Verdict

The Kastar 3-Pack CGA-DU21 Battery and LTD2 USB Charger is a practical, good-value kit for owners of compatible Panasonic camcorders who need reliable spare power and flexible charging on the go. It is not the fastest two-slot charger for professional rapid turnaround, but its high-capacity batteries, dual charging capability, and USB power options make it a smart choice for travel and event use where portability and convenience matter most.

Frequently Asked Questions

Will these batteries fit my Panasonic camcorder?
They are compatible with CGA-DU06/07/12/14/21 and VW-VBD060/070/120/140/210 and related models listed by Panasonic, so confirm your camera model against that list.

Can I charge two batteries at the same time?
Yes, the LTD2 charger can charge two batteries simultaneously at up to 800mA per slot.

What USB cables are provided and supported?
A Micro-USB cable is included; the charger also supports Type-C input so you can use common USB power supplies or power banks.