Kastar 4-Pack CGR-D28 Battery and LTD2 USB Charger Replacement - Long

In this review the Kastar 4-Pack CGR-D28 battery and LTD2 USB charger is evaluated for camcorder users who need reliable spare power. The bottom line is simple: this kit is for videographers and owners of compatible Panasonic camcorders who want multiple full-capacity 7.4V lithium-ion cells and a flexible USB charger that can top up two cells at once. The reviewer found the 3300mAh cells deliver extended run time compared with older batteries, and the LTD2 chargers dual-slot, switchable plate and Micro-USB/Type-C inputs make charging on the go straightforward and dependable.

Key Features

• High capacity cells: Each 3300mAh, 7.4V Lithium-Ion battery offers longer shooting sessions before swapping or recharging is required.
• Dual battery charging: The LTD2 charger can charge two batteries simultaneously, reducing downtime between shoots.
• Interchangeable plate: A changeable charging plate allows the charger to accept different battery contacts, increasing compatibility.
• USB power options: Multiple input options include Micro-USB and Type-C, with the charger accepting 5V 2-3A input for convenient mobile charging.
• Intelligent LED indicators: LED status display shows charging progress and helps estimate remaining battery capacity while charging.
• Portable design: The charger and four spare batteries are compact enough to carry in a kit bag for field work.

Who It's For

This kit suits independent videographers, event shooters, and anyone using Panasonic camcorders that accept CGR-D28 or related battery models who need multiple backups to cover long shoots. The large 3300mAh cells and ability to charge two batteries together make it practical for day-long use without access to mains power.

Those who should look elsewhere include operators of cameras that require proprietary or higher-voltage charging systems, or users who must have factory-branded batteries for warranty reasons. Also, if a single ultra-fast rapid-charge solution is needed, this kit focuses on capacity and flexibility rather than extreme charging speed.

Pros & Cons

Pros

• High 3300mAh capacity extends on-camera runtime compared with older cells.
• Charger supports two batteries at once, cutting total recharge time for multiple cells.
• Micro-USB and Type-C inputs let users charge from common power banks or adapters.
• Interchangeable plate and LED indicators improve compatibility and usability in the field.

Cons

• Charger output is modest at 800mA per slot, so individual batteries take several hours to fully recharge.
• Not a brand-original Panasonic battery, so some users preferring OEM parts may avoid third-party replacements.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	3300mAh
Charger Input	5V 2-3A (USB)
Charger Output	8.4V 800mA (x1) or 800mA (x2)
Charging Options	Micro-USB and Type-C inputs; comes with Micro USB cable
Compatibility	CGR-D28, CGR-D16, CGR-D08 and listed Panasonic camcorder models

Our Verdict

The Kastar 4-Pack CGR-D28 battery and LTD2 USB charger is a practical, cost-effective kit for shooters who need several high-capacity spares and a flexible USB charger. It delivers strong runtime, useful dual charging and field-friendly inputs, making it good value for videographers who prioritize capacity and portability over OEM branding or extremely fast recharge times.

Frequently Asked Questions

Will these batteries fit my Panasonic camcorder?
They are compatible with CGR-D28, CGR-D16, CGR-D08 family batteries and many Panasonic camcorder models listed in the product description; check your cameras accepted battery model before buying.

Can the charger charge two batteries at the same speed?
Yes, the LTD2 charger can charge two batteries simultaneously, with each slot delivering up to 800mA, though charging both together shares available power.

Does the kit include a USB cable?
Yes, a Micro USB cable is included and the charger also accepts Type-C input for wider power source options.