CGA-DU21 Battery 4-Pack + AC Charger - Extra Capacity for Panasonic

In this review the focus is on a practical power solution for older Panasonic camcorders: a 4-pack of CGA-DU21 compatible lithium-ion batteries bundled with an AC wall charger. The single biggest reason to consider this kit is its high 2900mAh capacity and included charger, which together extend run time and simplify charging for users who still rely on NV-GS and PV-GS series cameras. This review examines fit, charging behavior, and who will gain the most from replacing aging factory batteries with this multi-pack option.

Key Features

• High capacity battery: The 2900mAh lithium-ion cells provide noticeably longer recording time between swaps compared with older, lower-capacity packs.
• Wide charger input: The charger accepts AC 100~240V 50~60Hz, so it works internationally with the appropriate plug adapter for travel.
• Clear charge status: An LED shows red while charging and green for standby or full-charge, making it easy to tell battery state at a glance.
• Compact charger design: The AC wall charger uses a foldable flat pin for tidy storage and easier packing when not in use.
• Convenient bundle: Including four batteries plus one charger means less downtime during shoots and fewer interruptions for recharging.

Who It's For

This kit is aimed at owners of Panasonic camcorders in the NV-GS and PV-GS families who need multiple standby batteries for longer shoots, travel, or backup power. Wedding videographers, documentary shooters, hobbyists recording extended events, and anyone maintaining legacy Panasonic models listed in the compatibility notes will find the higher 7.2V 2900mAh packs especially useful.

Users who require vehicle charging or bundled international plug adapters should note the package includes only the AC charger with a flat foldable pin and does not include a car adapter or European plug. If you need those accessories, plan to source them separately.

Pros & Cons

Pros

• Four batteries in the pack reduce the need to recharge mid-shoot and extend total available run time.
• The 7.2V 2900mAh lithium-ion chemistry delivers higher capacity than many original factory packs of the same family.
• Charger shows clear LED indicators and supports 100~240V for international use with the right adapter.
• Foldable flat-pin charger stores compactly in a kit bag.

Cons

• The package does not include a car adapter or alternate plug types, so additional accessories may be needed for in-vehicle or some international use.
• Compatibility is specific to many older Panasonic models, so it is not a universal camcorder battery solution.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.2V
Battery Capacity	2900mAh
Charger Input	AC 100~240V 50~60Hz
Charger Output	DC 8.4V 600mA
Charge Indicator	LED red charging, green full/standby
Package Contents	4 batteries and 1 AC wall charger

Our Verdict

For owners of the specified Panasonic NV-GS and PV-GS camcorders, this 4-pack with AC charger is a cost-effective way to restore dependable run time and reduce interruptions during shoots. The 2900mAh cells and straightforward charger deliver practical value, though buyers needing car charging or alternate plug types should budget for extra accessories. Overall, it is a sensible buy for users who need multiple high-capacity spare batteries.

Frequently Asked Questions

Are these batteries compatible with NV-GS80 and PV-GS300?
Yes, the pack is listed as compatible with many Panasonic NV-GS and PV-GS series models including NV-GS80 and PV-GS300.

Does the charger work worldwide?
The charger accepts 100~240V input so it can be used internationally with the correct plug adapter; a car adapter or European plug is not included.

How will I know when batteries are fully charged?
The included charger uses an LED that shows red while charging and green for standby or full-charge to indicate status.