Kastar 3-Pack CGA-DU21 Battery and AC Charger Replacement - Reliable

In this review the Kastar 3-Pack CGA-DU21 Battery and AC Wall Charger is evaluated for users who need dependable spare power for older Panasonic camcorders. The clear bottom line: this bundle offers three 7.2V 2900mAh lithium-ion replacements plus a foldable-pin AC charger that restores runtime quickly and packs flat for travel. For anyone running extended shoots with compatible Panasonic PV-GS models, the kit provides immediate, inexpensive redundancy and a convenient LED charger indicator that shows charging status at a glance.

Key Features

• High capacity cells: Each battery is 7.2V with 2900mAh capacity, giving noticeably longer runtime than many original low-capacity spares.
• Compatible models listed: The pack explicitly supports CGA-DU21 and a range of related Panasonic battery and camera model families for straightforward fit.
• Included AC charger: The charger accepts AC 100~240V 50~60Hz and outputs DC 8.4V 600mA so users can charge worldwide with a local adapter.
• LED charge indicator: Red while charging and green for standby or full charge, which makes it easy to know when batteries are ready.
• Travel-friendly design: The charger has a foldable flat pin for compact storage and less bulk in a camera bag.
• Value bundle: Three batteries plus one wall charger in a single purchase reduces the need to hunt for separate compatible parts.

Who It's For

The Kastar kit is best for videographers, hobbyists, and anyone who owns older Panasonic PV-GS series camcorders listed among the compatible models and needs extra runtime without replacing the camera. It is especially useful for event shooters or travel users who prefer carrying multiple ready batteries rather than recharging mid-shoot.

It is not ideal for users who require a car charger or a European plug in the box, as the package includes only the AC wall charger with foldable flat pin and does not include a car adapter or extra international plugs. Buyers who need OEM-labeled batteries for warranty reasons should also consider factory originals.

Pros & Cons

Pros

• Good capacity at 2900mAh gives longer recording time compared with lower-capacity third-party cells.
• The included AC charger supports 100~240V input, so it works on international mains with the right plug adapter.
• LED indicators make it easy to tell when a battery is charging or fully charged.
• Three batteries in one pack reduce downtime between shoots.

Cons

• Package does not include a car adapter or European plug, so additional accessories may be required for some users.
• Not an OEM Panasonic-labeled product, which may matter to buyers seeking original-brand parts.

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
Charger Features	Foldable flat pin; LED red charging / green full
Package Contents	3 batteries + 1 AC wall charger

Our Verdict

The Kastar 3-Pack CGA-DU21 kit is a practical, cost-effective option for owners of compatible Panasonic camcorders who need extra runtime and a compact charger. It pairs high-capacity 2900mAh cells with a worldwide-voltage AC charger and clear LED indicators, making it good value for shooters who want reliable backup power without sourcing multiple parts separately.

Frequently Asked Questions

Are these batteries compatible with Panasonic CGA-DU21 models?
Yes, the pack is listed as compatible with CGA-DU21 and related Panasonic battery and camera models mentioned in the product description.

Does the charger work worldwide?
Yes, the charger accepts AC 100~240V 50~60Hz, but it uses a foldable flat pin so an adapter may be needed for some countries and a car adapter is not included.

How will I know when a battery is fully charged?
The charger shows a red LED while charging and a green LED for standby or full-charge, making status easy to read.