Kastar 4-Pack NP-400 Battery and AC Wall Charger - Reliable Backup

In this review the Kastar 4-Pack NP-400 Battery and AC Wall Charger is presented for photographers who need dependable spare power for legacy Konica Minolta and compatible cameras. The bottom line: this kit is for users who shoot long sessions or travel and want several fully charged spares plus a compact charger; the included AC wall charger with foldable flat pin and an LED indicator makes maintaining power straightforward and predictable. The review examines compatibility, capacity, and everyday usefulness rather than manufacturer claims.

Key Features

• High capacity battery: Each 2400mAh lithium-ion pack offers extended runtime for longer shoots compared with many original batteries.
• Wide voltage compatibility: The 7.4V nominal voltage matches NP-400 and equivalent models so cameras recognize the cells without unusual behavior.
• Universal charger input: The AC charger accepts 100~240V 50~60Hz mains, making it usable on international trips with an adapter.
• Clear charging status: The charger uses a red LED while charging and a green LED when ready, simplifying battery rotation during shoots.
• Compact storage: The charger has a foldable flat pin which reduces bulk in a kit bag and makes it easier to pack.

Who It's For

This pack is best suited to photographers using Konica Minolta Maxxum or Dynax series bodies, Pentax K10/K20 models, Samsung GX cameras, or Sigma DSLRs that list NP-400 or compatible battery references. Wedding shooters, event photographers, and travelers who need several spare batteries will appreciate the four-pack for multi-day use without constant recharging.

Users who rely on the absolute newest camera models or who require in-car charging adapters should look elsewhere, as the package does not include a car adapter or a European plug and is aimed at cameras that accept NP-400 style batteries rather than modern proprietary types.

Pros & Cons

Pros

• Four batteries in one kit give substantial backup power for extended sessions or travel.
• The chargers 100~240V input and foldable flat pin make it convenient for packing and international use with a simple plug adapter.
• Recharge status is easy to monitor thanks to the red and green LED indicators.

Cons

• Package lacks a car adapter or additional plug types, which may require separate purchases for some users.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	2400mAh
Charger Input	AC 100~240V 50~60Hz
Charger Output	DC 8.4V 600mA
Indicator	Red charging / Green full or standby
Package Contents	4 batteries + 1 AC wall charger

Our Verdict

The Kastar 4-Pack NP-400 Battery and AC Wall Charger is a practical, cost-effective solution for photographers using NP-400 compatible cameras who need multiple spares and a compact charger. It provides solid capacity and useful charging indicators, making it good value for those who shoot extended events or travel, though buyers should note the absence of a car adapter or extra plug types.

Frequently Asked Questions

Are these batteries compatible with Konica Minolta NP-400?
Yes, the pack is compatible with NP-400 and lists equivalents such as Pentax D-Li50 and Samsung SLB-1674.

Does the charger work internationally?
The charger accepts 100~240V 50~60Hz input but you may need a local plug adapter for outlets that do not accept the flat pin.

Is there a car charger included?
No, the package does not include a car adapter or a European plug; only the AC wall charger is included.