Kastar 4-Pack Battery and AC Wall Charger Replacement for Sony a99II

In this review the Kastar 4-Pack Battery and AC Wall Charger replacement is evaluated for photographers who need dependable spare power for Sony Alpha cameras. The review finds this kit best for shooters who want a simple, affordable way to keep a Sony NP-FM500H powered without relying on the original brand battery or charger; the single biggest reason to buy is the combination of four 2400mAh lithium-ion batteries and a compact AC charger that covers multi-voltage input for travel convenience. Overall it is a practical backup pack rather than a luxury upgrade.

Key Features

• High capacity cells: Each 2400mAh lithium-ion battery provides sustained runtime for extended shooting sessions so you can finish longer shoots without swapping frequently.
• Correct voltage: The batteries deliver the specified 7.4V required by compatible Sony models, ensuring safe operation with gear that uses NP-FM500H type batteries.
• Included AC wall charger: The compact charger accepts AC 100~240V 50~60Hz input so it can be used abroad with the appropriate plug adapter and charges at DC 8.4V 600mA.
• Foldable flat pin: The charger's foldable flat pin design reduces bulk in a camera bag and makes storage neater between uses.
• Charge indicator lights: The LED shows red while charging and green when the battery is on standby or fully charged, making it simple to monitor charging status.
• Value pack: The package includes four batteries plus one AC charger, which is convenient for photographers who need multiple spares for day-long shoots.

Who It's For

This kit is aimed at hobbyists, event shooters, and travel photographers who use Sony models compatible with NP-FM500H batteries and need several reliable spares without spending on OEM options. The pack is especially useful for those who prefer carrying multiple batteries rather than relying on USB-charging solutions.

Those who should look elsewhere include shooters who need a car adapter or European plug included in the kit, since the package does not include those accessories, and professionals requiring the fastest possible recharge rates, as the charger outputs 600mA which is modest compared with some rapid chargers.

Pros & Cons

Pros

• Four 2400mAh batteries give ample extra runtime for full-day use or overnight shoots.
• Charger supports 100~240V input so it is usable internationally with a plug adapter.
• LED status lights make it easy to tell when a battery is fully charged.
• Foldable pin on the AC charger improves portability and storage.

Cons

• Package does not include a car adapter or European plug, so additional accessories may be required for some users.
• The charger output of DC 8.4V 600mA is adequate but not a fast-charge solution for multiple batteries in rotation.

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
LED Indicator	Red charging / Green full or standby
Package Contents	4-Pack Batteries + 1 AC charger

Our Verdict

The Kastar 4-Pack Battery and AC Wall Charger is a sensible value option for photographers who need multiple NP-FM500H-compatible spares and a compact wall charger. It delivers the expected 7.4V, useful 2400mAh capacity, and international-friendly AC input, making it a good buy for hobbyists and event shooters who want reliable backup power without paying a premium for OEM parts.

Frequently Asked Questions

Are these batteries compatible with Sony NP-FM500H models?
Yes. The batteries are sold as compatible replacements for the Sony NP-FM500H battery model used in many Alpha and DSLR models.

Does the kit include international plug adapters or a car charger?
No. The package includes four batteries and one AC wall charger; a car adapter or European plug is not included and must be purchased separately if needed.

How can I tell when a battery is fully charged?
The included AC charger has LED indicators: red while charging and green when the battery is in standby or fully charged.