Kastar LCD Dual Smart Fast Charger & 2x NP-FM500H Battery Pack

Our review of the Kastar LCD Dual Smart Fast Charger with two replacement NP-FM500H batteries finds this kit aimed at photographers and videographers who need dependable, high-capacity power on location. The single biggest reason to consider it is the combination of the Kastar batteries' ultra-high capacity and the intelligent dual charger with an LCD that shows charge status; together they reduce downtime between shoots and support simultaneous charging of two batteries. This reviewer found the set practical for extended field work with Sony Alpha SLT and DSLR cameras that use NP-FM500 series batteries.

Key Features

• Ultra-high capacity batteries: The replacement NP-FM500H cells use high quality Japanese cells to deliver longer runtime and reduce the need for frequent swaps during long shoots.
• Dual fast charger: The charger can charge two batteries at once, cutting wait time when multiple batteries need replenishing between sessions.
• Intelligent voltage detection: The charger MCU automatically identifies battery voltage and applies appropriate charging to prevent overcharge and improve safety.
• LCD charging display: The built-in LCD reports charging status and battery capacity so you can see progress at a glance and plan battery use.
• CC/CV charging with pre-charge: The charger uses constant current/constant voltage charging and supports pre-charging and 0V activation to revive deeply discharged li-ion cells and extend battery life.

Who It's For

The Kastar pack suits hobbyists and semi-pro photographers who shoot with Sony Alpha SLT models and older DSLRs that accept NP-FM500 series batteries and need a cost-effective way to keep two charged spares ready. Its intelligent charging and LCD feedback make it especially useful for travel shooters and wedding photographers who must manage battery cycles efficiently.

It is less appropriate for users who require brand-new OEM batteries for professional warranty or service reasons, or those who need a single rapid charger with proprietary camera integration; this is a third-party replacement and multi-bay charger rather than a camera-branded accessory.

Pros & Cons

Pros

• High capacity replacement batteries that extend run time compared with older cells.
• Dual fast charging and simultaneous two-battery support saves time between jobs.
• LCD shows charge status and capacity, helping manage power on shoots.
• Safety-minded charging with MCU voltage detection and CC/CV control.

Cons

• As a third-party kit, some professionals may prefer official-brand batteries for guaranteed camera warranty alignment.
• Charger compatibility is broad but users should confirm their camera model accepts NP-FM500 series replacements.

Specifications

Product type	Dual charger + 2 replacement batteries
Battery model	NP-FM500H / NP-FM500 compatible
Battery cells	High quality Japanese cells, ultra-high capacity
Charger voltage range	6.8V - 16.8V automatic detection
Charging method	CC/CV with pre-charge and 0V activation
Display	LCD for charging status and battery capacity
Warranty	30-day money back and 18-month manufacturer warranty

Our Verdict

For photographers using Sony Alpha SLT and compatible DSLR models who want extended runtime and the convenience of charging two batteries at once, this Kastar kit represents solid value. The combination of higher-capacity Japanese cells and an intelligent LCD dual charger reduces downtime and protects battery health, making it a practical choice for location work and frequent shooters who want dependable spare power without a large price premium.

Frequently Asked Questions

Will these batteries work in my Sony Alpha camera?
These replacement NP-FM500H batteries are compatible with many Sony Alpha SLT and DSLR models that accept the NP-FM500 series; check your camera model against the product listing to confirm.

Can the charger charge two different battery types at once?
The charger auto-identifies voltage and supports a wide range of battery voltages, so it can charge two batteries simultaneously when they fall within the supported range.

Does the charger help revive fully drained batteries?
Yes, the charger supports pre-charging and li-ion 0V activation which can help revive deeply discharged cells and extend usable battery life.