Kastar LCD Dual Smart Fast Charger & 2x Battery Replacement - High

In this review the Kastar LCD Dual Smart Fast Charger with two replacement batteries is evaluated for photographers and videographers who need reliable spare power. The bottom line: this kit is best for users of older Sony camera models who want higher capacity replacements and a smart charger that manages two batteries at once. The reviewer found the combo delivers long runtimes from the Kastar batteries and useful feedback from the LCD charger, making it a practical, cost-effective backup power solution for field work and extended shoots.

Key Features

• High capacity batteries: The Kastar cells use high quality Japanese cells to give longer run time and reduce memory effect so cameras run longer between charges.
• Dual fast charging: The charger can charge two batteries simultaneously, saving time when both spares need topping up before a shoot.
• Wide voltage compatibility: The charger handles batteries from 6.8V to 16.8V, allowing it to accept a range of camera battery sizes without manual configuration.
• Smart MCU control: An internal control MCU identifies battery voltage and manages an intelligent charge cycle to prevent overcharge and protect battery life.
• LCD status display: The built-in LCD shows charging status and battery capacity so it is easy to monitor progress at a glance while charging two batteries.
• CC/CV charging with protections: The charger uses CC/CV charging plus pre-charge and 0V activation functions to revive depleted li-ion cells and improve long-term reliability.

Who It's For

This kit suits stills photographers and casual videographers using Sony models compatible with NP-QM71D, NP-QM91D, NP-FM55H, NP-FM70, NP-FM90 and similar batteries who need dependable spare power and clear charge feedback. It is particularly useful for people who travel or shoot events and must top up two batteries quickly between sessions.

It is less appropriate for users who require manufacturer-original branded batteries for professional warranty reasons or for cameras that use different proprietary battery formats. Also, those who need ultra-compact single-bay chargers for light carry might prefer a smaller alternative.

Pros & Cons

Pros

• High capacity replacement batteries extend run time compared with older cells.
• Dual fast charger with LCD makes charging two batteries straightforward and quick.
• Smart MCU and CC/CV charging add safety and help prevent overcharge.

Cons

• The kit is an aftermarket solution, so buyers wanting original manufacturer parts should look elsewhere.
• The charger is larger than single-bay models, which may be less convenient for minimal pack setups.

Specifications

Our Verdict

The Kastar LCD Dual Smart Fast Charger with two high capacity batteries is a practical value kit for owners of compatible Sony cameras who need dependable spare power and clear charge monitoring. It combines intelligent charging, safety features, and useful LCD readouts so it is a sensible purchase for event photographers and hobbyists who prefer aftermarket capacity and faster turnaround between batteries.

Frequently Asked Questions

Will these batteries fit my older Sony camcorder?
They are listed as compatible with NP-QM71D, NP-QM91D, NP-FM55H, NP-FM70, NP-FM90 and similar models, so they fit cameras that accept those battery types.

Can the charger revive a fully depleted battery?
Yes, the charger includes a pre-charge and li-ion 0V activation function designed to recover deeply discharged cells when safe to do so.

Does the charger protect against overcharging?
The internal MCU automatically identifies voltage and manages charge cycles to help prevent overcharge and protect battery life.