Kastar 4-Pack Battery and LCD Dual Fast Charger - Reliable Power

In this review the Kastar 4-Pack Battery and LCD Dual Fast Charger is assessed for photographers who need dependable spare power and a flexible charging solution for Fujifilm GFX cameras. The bottom line: the kit pairs four 10.8V 1250mAh replacement lithium-ion batteries with an intelligent dual fast charger that can handle two batteries at once while showing their status on an LCD, making it an attractive option for extended shoots and grip use where quick, visible charging matters. The reviewer found the combination useful for users seeking cost-effective long run time and simple charging control.

Key Features

• Replacement Battery: The 10.8V 1250mAh lithium-ion battery provides a long lasting, manufacturer-priced alternative to the original NP-T125 for extended shooting sessions.
• Dual Fast Charger: The included LCD dual fast charger charges two batteries simultaneously and displays charging status and battery capacity for clear, at-a-glance monitoring.
• Wide Input Voltage: The charger accepts 110-240V worldwide input voltage so it can be used internationally without a separate converter.
• Intelligent Control: Built-in MCU automatically identifies battery voltage and uses intelligent CC/CV charging to prevent overcharge and improve safety.
• 0V Activation and Pre-charge: The charger supports pre-charging and 0V activation for Li-ion cells, which can help revive deeply discharged batteries and extend service life.
• Compatibility: Designed to work with Fujifilm NP-T125 batteries, BC-T125 charger form factor, GFX 50S/50R/100 cameras and the VG-GFX1 grip for straightforward replacement use.

Who It's For

Photographers who use Fujifilm GFX 50S, GFX 50R or GFX 100 cameras and need extra run time without carrying multiple single-use chargers will appreciate this kit. It is particularly useful for portrait, studio, and landscape shooters who value visible charging status and the convenience of charging two batteries at once.

It may be less appropriate for users who require OEM-branded batteries for warranty or service reasons, or for those who prefer higher-capacity third-party cells; this product favors reliable compatibility and intelligent charging rather than maximum raw capacity per cell.

Pros & Cons

Pros

• Includes four replacement 10.8V 1250mAh lithium-ion batteries for extended shooting without frequent swaps.
• LCD dual charger displays charge status and battery capacity for easy monitoring during busy shoots.
• Wide 110-240V input and intelligent MCU control make the charger safe and travel friendly.
• CC/CV charging with pre-charge and 0V activation can help protect battery life and revive low-voltage cells.

Cons

• Batteries are 1250mAh rather than higher-capacity options, so very long shoots may still require more spares.
• Does not replace the need for OEM batteries where manufacturers require original parts for warranty coverage.

Specifications

Product Type	Replacement battery pack with dual fast charger
Battery Type	Lithium-Ion
Battery Voltage	10.8V
Battery Capacity	1250mAh (each)
Charger Input Voltage	110-240V
Charger Features	LCD display, CC/CV charging, 0V activation, MCU intelligent control
Compatibility	Fujifilm NP-T125, BC-T125, GFX 50S/50R/100, VG-GFX1 grip

Our Verdict

The Kastar 4-Pack Battery and LCD Dual Fast Charger is a practical, value-oriented kit for Fujifilm GFX users who need dependable spare batteries and a clear, efficient way to charge two cells at once. Its intelligent charging features and worldwide input make it a sensible buy for working photographers and travelers, though those wanting the absolute highest capacity or OEM-only replacements should compare alternatives.

Frequently Asked Questions

Are these batteries compatible with Fujifilm GFX 50S and GFX 100?
Yes, the batteries are specified as compatible with Fujifilm NP-T125 and list GFX 50S, GFX 50R and GFX 100 camera models.

Can the charger handle international voltages?
Yes, the charger supports 110-240V input so it can be used worldwide with the correct plug adapter.

Will the charger damage batteries by overcharging?
The charger uses MCU-controlled CC/CV charging with overcharge protection and a visible LCD status, which helps prevent overcharging and extends battery life.