Kastar 4 Pack Battery and LCD Dual Rapid Charger - Dual Charge and LCD

In this review the Kastar 4 Pack Battery and LCD Dual Rapid Charger is examined for photographers who need reliable spare power and a simple way to monitor charging. The package combines four Kastar replacement lithium-ion batteries compatible with Fujifilm NP-T125 and an intelligent dual rapid charger that displays capacity on an LCD. The bottom line: this kit is for serious GFX series users who want a compact, travel-ready charging solution that can revive overdischarged cells and show percent remaining without a camera.

Key Features

• Replacement batteries: Four Kastar lithium-ion cells offer a 1250mAh capacity each, providing extra runtime for extended shoots away from mains power.
• Dual rapid charging: The intelligent charger can charge two batteries simultaneously at up to 1.0A per channel, saving time when multiple spares are needed.
• LCD capacity display: The charger shows the current percentage for each battery even when not connected to power, making it easy to check status at a glance.
• Wakeup function: Overdischarged batteries are woken before charging begins, which improves the chance of recovering deeply drained cells.
• Worldwide input: With 110-240V 50~60Hz support, the charger works in most countries without a separate converter for travel.

Who It's For

The Kastar 4 Pack is aimed at Fujifilm GFX 50S, GFX 50R, and GFX100 shooters who need multiple spare batteries and a reliable charger that tells you remaining capacity without attaching a battery to a camera. Wedding, event, and location photographers who rotate batteries through a grip or camera body will appreciate the ability to top up two cells at once.

Photographers who expect OEM-level warranty support or those who require the fastest possible charging rates may look elsewhere, but users who value practical features like LCD percentage readouts, wakeup for overdischarge, and worldwide voltage compatibility will find this kit a sensible and cost-effective choice.

Pros & Cons

Pros

• Four replacement batteries increase shooting time without needing to recharge in the field.
• Dual charger charges two batteries at once and reports percentage status on the LCD for quick checks.
• Wakeup function helps recover overdischarged cells so they can be safely charged.
• Wide 110-240V input makes it convenient for international travel.

Cons

• Charge rate is limited to 1.0A per channel, so top-up times are moderate rather than very fast.
• Replacement batteries are a third-party brand, so users seeking original manufacturer batteries may prefer OEM options.

Specifications

Battery type	Lithium-Ion
Battery voltage	10.8V
Battery capacity	1250mAh
Charger input	110-240V 50~60Hz
Charger output	CH1 4.2V/8.4V 1.0A, CH2 4.2V/8.4V 1.0A
Compatibility	Fujifilm NP-T125 batteries, BC-T125 charger, GFX 50S/50R/100, VG-GFX1 grip

Our Verdict

The Kastar 4 Pack Battery and LCD Dual Rapid Charger is a practical, value-oriented kit for GFX users who need multiple spares and a clear way to monitor charge status. It combines recover-ability for overdischarged cells, worldwide voltage support, and simultaneous dual charging, making it a solid choice for location shooters who prioritize reliability and convenience over the fastest possible top-up times.

Frequently Asked Questions

Will these batteries work in my Fujifilm GFX camera?
Yes, the batteries are compatible with Fujifilm NP-T125 battery models and fit GFX 50S, GFX 50R, and GFX100 cameras and the VG-GFX1 grip.

Can the charger charge two batteries at the same speed?
Yes, each channel provides up to 1.0A so two batteries can be charged simultaneously at the same rate.

Is the LCD useful when the charger is unplugged?
Yes, inserting a battery into the charger while unplugged will show the current percentage so you can verify status without powering the unit.