Kastar NP-W235 4-Pack Battery Replacement - High Capacity Power

Our review of the Kastar 4-Pack NP-W235 battery replacement finds it best suited for photographers who need extended runtime without carrying multiple single-use cells. The four high capacity 2040mAh lithium-ion batteries give noticeably longer shooting sessions for mirrorless bodies that accept the NP-W235, and the included LCD AC charger kit makes recharging multiple cells straightforward. For anyone using the Fujifilm X-T4 or compatible medium format bodies, this kit is a practical, cost-effective way to keep spare power on hand while retaining safety protections.

Key Features

• High capacity cells: Each 2040mAh battery delivers longer runtime so you can shoot more frames per charge without swapping frequently.
• LED battery indicator: The 4 LED lights on each battery make it easy to check remaining charge at a glance while in your bag or on the go.
• Safety protections: Built-in over-charge, over-discharge, over-voltage, over-current, and over-heating circuits help protect camera and battery during use.
• Charger kit included: The package includes an LCD AC charger that recharges cells clearly and lets you manage a four-pack conveniently.
• Wide compatibility: Works with cameras and chargers designed for the Fujifilm NP-W235 battery standard, making it a direct replacement option.

Who It's For

The Kastar 4-pack is ideal for travel, event, and landscape photographers using Fujifilm X-T4 and other bodies reading NP-W235 who want dependable extra capacity without repeatedly buying single OEM units. It suits users who value a simple, all-in-one kit with a charger and multiple batteries for day-long shoots.

Photographers who require official manufacturer service or who use camera models explicitly excluded from compatibility should look elsewhere. This kit is a third-party replacement meant to match NP-W235 form and function rather than provide manufacturer warranty service.

Pros & Cons

Pros

• High 2040mAh capacity per cell extends shooting sessions compared with lower-capacity spares.
• Four-pack plus LCD AC charger provides immediate, practical value for multi-battery workflows.
• Multiple safety circuits and UL1642 & CE compliance reduce risk of faulty operation.

Cons

• Third-party replacements occasionally prompt compatibility checks with some camera firmware updates, so users should verify function with their body.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.2V
Battery Capacity	2040mAh
Package Contents	4-Pack Batteries and 1 LCD AC Charger Kit
Safety Standards	UL1642 & CE
Compatible Models	Fujifilm NP-W235, Fujifilm BC-W235 charger, X-T4, GFX 50S II / GFX 100S

Our Verdict

The Kastar NP-W235 4-pack is a good value for photographers who need multiple dependable spares and a single charger in one kit. With higher capacity 2040mAh cells, LED status indication, and built-in safety protections, it delivers extended run time and practical convenience for X-T4 and other compatible mirrorless users looking to avoid frequent recharges or single battery replacements.

Frequently Asked Questions

Are these batteries compatible with the Fujifilm BC-W235 charger?
Yes, the kit lists compatibility with the BC-W235 charger and includes an LCD AC charger for multiple batteries.

Will these work in the GFX 100 camera?
No, the product notes compatibility with the GFX 100S and GFX 50S II but explicitly states it is not compatible with the GFX 100 camera.

Do the batteries include safety protections?
Yes, the cells include built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protection and meet UL1642 & CE standards.