Kastar 3-Pack EN-EL4a Battery and Dual Fast Charger - Long Life Power

In this review the Kastar 3-Pack EN-EL4a Battery and AC LCD Dual Fast Charger is evaluated as a practical power solution for photographers who need spares and a flexible charger. The bottom line: it is best for Nikon users with D2/D3 series bodies who want longer run time and the convenience of charging two batteries at once. The package combines three 11.1V 3200mAh lithium-ion replacement batteries with an intelligent LCD dual charger, and the standout reason to buy is the mix of capacity and dual charging that reduces downtime on location.

Key Features

• High capacity battery: Each 11.1V 3200mAh lithium-ion cell delivers extended shooting time for pro cameras so users can work longer between swaps.
• Dual fast charging: The LCD dual charger can charge two batteries at once, cutting total recharge time when you return to base.
• Wide input voltage: The charger accepts 110-240V worldwide input, making it convenient for travel and international shoots.
• Intelligent charging control: MCU control automatically identifies battery voltage and prevents overcharge for safer, longer battery life.
• Compatibility: The batteries are designed to work as replacements for Nikon EN-EL4 series packs and fit a long list of D2 and D3 cameras and the F6.
• CC/CV charging profile: The charger uses CC/CV with pre-charge and 0V activation to revive deeply discharged li-ion cells safely.

Who It's For

The Kastar pack is aimed at professional and advanced enthusiast photographers using Nikon D2, D3 series or F6 cameras who frequently shoot long events, sports, or location sessions and need multiple spare batteries plus a fast way to top them up. It is also a good option for photo assistants who manage power for a kit and appreciate the LCD status indicators.

Photographers who prefer OEM batteries for warranty reasons or who need a single-brand charger ecosystem may want to look elsewhere; this kit is a third-party replacement and best suited to users comfortable with compatible aftermarket batteries and accessories.

Pros & Cons

Pros

• High 3200mAh capacity extends shooting time compared with many stock packs.
• Dual LCD charger charges two batteries simultaneously and shows charge status and capacity.
• Worldwide 110-240V support and intelligent MCU control increase safety and travel friendliness.

Cons

• Third-party replacement batteries may not appeal to users who exclusively use OEM-branded power packs.

Specifications

Brand	Kastar
Battery Type	Lithium-Ion
Battery Voltage	11.1V
Battery Capacity	3200mAh
Charger Input	110-240V worldwide
Charger Features	LCD dual fast charger, MCU intelligent control, CC/CV, 0V activation
Compatibility	Nikon EN-EL4/EN-EL4a/EN-EL4e and D2/D3 series, F6 (see notes)

Our Verdict

The Kastar 3-Pack EN-EL4a battery kit with LCD dual fast charger is a strong value for Nikon users who need multiple high-capacity batteries and the ability to recharge two cells at once. It pairs useful travel-ready charger features with reliable charging chemistry, making it a practical backup power solution for extended shoots where OEM gear is not required.

Frequently Asked Questions

Are these batteries compatible with Nikon EN-EL4a?
Yes, the pack is compatible with Nikon EN-EL4, EN-EL4a and EN-EL4e battery models listed by the manufacturer.

Can the charger be used internationally?
Yes, the charger accepts 110-240V input so it can be used worldwide with the appropriate plug adapter.

Can it charge two batteries at once?
Yes, the intelligent LCD dual charger is designed to charge two batteries simultaneously and shows charging status and capacity on the display.