Kastar EN-EL4a 4-Pack Battery and Dual LCD Fast Charger - Long Runtime

In this review the focus is practical: the Kastar EN-EL4a 4-Pack battery bundle with the Kastar LCD Dual Fast Charger is aimed at photographers who need extended shooting time and simple, reliable charging. The single biggest reason to buy is straightforward - four high-capacity 11.1V 3200mAh replacement batteries plus a dual charger that can handle two batteries at once remove battery anxiety on long shoots or travel. The review examines real-world runtime, compatibility with Nikon pro bodies, and whether the intelligent charger protects battery health during repeated cycles.

Key Features

• High capacity backup: Each 11.1V 3200mAh lithium-ion battery provides extended runtime that reduces the need to swap cells during long photo sessions.
• Wide compatibility: The pack is stated compatible with Nikon EN-EL4/EN-EL4a/EN-EL4e battery models and supports multiple Nikon pro cameras for seamless replacement use.
• Dual fast charging: The Kastar LCD Dual Fast Charger charges two batteries at once and shows charging status and capacity on the display for convenient monitoring.
• Worldwide input: The charger accepts 110-240V input so it can be used internationally without a separate adapter for voltage.
• Smart charge control: The charger's MCU automatically identifies battery voltage and uses CC/CV charging with pre-charge and 0V activation to protect cells and help extend battery life.
• Versatile charger plates: Removable plates let the charger accept batteries across a wide voltage range, useful for users who work with different battery types.

Who It's For

This bundle is best for professional and enthusiast photographers who use Nikon D2, D3 series, D300 series, D700 or similar bodies and need multiple spare cells for long events, studio shoots, or travel. The 3200mAh capacity and four-battery count make it an efficient way to carry enough power for extended days away from mains power.

Photographers who require official manufacturer batteries for warranty-sensitive work or who need a single OEM charger may want to look elsewhere; this product is a third-party replacement meant to balance cost and performance rather than being an original Nikon accessory.

Pros & Cons

Pros

• Four high-capacity 3200mAh batteries provide substantial extra shooting time compared with one spare.
• The dual LCD charger displays charge status and can charge two batteries simultaneously, saving downtime between shoots.
• Worldwide 110-240V input and intelligent MCU charging make it practical for travel and safer long-term use.

Cons

• Third-party replacements may not be identical to OEM performance or accepted for some manufacturer service requirements.
• Some camera grips or setups may require an extra battery chamber cover to fit these replacement cells.

Specifications

Our Verdict

The Kastar EN-EL4a 4-Pack with dual LCD fast charger is a solid value for photographers who need multiple spares and a reliable way to charge two batteries at once. It delivers long runtime per cell, smart charging features to protect battery health, and international compatibility, making it a practical choice for event, studio, and travel shooting where cost-effective capacity matters more than OEM branding.

Frequently Asked Questions

Are these batteries compatible with Nikon D3 series?
Yes, they are listed as compatible with Nikon D3, D3S and D3X models when using the EN-EL4/4a form factor.

Can the charger be used worldwide?
Yes, the Kastar LCD Dual Fast Charger supports 110-240V input for international use.

Will I need any extra parts to use these in a battery grip?
Some camera grips or adapters may require an extra BL-3 battery chamber cover for proper fitment, as noted in the product information.