Kastar EN-EL4a 2-Pack Battery and Dual LCD Fast Charger - Reliable

Our review of the Kastar 2-Pack EN-EL4a Battery and AC LCD Dual Fast Charger finds it best for photographers who need reliable, longer runtime power for older Nikon pro bodies and want a flexible charger that handles two batteries at once. The biggest reason to buy is the package pairing: two 11.1V 3200mAh lithium-ion replacement batteries plus a dual fast charger with an LCD that shows charging status, making it easy to keep spares charged for long shoots or travel. The set is a practical alternative for users of EN-EL4 series batteries and those who use Nikon D2/D3 series or D300/D700 bodies with a compatible grip.

Key Features

• Replacement battery: Each 3200mAh lithium-ion cell delivers extended runtime for DSLR sessions and shoots where original batteries run short.
• Wide input voltage: The charger accepts 110-240V worldwide input so it is convenient for travel and international shoots without a bulky voltage converter.
• Dual fast charging: The LCD dual charger can charge two batteries simultaneously and displays each battery's charging status and capacity for quick checks.
• Smart MCU control: The intelligent control system identifies battery voltage and applies CC/CV charging with pre-charge and 0V activation to protect cells and extend service life.
• Compatibility: The batteries are compatible with Nikon EN-EL4, EN-EL4a and EN-EL4e models and the charger is compatible with chargers MH-21 and MH-22 formats.

Who It's For

Photographers using legacy Nikon bodies such as D2, D3 series, D300, D300S and D700 with MB-D10 or MB-40 grips will get the most value, especially if they need two spare batteries and want a single charger that handles both. Travel shooters who need universal 110-240V compatibility and simple LCD status readouts will appreciate the convenience.

Those who use newer Nikon models with different battery chemistry or who require branded factory batteries for warranty or pro rental house compliance should look elsewhere; this is a third-party replacement solution meant for extended runtime and backup use rather than OEM service support.

Pros & Cons

Pros

• Includes two high-capacity 3200mAh batteries that extend shooting time compared with older cells.
• Dual fast charger with LCD makes it easy to monitor charging status for both batteries at once.
• Worldwide 110-240V input and intelligent MCU charging add convenience and protection during travel.

Cons

• Requires the BL-3 battery chamber cover for use with certain grips, which must be purchased separately.

Specifications

Our Verdict

The Kastar 2-Pack EN-EL4a batteries with the LCD dual fast charger are a solid value for photographers using compatible Nikon cameras who need dependable spare power and a travel-friendly charger. The smart charging features and simultaneous dual charging make it practical for extended shoots, while the high-capacity 3200mAh cells help avoid mid-session battery swaps. It is a sensible third-party replacement if OEM batteries are not required.

Frequently Asked Questions

Are these batteries compatible with Nikon EN-EL4a cameras?
Yes, the pack is designed to replace Nikon EN-EL4, EN-EL4a and EN-EL4e batteries and works with cameras listing those battery models.

Can the charger be used internationally?
Yes, the charger accepts 110-240V input so it works on international mains voltages without a separate converter.

Do I need anything extra to use these in a camera grip?
Some grips such as MB-D10 or MB-40 may require the BL-3 battery chamber cover, which is noted as needed and is not included in this package.