Kastar LPE4 2-Pack 11.1V 4400mAh Batteries + LCD Dual Fast Charger

In this review the Kastar 2-Pack LPE4 battery kit is evaluated for professional photographers and serious enthusiasts who need dependable spare power for Canon EOS 1D series cameras. The kit pairs two 11.1V, 4400mAh lithium-ion replacement batteries with an LCD dual fast charger that can handle worldwide 110-240V input and a wide voltage range, and the single biggest reason to buy is straightforward: it supplies extended runtime plus an intelligent charger that simultaneously monitors and charges two batteries, reducing downtime on location shoots.

Key Features

• High capacity batteries: The twin 4400mAh cells provide extended shooting time so users can work longer between charges.
• Wide compatibility: The batteries are compatible with Canon LP-E4 and US 5751B002 battery models and fit several Canon EOS 1D series cameras.
• LCD dual fast charger: The charger displays charging status and battery capacity so photographers can monitor two batteries at once.
• Worldwide input: With 110-240V input the charger can be used internationally without a separate adapter for most outlets.
• Intelligent MCU control: The charger automatically identifies voltage and uses protection routines to prevent overcharge and manage safe charging.
• CC/CV charging with pre-charge: Constant current/constant voltage charging and 0V activation help maintain battery health over time.

Who It's For

This kit suits professional photographers, photojournalists, and experienced enthusiasts using Canon EOS 1D Mark IV, Mark III, 1D X and related bodies who need a reliable second set of batteries and a fast way to recharge them between sessions. The high capacity cells are helpful for long events, travel shoots, or any situation where swapping batteries frequently is a disruption.

Those with very light casual use or who prefer only OEM-branded power solutions might look elsewhere; if you never shoot more than a handful of frames between charges or require a manufacturer warranty tied to camera makers, an original battery might better match those preferences.

Pros & Cons

Pros

• High 4400mAh capacity offers noticeably longer run time compared with lower-capacity replacements.
• Dual fast charger with an LCD makes it easy to charge and monitor two batteries simultaneously.
• Wide input voltage and intelligent MCU control make charging safer and suitable for travel.
• Pre-charge and 0V activation help revive deeply discharged cells and support battery longevity.

Cons

• It is a third-party replacement, so buyers seeking only OEM batteries may prefer an original brand option.
• The kit description is focused on compatibility with specific Canon models, so users should verify fit before purchase.

Specifications

Brand	Kastar
Battery type	Lithium-Ion
Voltage	11.1V
Capacity	4400mAh
Charger input	110-240V worldwide
Charger output range	6.8V - 16.8V compatible
Compatible battery models	Canon LP-E4, US 5751B002

Our Verdict

The Kastar 2-Pack LPE4 batteries with LCD dual fast charger are a practical, cost-effective choice for photographers using Canon EOS 1D series cameras who need more shooting time and a reliable way to recharge on the go. The high capacity cells and intelligent charger deliver real value for extended shoots, making this a solid option for pros and serious hobbyists who accept third-party replacements.

Frequently Asked Questions

Are these batteries compatible with Canon 1D Mark IV?
Yes, the pack is compatible with Canon EOS 1D Mark IV and other listed 1D series models when the camera uses LP-E4 type batteries.

Can the charger be used internationally?
Yes, the charger supports 110-240V input so it works with most international power supplies.

Can the charger charge two batteries at once?
Yes, the LCD dual fast charger is designed to charge and display the status of two batteries simultaneously.