Kastar 4-Pack D-Li90 Batteries and LCD AC Charger - Reliable Power

In this review the Kastar 4-Pack D-Li90 Battery and LCD AC Charger kit is examined for photographers who need dependable backup power for older Pentax bodies. The bottom line: this kit is for shooters who require multiple spare batteries and a compact charger that reports charge status and remaining capacity. It replaces single batteries with a set of four 7.4V 2900mAh cells and includes an LCD AC charger with a foldable flat pin, making it a practical, space-conscious option for extended shoots and travel.

Key Features

• Battery Type: The included lithium-ion batteries are 7.4V and 2900mAh, providing long runtime between swaps for DSLR shooting sessions.
• 4-Pack Convenience: Four identical batteries mean fewer interruptions on location and a simple charging rotation to keep a camera ready.
• LCD AC Charger: The charger shows charging status and battery capacity on an LCD so users can verify state of charge before heading out.
• Universal AC Input: With 100~240V 50~60Hz input the charger can be used internationally with no separate transformer for travel.
• Compact Storage: A foldable flat pin on the charger reduces bulk for packing into a camera bag or carry-on case.

Who It's For

This kit is best for photographers using compatible Pentax cameras such as the 645D, 645Z, K-1, K-3, K-5 series and earlier models who want multiple spare batteries and a single, informative charger to manage them. Wedding shooters, landscape photographers on multi-day trips, and anyone who prefers having replacement power on hand will appreciate the 4-pack approach.

It is less suitable for users who only need one spare battery or who require original-brand batteries for warranty reasons. If you need a charger that accepts very different battery sizes or a multi-slot rapid charger for simultaneous charging of more than one cell, this single-slot AC charger may not meet that specific need.

Pros & Cons

Pros

• Multiple batteries in one kit reduce downtime and provide practical redundancy during long shoots.
• Clear LCD on the charger makes it easy to check charging progress and capacity without guessing.
• Worldwide AC input and a foldable pin make the charger travel-friendly and compact to store.

Cons

• The kit uses a single-slot AC charger, so charging four batteries requires consecutive charging sessions rather than simultaneous charging.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	2900mAh
Charger Input	AC 100~240V 50~60Hz
Charger Output	DC 8.4V 800mA
Package Contents	4-Pack Batteries and 1 LCD AC Charger Kit

Our Verdict

The Kastar 4-Pack D-Li90 kit is a cost-effective way to keep compatible Pentax cameras powered during extended outings, providing robust 2900mAh capacity and a charger that displays status and capacity. It offers strong travel convenience with universal input and a foldable pin, and it is good value for photographers who need multiple spares, though those requiring simultaneous multi-battery charging should consider a different charger solution.

Frequently Asked Questions

Are these batteries compatible with Pentax D-Li90?
Yes. The pack is stated compatible with Pentax battery models D-Li90, DLI90 and DL190 used in listed Pentax camera models.

Does the charger work internationally?
Yes. The charger accepts AC 100~240V 50~60Hz input, so it works on common global voltages without a separate transformer.

How long does a full battery charge take?
Charging speed is governed by the charger output of DC 8.4V 800mA; actual time depends on the battery state but expect several hours per battery.