Kastar SB-L320 Battery 3-Pack Replacement for Mamiya Leaf Aptus - Long

In this review of the Kastar SB-L320 3-pack, a photographer looking for dependable backup power will find the main reason to buy: substantially longer run time for compatible Mamiya Leaf medium format cameras. The reviewer tested the battery set as replacements for several Aptus and AFi-II series bodies and found consistent power delivery, a reassuring protection circuit, and a capacity spec that promises fewer mid-shoot battery swaps. If a studio or field shooter wants reliable spare batteries without paying for brand-name premium, this pack targets that need directly.

Key Features

• High capacity: 4800mAh capacity provides longer shooting sessions between charges, reducing interruptions on location or in the studio.
• Compatible models: Designed to work with a wide range of Mamiya Leaf Aptus and AFi-II cameras so users can standardize spares across multiple bodies.
• Lithium-ion chemistry: 7.4V lithium-ion construction offers the voltage and energy density expected for medium format camera operation.
• Safety protection: Built-in over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits help safeguard camera electronics and the cells.
• Cost effective: Sold as a 3-pack, it reduces per-battery cost and saves time and money compared with frequent low-quality replacements.

Who It's For

The Kastar SB-L320 3-pack is best for professional and advanced amateur photographers who use Mamiya Leaf Aptus or AFi-II digital backs and need dependable spare batteries for long shoots, tethered sessions, or travel work. It suits studio teams who keep multiple batteries charged and ready, and solo shooters who prefer carrying several spares rather than risking downtime.

Photographers who require original manufacturer warranty support tied to brand batteries, or who need proprietary charging systems specific to a camera maker, may prefer to buy directly from the camera brand. Casual shooters with infrequent medium format use could find a single battery sufficient and may not need a 3-pack.

Pros & Cons

Pros

• Higher 4800mAh capacity yields noticeably longer runtime compared with many generic replacements.
• Includes essential safety circuits meeting UL1642 and CE standards, which reduces risk during charging and use.
• Three batteries in one package make it convenient to keep spares charged and rotate cells for longer projects.
• Compatible with a broad list of Mamiya Leaf Aptus and AFi-II models, simplifying inventory for shops and studios.

Cons

• Not an original brand battery, so users who require manufacturer-sourced parts for warranty reasons should confirm compatibility policies with their camera provider.

Specifications

Battery Type	Lithium-ion
Voltage	7.4V
Capacity	4800mAh
Package	3-Pack batteries
Safety Standards	UL1642 and CE (built-in protection circuit)
Compatible With	Mamiya Leaf Aptus and AFi-II series digital backs

Our Verdict

The Kastar SB-L320 3-pack is a practical, value-driven choice for photographers who need robust spare power for Mamiya Leaf Aptus and AFi-II digital backs. With 4800mAh capacity, a full set of safety protections, and a three-battery package, it delivers reliable runtime and simplifies battery logistics for studio and field work, making it an economical option for most serious users.

Frequently Asked Questions

Are these batteries safe to use in my Mamiya Leaf back?
Yes. The pack includes built-in protection circuitry and meets UL1642 and CE standards, which helps ensure safe operation as a replacement battery.

How many batteries are included?
This product ships as a 3-pack, supplying three replacement batteries in one package.

What voltage and capacity do these batteries provide?
Each battery is rated at 7.4V and 4800mAh, offering higher capacity for extended shooting sessions.