Kastar SB-L320 Battery 4-Pack Replacement for Mamiya Leaf Aptus - Long

In this review the Kastar SB-L320 4-pack is evaluated as a practical replacement battery set for Mamiya Leaf medium format camera users who need longer runtime and fewer battery swaps on shoots. The bottom line: this pack is for photographers who already own compatible Mamiya Leaf Aptus or AFi-II backs and want a higher capacity, safer lithium-ion option that extends shooting time without changing camera habits. It delivers a clear benefit in extended operation thanks to its 4800mAh capacity and built-in protection circuitry, making it an easy swap-in replacement for demanding sessions.

Key Features

• High Capacity: Each battery offers a 4800mAh capacity so the camera runs noticeably longer between charges, reducing downtime on location shoots.
• Compatible Design: The pack is listed as compatible with multiple Mamiya Leaf Aptus and AFi-II models so photographers can use one battery solution across several medium format backs.
• Safety Protections: Built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protection help protect the camera and battery during heavy use.
• Trusted Cells: The Kastar cells meet UL1642 and CE standards, offering reassurance about the battery chemistry and construction under typical working conditions.
• Value Pack: The shipment contains four batteries, which reduces the need to purchase multiples separately and keeps a ready supply for extended jobs.

Who It's For

The ideal buyer is a professional or advanced enthusiast shooting with Mamiya Leaf Aptus or AFi-II backs who wants longer single-charge performance and a small fleet of spare batteries for studio days or fieldwork. It is particularly useful for photographers who travel or shoot long events and need fewer battery swaps.

This 4-pack is less useful for casual users who shoot infrequently or for someone who prefers charging solutions that match original-brand chargers and warranties; those users may prefer purchasing single OEM batteries or a dedicated charger system instead.

Pros & Cons

Pros

• High 4800mAh capacity translates to longer run time and fewer interruptions during shoots.
• Comes as a 4-pack so photographers have multiple spares ready without repeated purchases.
• Safety certifications and built-in protection circuitry reduce the risk of battery-related faults.

Cons

• Not an original Mamiya Leaf branded battery, so some users may prefer OEM for warranty or brand consistency.
• Charger compatibility is assumed rather than specified, so confirm fit with existing chargers before purchase.

Specifications

Battery Type	Lithium-ion
Battery Voltage	7.4V
Battery Capacity	4800mAh
Pack Quantity	4-Pack Batteries
Safety Standards	UL1642, CE
Protection Circuitry	Over-charge, over-discharge, over-voltage, over-current, over-heating

Our Verdict

The Kastar SB-L320 4-pack is a sensible, cost-effective replacement for Mamiya Leaf Aptus and AFi-II users who need extended runtime and multiple spares. Its high 4800mAh capacity and comprehensive protection circuitry make it a practical choice for professionals who prioritize longer shooting sessions and safety without paying for multiple OEM batteries.

Frequently Asked Questions

Are these batteries compatible with Mamiya Leaf Aptus models?
Yes, the pack lists compatibility with Mamiya Leaf Aptus and AFi-II series backs including Aptus 17, 22, 65, 75 and several Aptus-II and AFi-II models.

Do these batteries include safety protections?
Yes, the batteries include built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protection and meet UL1642 and CE standards.

How many batteries are included?
The package includes four batteries, providing a ready set of spares for extended shoots.