Kastar BP-Y100W V-Mount Battery Replacement for URSA Mini Series

In this review the Kastar BP-Y100W V-Mount battery is evaluated as a compact replacement power option for Blackmagic Design URSA Mini Pro 4.6K G2 and related URSA Mini cameras. The bottom line: this is a lightweight, portable battery that delivers a full 100Wh capacity at 14.8V in a small package, making it a strong choice for on-the-go shooters who need reliable runtime without bulky packs. The review focuses on real-world fit, charging flexibility and the built-in protections that matter during production.

Key Features

• Compact and light: At about 18.4 oz and 4 in x 2.8 in x 2.2 in, it is easy to carry and slips into camera bags without adding bulk.
• 100Wh capacity: The 6.8Ah/100Wh Li-ion cell provides substantial runtime for extended shoots while staying within common airline-friendly limits for many workflows.
• OLED display: The small screen shows battery voltage, capacity and USB output voltage so you can monitor remaining power precisely on location.
• Multiple charge inputs: Micro-USB, Type-C, D-Tap and BP inputs allow flexible charging from a variety of sources, useful when the main charger is not available.
• Versatile outputs: D-Tap, BP, Type-C and USB-A outputs cover camera power and accessory charging without adapters for most setups.
• Safety controls: Built-in protections guard against over-voltage, under-voltage, over-current and over-temperature for safer daily use.

Who It's For

This battery is aimed at independent filmmakers, DSLR and cinema camera operators, and run-and-gun shooters who need a genuine V-Mount form factor replacement for Blackmagic URSA Mini cameras. Its small size and 100Wh rating make it particularly useful for operators who travel or work in tight rigs where weight and space are constrained.

Those who require multi-day power without recharging or the highest-capacity solutions should look at larger V-Mount packs; likewise, crews who must charge multiple batteries simultaneously should note that only one input may be used to charge at a time and plan their workflow accordingly.

Pros & Cons

Pros

• Lightweight and compact design that reduces kit bulk while still delivering 100Wh capacity.
• Multiple input and output options, including Type-C and D-Tap, for flexible charging and powering accessories.
• OLED display provides clear status information so operators can manage run time accurately.

Cons

• Only one charging input can be used at a time, which limits charging flexibility when multiple sources are available.
• Smaller 100Wh capacity is excellent for portability but may require frequent recharging for long multi-camera shoots.

Specifications

Battery Type	Li-ion
Battery Voltage	14.8V
Battery Capacity	6.8Ah / 100Wh
Dimensions	4 in x 2.8 in x 2.2 in (102 x 72 x 56 mm)
Weight	About 18.4 oz
Inputs	Micro-USB 5V/3A; Type-C 5V/3A 9V/3A 12V/3A 15V/3A 20V/2.2A; D-Tap 16.8V/10A; BP 16.8V/10A
Outputs	D-Tap 14.8V/10A; BP 14.8V/10A; Type-C 5V/3A 9V/3A 12V/3A 15V/3A 20V/2.2A; USB-A 5V/3A

Our Verdict

The Kastar BP-Y100W V-Mount battery is a sensible, cost-effective replacement for URSA Mini shooters who value portability and flexibility. It delivers a true 100Wh capacity in a compact, lightweight case, offers multiple outputs and an easy-to-read OLED, and includes essential safety protections. It represents good value for solo operators and small crews, though larger productions needing longer runtimes may prefer higher-capacity packs.

Frequently Asked Questions

Will this battery fit the URSA Mini Pro 4.6K G2?
Yes, it is designed as a V-Mount replacement compatible with URSA Mini Pro 4.6K G2 and related URSA Mini models.

Can the battery be charged through multiple inputs at once?
No, only one charging input should be used at a time; using more than one simultaneously is not supported.

Does it provide USB power for accessories?
Yes, it includes a USB-A output at 5V/3A and a Type-C output with multiple voltage options for accessory charging.