SMALLRIG Base Battery CB75 73.8Wh - Slim 65W USB-C Power

In this review of the SMALLRIG Base Battery CB75 the bottom line is simple: this is a compact, cinema-grade base battery for creators who need a clean mounting solution and reliable, fast charging. The unit's slim 3cm profile and built-in Arca-compatible plate make it more than a battery - it doubles as a baseplate that cuts setup time. For on-location filmmakers and content creators who juggle cameras, monitors and lights, the CB75 delivers all-day capacity with rapid 65W USB-C recharge and a clear live display for confident power management.

Key Features

• Tool-Free Direct Mounting: The top 1/4'-20 screw and included Arca quick release plate let you attach cameras or cages without extra adapters, speeding rig assembly.
• 5-Port Power Hub: Two D-Tap, two 65W USB-C and one DC5521 8V port allow simultaneous powering of camera bodies, monitors and LED lights during shoots.
• Dual 65W Fast Charging: Two USB-C inputs deliver fast recharge so the 73.8Wh pack is fully replenished in about two hours, reducing downtime between shoots.
• Slim, Travel-Friendly Profile: At roughly 3cm (1.2 in) thick the battery stays unobtrusive on a rig or tripod while still providing 73.8Wh of capacity for long sessions.
• Real-Time Power Monitoring: The full-color HD screen reports charge level and input/output data so you can manage power use and avoid mid-shoot surprises.
• Safety and Reliability: Premium LG cells and an intelligent protection circuit offer over-voltage, short-circuit and temperature safeguards for field and studio work.

Who It's For

The CB75 is aimed at independent cinematographers, documentary teams, and content creators who need a tidy, integrated base battery that mounts directly under a camera or inside a cage. It fits workflows where multiple accessories must be powered simultaneously and where fast recharge is valuable between takes.

It is less suited to users who require extremely long multi-day power without recharging or those who need proprietary camera batteries for hot-swapping; for pure camera-body hot-swap workflows a dedicated manufacturer battery system remains the better choice.

Pros & Cons

Pros

• Compact baseplate integration eliminates extra adapters and reduces rig clutter.
• Versatile outputs (2x D-Tap, 2x 65W USB-C, DC5521) power multiple accessories at once.
• Fast dual 65W charging restores the 73.8Wh battery in about two hours.
• Clear HD display gives immediate visibility of remaining power and current draw.

Cons

• 73.8Wh is robust for a slim unit but may require a backup for very long shoots without access to power.
• The integrated baseplate design is tailored to Arca-style workflows and may be unnecessary if you never mount the battery beneath your camera.

Specifications

Capacity	73.8Wh / 5000mAh
Thickness	Approx. 3cm (1.2 in)
Output Ports	2x D-Tap, 2x 65W USB-C, 1x DC5521 8V
Mounting	Top 1/4'-20 screw, bottom 1/4'-20 threaded hole, Arca plate included
Battery Cells	Premium LG cells with protection circuit
Display	Full-color HD screen showing charge level and I/O data

Our Verdict

The SMALLRIG Base Battery CB75 is a smart choice for creators who value a tidy rig and reliable, fast charging. It packs 73.8Wh into an ultra-slim package, adds a built-in Arca-compatible baseplate and offers multiple outputs for on-set reliability. For those who need a compact, multi-device power source that reduces setup friction, the CB75 represents solid value and professional-grade safety features.

Frequently Asked Questions

Can this battery mount directly under my camera?
Yes, it has a top 1/4'-20 screw and an Arca-compatible quick release plate for tool-free direct mounting to cameras and cages.

How fast does it recharge?
Dual 65W USB-C charging allows the battery to recharge fully in about two hours under ideal conditions.

What outputs are available to power accessories?
The unit provides 2 D-Tap ports, 2 65W USB-C ports and one DC5521 8V port to run cameras, monitors and lights simultaneously.