MT81 Generator Sizing

This document outlines the recommended specifications for gasoline or diesel generators used to provide shore power to an MT81 Security Trailer

The MT81 Security Trailer includes a 1,600 W solar array designed to maintain battery health and system uptime under optimal solar conditions.

If a deployment location does not provide sufficient solar exposure to sustain operation, Verkada recommends connecting AC shore power to ensure continued system availability.

Use the 120 V AC / 15 A port on the rear of the unit to connect an external power source. See the installation guide for more information.

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Generator sizing considerations for MT81 charging

The MT81 AC charger is designed to draw close to the maximum output of a standard 120 V, 15 A circuit, which equates to approximately 1,600–1,700 W of continuous load.

Limitations of 1–2 kW generators

Many generators marketed as 2,000 W only deliver ~1,600 W of continuous power, with the higher rating referring to peak or surge output. Operating a generator at or near its continuous limit for extended periods can result in the following issues:

• Circuit breaker or fuse trips: Causes intermittent or interrupted charging.

• Power instability: Voltage and frequency fluctuations can occur when the generator is under sustained load.

• Charger protection resets: The MT81 charger may shut down to protect itself from unstable or “dirty” power.

• Environmental derating: Generator output may be reduced in high-temperature or high-altitude environments.

These issues commonly occur with 1–2 kW generators powering high-draw charging systems.

Benefits of a 3 kW generator

Using a 3,000 W (3 kW) class generator allows the MT81 charger to operate at approximately 60–70% of the generator’s rated capacity, providing sufficient power headroom for stable operation. This helps ensure:

• Stable power delivery: Consistent voltage and frequency during charging.

• Improved reliability: Reduced risk of nuisance breaker trips or charger shutdowns.

• Environmental resilience: More reliable operation in high temperatures, dusty environments, or at higher elevations.

• Improved generator longevity: Reduced strain on the generator during extended use.

Deployment consistency and support impact

Generator performance and power quality can vary significantly by manufacturer and price tier. Recommending a 3 kW class generator helps ensure:

• Consistent performance across a wide range of deployments

• Reduced troubleshooting during setup and operation

• Fewer support cases related to power instability

• A more reliable customer experience, including when using entry-level generator models