The Airman EBOSS 220-125 is a diesel-battery hybrid energy system combining a 220 kVA Airman generator with 125 kWh of Lithium Titanate Oxide (LTO) battery storage. A large-frame hybrid for major construction sites, temporary facilities, and data center temporary power where fuel cost and emissions matter. At 176 kW prime / 194 kW standby, the EBOSS 220-125 delivers the same power class as Airman's conventional SDG220S but with dramatically lower fuel consumption and the ability to operate silently on battery during noise-restricted periods. The 125 kWh battery bank can carry significant loads independently, with the John Deere 6068 diesel engine activating only when battery state-of-charge requires it.
Features unlimited parallel capability. LTO battery chemistry for superior cycle life. Built by Hokuetsu Industries in Japan with 110% fluid containment.
The EBOSS 220-125 pairs a John Deere 6068 diesel engine with a 125 kWh LTO battery bank — the second-largest battery configuration in the EBOSS lineup. At this scale, the hybrid system delivers meaningful fuel savings on large sites where conventional diesel generators run continuously but rarely at full load. The 125 kWh battery capacity allows the system to absorb significant load variations without starting the diesel engine, and when the engine does cycle on, it runs at its most efficient operating point rather than at whatever partial load the site happens to demand. For data center temporary power applications, the EBOSS 220-125 offers a compelling advantage: battery-backed power with seamless diesel supplementation, providing both the reliability of a diesel generator and the instant response of battery storage during load transients.
The EBOSS 220-125 is our large-frame hybrid solution for major construction and data center projects. At 176 kW prime, it handles the same building-scale loads as our conventional SDG220S fleet — full HVAC systems, elevator banks, and multi-floor electrical distribution — but with the fuel and noise advantages unique to the EBOSS platform. We have deployed it on data center commissioning projects in Santa Clara and Fremont where the combination of reliable power delivery and reduced emissions was a project requirement.
Maintenance on the diesel engine follows the standard 250-hour oil change schedule for the John Deere 6068 platform. The 125 kWh LTO battery system requires minimal maintenance — periodic visual inspection of connections, cooling pathways, and battery management system status. The reduced diesel engine operating hours translate directly to lower fuel costs, fewer oil changes per calendar year, and reduced wear on engine components. For long-term deployments, the EBOSS 220-125 delivers a measurably lower total cost of ownership compared to running a conventional diesel generator on the same variable-load application.
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Tell us about the application — kW, voltage, application, install timeline — and we'll respond within one business day with budgetary pricing, lead time, and any sizing notes.
Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.
Estimate runtime on this tank
Estimated runtime
19.1 hours(0.8 days)
Fuel consumption ≈ 10.48 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.
Service intervals
Manufacturer-recommended intervals for the Airman EBOSS 220-125 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.
Oil & filter
Every 500 hours or 12 months
Air filter
Every 500 hours
Fuel filter
Every 500 hours
Major overhaul
≈ 20,000 hours
Common failure modes
What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.
Component
Symptom
Typical hours
Severity
Fuel filter
Clogging from contaminated or stale diesel causes hard starting and power loss — replace at 500-hour intervals or sooner if fuel quality is suspect
500+
minor
Starting battery
Capacity degradation during extended storage without a maintainer — test under load at every service visit and replace proactively at 36 months
4,380+
minor
Coolant hoses
Weeping at clamp points from thermal cycling — inspect during every oil change and replace at first sign of swelling or seepage
5,000+
minor
Frequently Asked Questions
What is the prime rating of the EBOSS 220-125?
The Airman EBOSS 220-125 delivers 176 kW prime / 194 kW standby at 60 Hz (220 kVA), combined with 125 kWh of Lithium Titanate Oxide battery storage. The 125 kWh battery bank can independently power significant loads for extended periods before the diesel engine needs to cycle on.
How does the EBOSS hybrid system work?
EBOSS (Energy Battery Optimized Smart System) combines the John Deere 6068 diesel generator with a 125 kWh LTO battery bank in a single integrated unit. Intelligent power management automatically runs on battery alone during light loads, blends diesel and battery during peaks, and recharges during optimal engine windows — always at the most fuel-efficient operating point. For data center applications, the battery bank provides instantaneous load response during diesel startup cycles.
What battery technology does the EBOSS use?
The EBOSS system uses Lithium Titanate Oxide (LTO) batteries — chosen for faster charging than conventional lithium-ion, longer cycle life rated for thousands of charge-discharge cycles, and reliable performance across a wide temperature range. At 125 kWh, the EBOSS 220-125 battery bank is substantial enough to carry major load swings without activating the diesel engine.
What is the fuel savings from the EBOSS 220-125?
Typical savings range from 30% to 70% compared to running a conventional diesel generator continuously. At the 176 kW scale, even a 30% reduction represents thousands of gallons of diesel saved over a multi-month deployment — a significant operational and environmental advantage for large construction and data center projects.
How loud is the EBOSS 220-125?
When operating on battery power alone, the EBOSS 220-125 produces virtually zero noise. When the John Deere 6068 cycles on for recharging, noise levels are comparable to the conventional SDG220S platform. The battery buffer enables scheduling diesel cycles outside noise-restricted hours, allowing 176 kW of temporary power to operate on noise-sensitive urban sites where a conventional generator at this scale would be prohibited.
What are the service intervals for the EBOSS 220-125?
The John Deere 6068 diesel engine requires oil and filter changes every 500 hours or 12 months (whichever comes first), air filter at 500 hours, fuel filter at 500 hours, and major overhaul at 20,000 hours. The LTO battery system requires inspection every 1,000 hours. Reduced diesel engine hours in hybrid operation extend calendar-time intervals between maintenance visits.
Who services Airman EBOSS generators in Northern California?
OnPoint Generators is the authorized Airman service provider for Northern California. We service the full EBOSS hybrid lineup including the EBOSS 220-125, covering both diesel engine maintenance and LTO battery system inspection.
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