February 2026 | Tips & Information
Trusted Nuclear Batteries for Security Contractors
National security and defense systems increasingly operate in environments where maintenance access is limited, replacement is impractical, and failure is not an option. As mission timelines extend and deployment conditions become more demanding, power reliability has become a core system-level consideration.
For these applications, long-life nuclear batteries are gaining attention as a viable alternative to conventional power sources. City Labs develops nuclear NanoTritium™ battery technology for systems that require predictable, maintenance-free power over extended operational lifetimes.
Why Security Contractors Are Rethinking Long-Life Power Sources
Power strategy decisions are no longer driven solely by unit cost or component availability. Security contractors are increasingly evaluating power sources based on lifecycle risk, operational burden, and long-term system performance, particularly in national defense applications.
Where Conventional Batteries Break Down
Traditional chemical batteries perform well in many commercial systems, but they introduce meaningful constraints in mission-critical security environments. Common challenges include:
- A finite service life that requires scheduled replacement or maintenance access
- Performance degradation under temperature extremes or harsh conditions
- Logistical burden for distributed, embedded, or remote deployments
- Rising lifecycle costs driven by labor, downtime, and replacement inventory
For programs operating at scale in environments with restricted access, these limitations can shift battery management from a routine maintenance task to a program-level liability.
Nuclear Batteries Deliver Predictable, Long-Life Power
Nuclear batteries generate electrical power through the controlled decay of a radioisotope rather than through a chemical reaction. They produce a steady, low-level output over many years without moving parts or active management.
Nuclear batteries have unique advantages for national security applications, including:
- Continuous power generation measured in decades, not months
- Stable output independent of environmental conditions
- No recharge cycles or replacement schedules
- Flexible design for low-power devices such as sensors and monitoring systems
Betavoltaics Are Different from RTGs and Chemical Batteries
Not all nuclear power technologies have the same characteristics. Betavoltaic batteries occupy a distinct niche that aligns closely with security and defense system requirements.
Unlike radioisotope thermoelectric generators (RTGs), betavoltaics produce minimal heat and are optimized for compact, low-power applications rather than high-wattage generation. And unlike chemical batteries, they do not rely on stored charge that depletes over time, eliminating the need for replacement cycles.
From a system architecture perspective, this enables “design once, deploy once” approaches that reduce long-term maintenance risk and simplify lifecycle planning.
Proven, Safe, and Compliant Power for Mission-Critical Environments
Adopting a new power technology ultimately comes down to risk management. Power systems must meet reliability, safety, and compliance expectations simultaneously to support qualification, deployment approval, and long-term sustainment in mission-critical environments.
Validated for Long-Haul Operation
Systems deployed in remote or denied environments are often required to operate continuously for years without scheduled maintenance or battery replacement, shifting validation priorities toward uptime, failure modes, and sustainment risk.
City Labs produces NanoTritium™ batteries with these operational demands in mind, emphasizing long-duration performance, output stability, and behavior under defense-relevant environmental conditions so power can be treated as a stable design input during system qualification rather than a consumable component.
Safety and Containment by Design
Safety is a fundamental design and regulatory requirement for nuclear systems intended for use near personnel or sensitive infrastructure. NanoTritium™ batteries are engineered to meet U.S. Nuclear Regulatory Commission (NRC) generally licensed device standards, enabling deployment without specialized nuclear handling credentials.
Safety is achieved through multiple independent containment layers. The tritium is immobilized in a solid-state metal hydride and enclosed in a hermetically sealed package. The device operates via very low-energy beta decay, which cannot penetrate the enclosure or human skin. This combination of material stability, physical containment, and low-energy emission defines the safety profile of NanoTritium™ power systems.
Integration Flexibility Across Defense and Security Systems
Even the most reliable power source must integrate cleanly into an existing system architecture. Most national defense and security platforms are constrained by SWaP—size, weight, and power—as well as fixed interfaces, enclosure limitations, and qualification requirements. Power solutions that force significant redesign or introduce interface uncertainty can create program risk rather than reduce it.
City Labs works with contractors to align battery geometry and electrical characteristics with system-level requirements, helping streamline design and qualification. Predictable, continuous power simplifies system modeling, interface control, and validation planning by eliminating edge cases associated with voltage drop, end-of-life behavior, or replacement-driven downtime. This integration flexibility supports a range of applications where post-deployment access is limited, including:
- Remote sensing and monitoring systems
- Secure or unattended communications nodes
- Embedded security and surveillance platforms
- Long-duration infrastructure monitoring
In these environments, long-life nuclear batteries enable system architectures designed for extended operation without service intervention.
Cost, ROI, and Lifecycle Advantages Over Traditional Batteries
City Labs’ NanoTritium™ batteries offer five clear lifecycle advantages for long-duration defense and security systems:
- Elimination of replacement cycles
- Lower sustainment and maintenance burden
- Reduced operational risk
- Improved total cost of ownership (TCO)
- Stronger program differentiation
Evaluated at the program level, NanoTritium™ power sources are defined by their impact on sustainment, reliability, and operational continuity over time.
Frequently Asked Questions
Are nuclear batteries safe to use in defense and security applications?
Yes. NanoTritium™ batteries are engineered to meet U.S. NRC general-licensed device requirements, enabling use without specialized nuclear handling credentials. Safety is achieved through solid-state tritium immobilized in a metal hydride, hermetically sealed containment, and low-energy beta decay fully contained within the device housing.
How long do nuclear batteries last compared to conventional batteries?
NanoTritium™ batteries generate continuous power through radioisotope decay, enabling operational lifetimes measured in decades rather than months or years.
What configuration options are available for defense and security systems?
NanoTritium™ batteries are available in standardized configurations, including the P100a and P100b packages, designed to align with common defense and security system requirements. Custom geometries may be designed based on additional licensing, qualification, and engineering considerations.
How do disposal and end-of-life management work?
End-of-life handling follows established regulatory guidelines and is documented in City Labs’ product user manuals.
What testing or validation supports contractor use?
NanoTritium™ batteries are evaluated for long-duration operation, output stability, and performance under defense-relevant environmental conditions.
When does a nuclear battery make more financial sense than traditional power solutions?
Nuclear batteries deliver the greatest value in long-duration, unattended systems where replacement, maintenance access, or downtime drive lifecycle costs and risks.
Why City Labs Is a Trusted Partner for Nuclear Batteries
Defense contractors need more than a component supplier; they need a partner that understands qualification risk, integration constraints, and long-term sustainment requirements.
City Labs brings decades of experience developing NanoTritium™ nuclear batteries for mission-critical environments, with an emphasis on validation, safety-by-design, and system-level integration—supporting predictable, long-haul performance without introducing downstream program risk.
Evaluating long-duration power options? Contact our team to explore how NanoTritium™ batteries can enable reliable, maintenance-free operation throughout the lifecycle of your program.
