City Labs
City Labs is a Florida-based private manufacturer of tritium betavoltaic batteries (NanoTritium™) providing 20+ year maintenance-free power for microelectronics, serving aerospace, defense, and medical implant customers including NASA, the U.S. Air Force, and BIOTRONIK.
- Company typePrivate
- Founded2008
- HeadquartersHomestead, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What City Labs does
City Labs, Inc. is a privately held Florida-based corporation and minority-owned manufacturer of tritium betavoltaic batteries under the NanoTritium™ brand. Founded in 2005 and headquartered in Miami, the company is the sole holder of the nation's only commercial Product Regulatory General License for betavoltaic battery manufacturing, sale, and distribution, granted in 2012. Its core technology converts beta particles emitted by the natural radioactive decay of tritium (hydrogen-3) into electricity through a proprietary semiconductor architecture, producing continuous, maintenance-free power for 20+ years without charging or replacement across an operational temperature range of -55°C to +150°C.
The company's product portfolio includes the P100 Series (commercial since 2008), the P200 Series (next-generation, under development), Nanowatt batteries, and 100 Microwatt batteries, all targeting low-power microelectronic applications. Customers span space and aerospace (NASA, lunar surface sensors, small satellites), defense and national security (U.S. Air Force, DARPA, Lockheed Martin, Boeing), medical devices (BIOTRONIK leadless pacemakers), structural monitoring, deep-sea operations, and oil/gas drilling. The go-to-market is enterprise field sales with project-specific proposals, custom co-development with customer design teams, and direct sales rather than self-serve purchasing. Revenue is generated through hardware sales of battery units and government research contracts, primarily SBIR awards from agencies including AFWERX, DARPA, NIH, and the U.S. Air Force Research Laboratory.
City Labs monetizes through quote-based, multi-year enterprise contracts and non-dilutive government funding. Its customer base is concentrated in U.S. federal agencies and defense primes, with notable relationships including a $1.5M DARPA Rads to Watts contract (May 2026), a $1.25M AFWERX SBIR Phase II contract (July 2024), and an NHLBI/NIH Commercialization Readiness Pilot award with BIOTRONIK for leadless pacemaker development (November 2024). The company operates with 1-10 employees and has not disclosed revenue, venture capital funding, or institutional investment. Its competitive position rests on regulatory exclusivity, patented semiconductor architecture, and decades of empirical validation through P100 field deployments since 2008.
City Labs firmographics
Firmographics- Name
- City Labs
- Legal name
- City Labs, Inc.
- Website
- https://citylabs.net
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- City Labs is a Florida-based private manufacturer of tritium betavoltaic batteries (NanoTritium™) providing 20+ year maintenance-free power for microelectronics, serving aerospace, defense, and medical implant customers including NASA, the U.S. Air Force, and BIOTRONIK.
- Ownership category
- akta.pro rank
City Labs industry classification
Industry- Product category
- Betavoltaic Nuclear Batteries
- NAICS
- Battery Manufacturing (33591), Battery Manufacturing (335910)
- SIC
- Electrical Industrial Apparatus (3620), Electronic & Other Electrical Equipment (No Computer Equip) (3600)
- akta.pro primary industry
- Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH) (IMAGAHAA)
- akta.pro secondary industries
- Battery Pack Manufacturing & Module Assembly (EUAFABAI), Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB), Space Power Systems (Solar Arrays, Batteries, EPS) (IMABACAH)
Keywords
Where City Labs is headquartered
LocationHeadquarters
- HQ city
- Homestead
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
City Labs business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel
Revenue model
- Nuclear Battery Products: Sale of NanoTritium™ betavoltaic batteries for low-power microelectronic applications including P100 and P200 series, targeting aerospace, defense, medical, and industrial markets
- Government Research Contracts: SBIR and other government contracts with DARPA, AFWERX, Air Force, and NIH funding specific technology development projects
- Custom Battery Solutions: Tailored power solutions working directly with customer design teams, including regulatory compliance management
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom enterprise solutions - pricing determined by specific project requirements |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
City Labs product offering
Product offeringCore offering
City Labs manufactures NanoTritium™ betavoltaic batteries that convert beta particles from tritium radioactive decay into electricity through proprietary semiconductor architecture, delivering continuous power for 20+ years without charging or replacement. The company sells P100 Series, P200 Series, nanowatt, and 100 microwatt battery variants for low-power microelectronic applications in aerospace, defense, medical implants, and industrial markets, and also develops custom power solutions collaboratively with customer engineering teams.
Product overview
City Labs offers a unified portfolio of NanoTritium™ betavoltaic nuclear batteries for low-power microelectronic applications. The product line spans the P100 Series (original commercial product since 2008), the P200 Series (next-generation successor under development), Nanowatt Batteries (ultra-low power), and Microwatt Batteries (100 microwatt). All products share the same core tritium betavoltaic technology platform, differing primarily in power output levels and form factor customization to serve applications ranging from medical implants to space systems.
Differentiator
Problem solved
Functional benefit
Brands
- NanoTritium™: Proprietary tritium betavoltaic battery technology that converts beta particles from tritium decay into electricity, providing continuous power for 20+ years for low-power microelectronic applications.
Products and services
- NanoTritium™ P100 Series Battery The original NanoTritium™ betavoltaic battery series, providing continuous power for 20+ years via tritium beta decay for microelectronic devices.
- NanoTritium™ P200 Series Battery Next-generation betavoltaic battery and direct successor to the P100 line, optimized for increased power output and extended longevity, currently under development.
- Nanowatt Batteries NanoTritium™ batteries providing power output in the nanowatt range for extremely low-power microelectronic applications requiring minimal energy over extended periods.
- 100 Microwatt Battery NanoTritium™ betavoltaic power source providing approximately 100 microwatts of continuous power for twenty years or more for microelectronic platforms including environmental pressure and temperature sensors.
Quantifiable outcome
- Batteries continue operating after 20 years of continuous use, outputting approximately 33% of original power (e.g., 10µW initial dropping to ~3.219µW after 20 years)
- +2 more outcomes
Companies that use City Labs
Customer profileNamed customers6 records
Segments6 records
Ideal customer profiles4 records
City Labs technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
City Labs partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core, major and minor.
- BIOTRONIKcoreCollaboration on leadless pacemaker betavoltaic power source development. NHLBI CRP award supports advancement of nuclear-powered pacemaker technology with scalable fabrication techniques for pre-clinical testing.
- NASAcoreCity Labs delivered a next-generation tritium-based space power source prototype to NASA in June 2023 for lunar surface sensors and future space missions. Ongoing collaboration for micropower solutions for space-based applications.
- United States Air ForcecoreMultiple contracts including Air Force SBIR Phase I for nuclear ion engine development and Phase II $1.25M contract for radioisotope-powered ion engines for small satellites. Development of advanced propulsion technology.
- BoeingmajorPartner organization utilizing City Labs' NanoTritium™ batteries for aerospace and defense applications.
- Lockheed MartinmajorLockheed Martin conducted third-party testing of P100 Series NanoTritium™ batteries, confirming extreme temperature resistance. Active collaboration on defense applications.
- DARPAcore$1.5M contract awarded May 2026 under Rads to Watts (R2W) program for development of next-generation nuclear battery technology.
- University of MichiganminorCollaboration on Michigan Micro Mote (M3) project; City Labs betavoltaic batteries powering temperature sensors. NIH subcontract for voltage down converter development.
- Lawrence Livermore National LaboratoryminorPartnership with home of National Ignition Facility to stay at forefront of nuclear energy research and incorporate breakthroughs into tritium battery products.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
City Labs competitors and assessment
Company assessmentDirect peers
- Widetronix: Ithaca, NY-based developer of betavoltaic and other long-life nuclear microbatteries. Most direct competitor to City Labs in tritium-based betavoltaic power sources for low-power microelectronics.
- Qynergy: Albuquerque-based company commercializing betavoltaic batteries using radioactive isotopes for long-life wireless sensor and remote applications. Comparable to City Labs in core technology and target use cases.
- BetaBatt: Early betavoltaic battery developer (now largely inactive) historically focused on tritium-based nuclear microbatteries. Provides a historical peer reference for the same product category City Labs now leads commercially.
Broad incumbents
- Teledyne Technologies: Large diversified industrial conglomerate with nuclear/radioisotope power systems and imaging divisions. Incumbent serving the same space/defense customers with broader (much larger) power solutions.
- Curtiss-Wright (Nuclear / Defense): Established supplier of nuclear reactor systems, radioisotope power systems, and defense electronics. Operates in the same defense/space customer ecosystem with broader capability than City Labs' betavoltaic niche.
- Ultralife Corporation: Public company making lithium and other specialty batteries for military, medical, and industrial markets. Overlaps with City Labs in defense and medical battery customers but with mainstream chemistries.
- EnerSys: Global industrial battery manufacturer serving aerospace, defense, medical, and industrial customers. Comparable in target verticals but focused on conventional chemistries rather than betavoltaic technology.
- Microchip Technology: Major low-power microcontroller and analog semiconductor vendor whose products are commonly designed into the same microelectronic sensor platforms City Labs' batteries power. Ecosystem partner with overlapping end-customer design teams.
Others
- Medtronic: World's largest medical device company with established leadless pacemaker (Micra) franchise. Adjacent competitor/partner for any implantable power-source relationship and reference for clinical/regulatory scale.
- Lawrence Livermore National Laboratory: National lab partner of City Labs in tritium and nuclear energy research. Not a commercial competitor, but adjacent ecosystem participant shaping the broader betavoltaic/nuclear power technology landscape.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
City Labs social profiles
Digital presenceCity Labs compliance and trust
Trust signalCompliance1 record
City Labs financial estimates
Financial estimateRevenue estimate
Valuation estimate
City Labs leadership team
Management profileNumber of profiles
Profiles1 record
City Labs funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
City Labs M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about City Labs
What does City Labs do?
City Labs manufactures NanoTritium™ betavoltaic batteries that convert beta particles from tritium radioactive decay into electricity through proprietary semiconductor architecture, delivering continuous power for 20+ years without charging or replacement. The company sells P100 Series, P200 Series, nanowatt, and 100 microwatt battery variants for low-power microelectronic applications in aerospace, defense, medical implants, and industrial markets, and also develops custom power solutions collaboratively with customer engineering teams.
Is City Labs a public or private company?
City Labs is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was City Labs founded?
City Labs was founded in 2008. It employs 1 to 10 people.
Where is City Labs based?
City Labs is headquartered in Homestead, United States, in the North America region.
How does City Labs make money?
Three revenue lines are on record. Nuclear Battery Products are the primary driver. The others are government Research Contracts and custom Battery Solutions.
Who are City Labs's main competitors?
Direct peers on record are Widetronix, Qynergy and BetaBatt. Broad incumbents are Teledyne Technologies, Curtiss-Wright (Nuclear / Defense), Ultralife Corporation, EnerSys and Microchip Technology. Others are Medtronic and Lawrence Livermore National Laboratory.
Does City Labs have an API?
No public API is recorded for City Labs.
What industry is City Labs in?
City Labs's product category is Betavoltaic Nuclear Batteries. Its primary akta.pro industry code is IMAGAHAA, Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH), with a secondary code of EUAFABAI, Battery Pack Manufacturing & Module Assembly. Its NAICS code is 33591 and its SIC code is 3620.