Precision-engineered battery solutions for oil & gas, medical, industrial, and defense — built to perform where reliability is non-negotiable.
Oil & Gas 
Hazardous Environments 
Industrial 
Medical Devices 
Smart Monitoring From custom design and engineering to manufacturing and global delivery — Excell Battery provides the complete lifecycle of battery development for the world's most demanding applications.
With production facilities across North America, Europe, and Asia — backed by Ultralife Corporation — Excell Battery delivers supply chain resilience and geographic flexibility for OEMs worldwide.
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We engineer, design, manufacture, and support custom battery packs tailored to your exact application — from concept through production and end-of-life recycling.
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Industry-leading battery monitoring systems and SBS-compliant safety circuits — purpose-built hardware and intuitive software for the most reliable, repeatable data in the field.
Technical ResourcesEngineered battery solutions across chemistries, form factors, and performance envelopes — from extreme-temperature downhole packs to smart medical device batteries.
Rechargeable Custom Li-ion and LiFePO4 rechargeable packs engineered for robotics, medical devices, industrial instrumentation, and small EV applications.
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Downhole High-temperature, high-pressure lithium battery systems purpose-designed for measurement-while-drilling and logging-while-drilling operations.
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Medical Precision-engineered battery packs with integrated BMS for portable medical equipment — designed to meet stringent safety and regulatory standards.
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HAZLOC / ATEX ATEX and HAZLOC certified battery solutions built for explosive and hazardous environments in oil & gas, mining, and chemical processing industries.
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Smart Systems Intelligent charging systems and modular battery architectures that maximize performance, extend cycle life, and enable real-time data monitoring.
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Primary High-energy-density primary lithium batteries for long-life, low-maintenance applications — ideal for remote sensing, surveillance, and pipeline inspection.
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As part of Ultralife Corporation, Excell Battery combines the agility of a specialized manufacturer with the financial strength and global reach of an established international company — ensuring uninterrupted supply even during localized disruptions.
We engineer batteries that meet your operational, regulatory, and environmental requirements — factoring in sustainability from day one of the design process.
Every battery we manufacture is designed to perform its intended function while maintaining consistent quality and safety throughout its full expected service life.
Our team of battery engineers works alongside your team from initial specification through prototype, validation, and full-scale production — providing true application expertise.
White papers, case studies, training videos, and engineering guides — developed by our battery specialists to help you make smarter power decisions.
Case Study 
Article Case Study 
Guide Guide Whitepaper 
Webinar Training Guide We source premium cells exclusively from globally recognized, audited manufacturers — ensuring consistent quality, traceability, and performance in every battery pack we build.
Our batteries are manufactured under rigorous quality management systems and certified by internationally recognized accreditation bodies — giving global OEMs the confidence to specify Excell Battery in their most critical applications.
