End-to-end custom battery pack development for OEM applications — combining cell selection, electrical BMS integration, safety compliance, and volume manufacturing.
Excell Battery provides a complete lifecycle approach to custom battery design. Backed by over 40 years of engineering experience and key partnerships with the world's leading cell chemistry manufacturers, we design, build, test, and recycle high-reliability battery systems tailored to your exact operational and environmental requirements.
Selecting the right energy storage architecture starts with a comprehensive evaluation of your device's operational profile. Our senior application engineers collaborate with your technical team to define key mechanical, electrical, and environmental boundaries.
We guide global procurement and engineering teams through complex regulatory standards, thermal management constraints, voltage envelopes, and stringent shipping container regulations early in the design cycle to avoid costly redesigns.
High-performance battery systems require specialized electronics to ensure maximum uptime and safety. Excell Battery's dedicated R&D engineering centers leverage over 40 years of power circuit design, firmware programming, and battery management system (BMS) integration expertise.
From SMBus, CANbus, and I2C smart monitoring protocols to SBS-compliant fuel gauging and active cell balancing, our engineers deliver custom hardware and software solutions that reduce total cost of ownership (TCO) through superior reliability.
Unlike single-brand pack assemblers, Excell Battery maintains a strictly chemistry-agnostic approach. We source tier-one lithium-ion (Li-ion), lithium iron phosphate (LiFePO4), and primary lithium cells (Li-SOCl2, Li-MnO2) directly from top-grade global suppliers. Every cell batch undergoes rigorous verification in our internal testing labs under simulated field stress to confirm capacity, thermal stability, and cycle life prior to production integration.



















Excell Battery operates production facilities across North America equipped with automated spot welding, certified IPC-A-610 soldering operators, computerized battery analyzers, and climate-controlled assembly lines. Multiple production sites mitigate geopolitical and regional supply risks while streamlining international logistics.
Dual-region manufacturing footprint ensures continuous delivery, buffer stock flexibility, and reduced exposure to supply disruptions.
Every production batch is tested for impedance, voltage tolerance, weld integrity, protection circuit actuation, and thermal behavior.
Complete component-level lot tracking from raw cell ingestion to finished assembly packaging for stringent OEM record-keeping.
Because lithium batteries store high energy density in compact packages, compliance with global safety standards is paramount. Excell Battery manages the complete regulatory verification pathway for client packs.
We build custom battery packs to conform with ATEX/HAZLOC explosive environment standards, UL 1642 / UL 2054 standards, IEC 62133 medical equipment mandates, and mandatory UN 38.3 lithium transport safety testing.
Excell Battery provides a certified end-of-life battery recycling and reverse logistics program for all registered OEM clients. We facilitate environmentally responsible disposal and element reclamation in full compliance with local and international environmental protection standards.
Manufactured under strict ISO 9001 certified procedures and validated by global accreditation agencies for absolute operational reliability in critical infrastructure.
Connect directly with our custom battery engineers to discuss your voltage, capacity, thermal, and regulatory requirements.