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Custom OEM Battery Solutions
AJ Power designs and manufactures custom lithium battery packs and power systems built to your exact specifications — form factor, chemistry, BMS logic, branding, and certifications. From prototype to mass production.
Why Choose AJ Power OEM
AJ Power's custom OEM battery solutions are designed for environments that demand uncompromising reliability. Our engineers work directly with your R&D team to understand your application, environment, size constraints, and performance targets — then design a battery system that fits perfectly, first time.
Core Capabilities
Full mechanical and electrical design service. We work with your dimensional constraints and output specs to engineer the optimal cell configuration, housing, and connector layout.
Custom battery management system development with your SOC algorithm, protection thresholds, communication protocol (CAN, SMBus, RS485, I²C), and UI display logic.
Every prototype goes through cycle life, thermal abuse, vibration, shock, and safety testing per IEC/UN standards. We deliver full test reports before production approval.
We guide your product through CE, UL 1973, UN38.3, IEC 62133, FCC, and RoHS certification processes — managing test labs, documentation, and regulatory submissions.
From 50-unit pilot runs to 100,000+ annual volumes. Our production lines are ISO 9001 certified with automated cell matching, weld inspection, and traceability systems.
Ongoing technical support, field failure analysis, BMS firmware updates, and engineering change management throughout your product lifecycle.
Product Categories
Technical Parameters
Project Workflow
Submit your application brief, dimensional constraints, voltage and capacity targets, and regulatory requirements. Our engineering team reviews and responds with a feasibility assessment within 24 hours.
Day 1–2Our engineers develop a detailed technical proposal including cell selection, BMS architecture, mechanical drawings, and a fixed-price quotation with project timeline.
Day 3–7First-article prototypes are built, subjected to full electrical and safety testing, and shipped to you for validation. We iterate until you are fully satisfied — typically 1–2 revision cycles.
Day 15–30We coordinate third-party testing labs for required certifications, manage all documentation, and submit golden samples for your final design approval.
Day 30–60Production commences with 100% electrical testing on every unit, automated weld inspection, and full traceability. Delivery by sea or air with full export documentation and customs support.
Day 45–90
Case Study
A European medical device manufacturer needed a 24V / 20Ah LiFePO4 battery pack to replace their aging NiMH system. Requirements included IP54 ingress protection, SMBus communication, and IEC 62133 certification — all in a package 40% smaller than their existing unit.
AJ Power delivered a certified, production-ready solution in 52 days. The new battery pack extended device runtime by 65% while reducing total weight by 1.8kg.
Working with AJ Power's OEM team felt like having an extension of our own engineering department. They understood our constraints immediately, proposed a better architecture than we had specified, and delivered a certified product weeks ahead of our internal timeline.
Begin Your Project
Tell us your application requirements for a custom OEM battery solution — including voltage, capacity, size, certifications needed, and target volume. Our engineering team will respond with a technical assessment and quote within 24 hours.
NDA available · Engineering response within 24 hours · MOQ from 50 units