Dongguan Everwin Tech Co., Limited

Built for Power, Engineered for Longevity In today’s fast-evolving energy world, stability, safety, and scalability are no longer optional—they’re essential. This LiFePO4 energy storage cabinet, built by EWT Battery, embodies these principles through high-end materials, intelligent functionality, refined craftsmanship, and industrial-grade production standards. Product Model Shown: 51.2V 280Ah (14.3kWh) LiFePO4 chemistry with intelligent BMS 1. Premium Materials Cell Composition: Uses Grade A prismatic LiFePO4 cells, rigorously matched for internal resistance and capacity. Shell: Powder-coated steel cabinet with anti-corrosion coating, IP54 protection grade. Connectors & Terminals: Copper alloy terminals with anti-oxidation plating ensure strong conductivity and safe high-current flow. Internal Structure: Reinforced anti-vibration brackets and flame-retardant insulation inside. 2. Core Functions & Features High Safety BMS: Integrated smart Battery Management System supports real-time monitoring (voltage, temperature, SOC, protection alarms). LCD Display Panel: Allows users to view battery status and fault codes on site. Parallel/Series Capability: Supports system expansion for residential, commercial, and small industrial energy storage. Smart Compatibility: Ready for hybrid inverters; compatible with most leading brands in the market. 3. Refined Craftsmanship Each pack is assembled in a dust-free line, with automated spot welding and torque-calibrated assembly. Aging tests are conducted for 48 hours under high and low temperature cycles to ensure reliability in real-world conditions. Customized packaging and safety foam used to protect every unit during transportation. Supports branding with OEM/ODM cabinet design, label and logo printing.  Battery units ready for global shipment Factory Strength Over 3,000㎡ of factory floor with independent R&D and assembly workshops Monthly capacity: 10,000+ units of energy storage batteries Certifications: UN38.3, MSDS, CE, IEC62619, UL-compliant cell sources Engineering team with 8+ years experience in solar battery systems At EWT, we believe a storage system should not only deliver energy, but stand for consistency, quality, and long-term value. This is how we build it—step by step.

We don’t just sell batteries—we engineer them from the inside out. Behind every customized NiMH or LiFePO4 battery pack we deliver lies a full chain of precision manufacturing, cross-team collaboration, and strict quality assurance. Here's a closer look at how we make it happen. A Streamlined Assembly Line with Precision in Every Step Our production line is equipped for efficient battery pack assembly, supporting multiple cell formats and battery chemistries—from NiMH to LiFePO4 and Li-SOCl₂. Every pack goes through: Spot welding, insulation wrapping, and smart BMS integration Capacity sorting & balancing Barcode & serial tracking for quality traceability 100% testing before delivery (voltage, internal resistance, safety) Whether for industrial meters, solar systems or IoT devices, our batteries are built to match real-world demands. From Requirements to Realization – Our Office Team Makes It Work In this workspace, our R&D engineers and sales coordinators work closely to understand each client's unique needs. Here’s how they contribute: Design custom pack configurations (voltage, size, output, protection) Ensure electrical safety and BMS compatibility Coordinate sampling, certification, and production planning Offer multilingual support for global clients With both technical know-how and business experience, this team ensures every project moves from concept to delivery smoothly. Reliable Communication and Support Throughout the Project Our service team follows each order through the entire lifecycle—from inquiry to post-delivery support. With quick response times and clear communication, we help clients: Track production progress and lead times Resolve technical or shipping issues swiftly Plan future orders based on feedback and usage data Build long-term trust through consistent service For us, a battery is not just a product—it's a long-term commitment to quality, performance, and partnership. Ready to Customize Your Next Battery Solution? From assembly line to engineer’s desk to support inbox, every part of our operation is geared toward one thing: helping you power your application with safety and confidence.

A Case Study in Custom Cell Development & Assembly Craftsmanship In this project, we delivered two core battery solutions—NiMH rechargeable batteries and Li-SOCl₂ primary lithium batteries—tailored for clients requiring long-lasting, stable, and high-performance power sources across industrial environments. But beyond product delivery, this case reflects our deep engineering strength and flexible manufacturing capabilities in cell customization, battery assembly, and design integration. 01 | Custom NiMH Battery Packs — Designed for Real-World Durability Our NiMH production line supports a wide range of cylindrical cell sizes, from 2/3AA to D type, with the ability to customize voltage, capacity, and assembly structure. In this case, we: Selected high-drain NiMH cells with enhanced cycle stability (800+ cycles) Designed tab-connected and shrink-packed battery packs with precise polarity control Integrated spot-welded nickel strips, PVC wrapping, and custom wire leads for seamless plug-and-play installation Applied triple-layer quality control, including capacity sorting, internal resistance testing, and simulated load tests Our packs are widely compatible with handheld devices, medical tools, and consumer electronics—where reliability and safety matter most. 02 | Advanced Li-SOCl₂ Batteries — Built for Long-Term Field Deployment Lithium Thionyl Chloride (Li-SOCl₂) batteries demand precision—from material purity to sealing technique. For this batch, we produced ER14250 and ER18505 models, focusing on extreme consistency in output and long-term shelf stability. What sets our process apart: All cells are vacuum-sealed using laser welding to ensure absolute airtightness We utilize high-purity thionyl chloride, combined with spiral-wound cathode construction, enabling energy density up to 700Wh/kg Each battery undergoes ultra-low leakage current testing (