Industrial Battery Charger & BMS Design

@macroenergy

I would approach this project in structured hardware, firmware, and validation stages: 1. **System Architecture:** Define the 24V/100Ah × 2 SLA battery system, maximum load current, charger input voltage, charging current range, communication interfaces, and protection requirements. 2. **Intelligent Charger:** Design a high-efficiency AC/DC charger with MCU-controlled Bulk, Absorption, and Float stages. Charging voltage/current will be temperature compensated, with OVP, OCP, SCP, reverse-polarity, and thermal protection. 3. **Battery Monitoring/BMS:** Monitor each 12V battery separately, total bank voltage, bidirectional current, battery temperatures, fuse status, charger status, and AC mains. MOSFET/contactor control can provide deep-discharge and battery-disconnect protection. 4. **Firmware:** Implement SLA-specific SOC/SOH algorithms using voltage, current integration, temperature, charge history, internal resistance trends, and runtime/load estimation. Alarms and battery replacement indicators will also be handled. 5. **Communication:** Add isolated RS485/Modbus RTU, Ethernet, dry contacts/relays, optional CAN/SNMP, OTA firmware update, and API/cloud communication for Decibel Web Portal/Android integration. Final deliverables will include schematic, PCB, Gerber, BOM, Pick & Place, complete firmware/source code, test reports, and manufacturing documentation.

@Adeel2k14

Hi, I am an Electronics Design Engineer specializing in power electronics, intelligent BMS, and mixed-signal hardware design. I can deliver a complete, production-ready 24V SLA intelligent charger and BMS tailored to your industrial specifications. I will handle schematic capture, PCB layout, Gerber generation, BOM optimization, and full firmware development (Modbus RTU, Ethernet, OTA, and portal integration). My background includes power converters, analog sensing, microcontrollers, and custom carrier board designs. You will receive complete hardware design files, source code, test reports, and full manufacturing support. Best regards, Muhammad Adeel

@sakshis576

With over 10 years of industry experience, I bring a deep understanding of electrical engineering and PCB design to the table. Your project for an intelligent battery charger and BMS demands multiple technicalities and careful evaluation, and my proficiency in Circuit Design, Electronics, Embedded Systems, PCB Design, and Layout make me an ideal candidate to meet your needs. I have a proven track record in designing robust systems for continuous industrial operations that meet stringent quality standards. My designs emphasize safety and reliability with extensive protections like over-voltage, over-current and short-circuit protection as well as reverse polarity protection aligned with your project scope.

@FranciscoSilvi

Hi There! As you can see in my portfolio on my profile, I have extensive experience designing PCBs and mass production equipment, just like you need. I can handle your project. I apologize for the simple proposal; I know you're probably tired of reading AI-generated proposals, and I'd rather not waste time on that. If you're interested in working with me, send me a message and we can work out the details! Best Regards!

@mahmoudralizadeh

Hi, I’m an embedded electronics engineer with strong experience in power electronics, battery monitoring, MCU firmware, PCB design, and industrial control systems. I can design the full solution from schematic to firmware for a 24V SLA charger and monitoring unit, including protections, RS485/Modbus, relay outputs, and reliable field-ready operation. My background includes STM32, ESP32, AVR, low-level debugging, Altium/KiCad PCB design, and industrial hardware bring-up. I focus on practical, production-oriented designs with clean documentation, testability, and stable long-term operation. For this project, I can help structure the architecture, define the charging and monitoring strategy, design the hardware, develop the firmware, and support prototype validation and manufacturing handoff. If you want, I can start by reviewing the exact requirements and proposing a clear milestone plan

@alluankit01

Hi, I can design the intelligent 24V SLA/VRLA battery charger and BMS solution for your 2 × 12V 100Ah industrial battery system, including schematic, PCB layout, firmware, communication interfaces, protection circuits, BOM, and manufacturing documentation. The best solution is to first finalize charging current, input supply, enclosure, cooling method, load profile, backup time, communication priority, and portal/API requirements. Then I’ll design the bulk/absorption/float charging logic, temperature compensation, individual battery monitoring, current sensing, SOC/SOH estimation, deep-discharge protection, fuse/disconnect detection, alarms, and charger health monitoring. I’m comfortable with battery charger design, SLA charging profiles, BMS architecture, embedded C/C++, RS485/Modbus RTU, Ethernet, CAN optional support, alarm relays, dry contacts, OTA planning, PCB layout, power protection, BOM selection, and industrial documentation. Deliverables will include: * Complete schematic design * PCB layout * Gerber files * BOM * Pick-and-place files * Firmware source code * Charging algorithm * Battery monitoring/protection logic * RS485/Modbus support * Alarm relay/dry contact outputs * Test procedure and reports * Manufacturing documentation I’ll focus on a reliable, production-ready design suitable for 24×7 industrial operation, with strong protection, clear diagnostics, and future integration support for your web portal and Android application. Best regards Ankit

@rfandelectronics

As an experienced engineer and a team leader at Radionica, I can assure you that we are well-equipped to deliver the comprehensive solution your industrial battery charger and BMS project demands. Our areas of expertise, from advanced electronics to high-frequency PCB design, make us a perfect fit for your intricate battery configuration. In fact, our specialization in designing intelligent and efficient chargers with temperature compensation will ensure a top-notch 24×7 operation that maximizes battery life. Monitoring and protection is essential for sustainable battery performance, and our skills in circuit design and electronics are indispensable for this aspect. We'll include individual battery voltage monitoring, total battery bank voltage monitoring, charge/discharge current monitoring, 'State of Health' and 'State of Charge' estimations among others. Guaranteeing uninterrupted power is crucial for you; consequently, our proficiency in RS485 / Modbus RTU, CAN Bus (optional), Ethernet Interface will facilitate efficient data communication and smooth problem diagnosis.

@soniaer987

Your 24V SLA charger with full BMS and cloud connectivity is a serious piece of industrial engineering, and I appreciate you sharing the complete scope. I've built similar power management systems, and I'm genuinely excited about the chance to help you bring this to production. Here's what I bring to this: → I've designed and shipped custom power electronics with multi-stage charging and protection — including a solar-powered, off-grid water vending machine that ran 24/7 in the Kalahari desert → I've delivered full-stack IoT products with cloud dashboards and remote monitoring — like the smart HVAC controller with RS485 and MQTT protocols → I can handle the entire stack: schematic, PCB layout, firmware, and the Modbus/Ethernet integration for the Decibel portal, all under one roof → I have an in-house lab with the test equipment to validate your charger and BMS before a single unit ships My approach: → First, a detailed design review of your battery bank and charging requirements, then a complete schematic and component selection → Second, PCB layout, firmware development for the BMS and charger logic, and integration with RS485/Modbus and cloud APIs → Third, a fully tested prototype with test reports, manufacturing files, and production support For this scope, the cost would be $12500. Happy to walk you through my approach and past work on a chat.

@anjalio22

I am interested in designing your production-ready 24V SLA/VRLA Battery Charger and BMS for continuous industrial operation. I can handle the complete development cycle, from architecture and circuit design through PCB, embedded firmware, testing, and manufacturing documentation. My approach will cover: • Intelligent 3-stage Bulk/Absorption/Float charging with configurable current and temperature compensation • Individual/total battery voltage, current, temperature, SOC, SOH and backup-time estimation • Protection for over-voltage, over-current, short circuit, reverse polarity, deep discharge and battery disconnection • AC failure, fuse, charger-health, low-battery and replacement monitoring • RS485/Modbus RTU, Ethernet, dry contacts/relays, with CAN/SNMP and cloud/API integration as required • Firmware architecture supporting OTA updates and Decibel Web Portal/Android integration I will deliver the complete schematic, optimized PCB layout, Gerbers, BOM, Pick & Place, firmware/source code, test reports, and manufacturing documentation, with production support. Give me one opportunity to handle your project. I assure you of accurate engineering, reliable implementation, thorough testing, and professional delivery.

@abuzars49

Hello, I have carefully reviewed your requirements for the 24V SLA battery charger and BMS. I am an Electrical Engineering student with hands-on experience developing an AI-powered EV Battery Management System using ESP32, INA219 current/voltage sensing, DS18B20 temperature monitoring, MOSFET-based charging control, SoC estimation, thermal protection and IoT/cloud monitoring. My relevant experience includes: • Battery voltage/current monitoring • Temperature monitoring and protection • SoC estimation • Charging control and cutoff logic • ESP32 embedded firmware • Sensor integration and communication • IoT/cloud monitoring • Embedded C/C++ development I am new to Freelancer.com, which is why my profile does not have ratings yet. The absence of stars is simply because I have not completed my first Freelancer project; it is not due to poor reviews or cancellations. I would be very interested in making this project my first completed project on the platform. I can work on the design systematically and provide clear documentation and source files. I am also comfortable discussing the architecture with you before implementation to make sure the charger, monitoring, protection and communication requirements are correctly defined.

@eternitech

Hi, New on Freelancer — 20 years of development experience behind us. We're taking our first few projects here at a fraction of our normal rate purely to build our review history. You get senior agency work at junior pricing; we get a review. Straight trade. Considering your 24V configuration with SLA/VRLA batteries, ensuring precise voltage regulation is crucial to avoid overcharging and extend battery life. I would start by designing a custom charging circuit tailored to this setup. Have you already selected the specific charging algorithm you want to implement?

@vikramec08

Hi i m based in noida and alredy have working experience on li-ion bms design for 48 volt rail for ATM ups application. The price is just a yentative becuase you are looking complete design so the final coat will be decided after having our meeting

@ostronik

Hi Greetings from OSTronik India! We are a technology-driven company specializing in Power Electronics and Embedded System Design integrated with Artificial Intelligence (AI), delivering reliable, industrial-grade Electronic Solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development (C & Python Programming), Hardware Design, Prototyping, and Scalable Mass Production with a focus on quality and cost efficiency. Core Expertise: • Microcontroller : PIC, STM32, ESP Family, AVR, Nuvoton, XBee. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, Keil, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code. • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer, KiCad, with efficient power design, isolation handling, and EMI/EMC compliance. • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485, RS-232. • RF Modules: LoRa, nRF Series, XBee, Laird RF Modules. Project Capabilities: Power Monitoring & Energy Management Units, CNC Controllers, BLDC/DC Motor Control, IoT-based Agriculture, Smart Home & Industrial Automation, Inverters, Stabilizers, and Gimbal-based Videography Control Systems. We have already transformed the concept into a successful Electronic solution for multiple clients. To help you better visualise our expertise, we would be glad to share a brief reference video. Let’s schedule a meeting to discuss further. Best Regards, Team OSTronik India

@dhineshk32

I am writing to express my enthusiastic interest in designing your production-ready 24V, 100Ah Sealed Lead Acid (SLA/VRLA) Intelligent Battery Charger and BMS. With deep foundational expertise in power electronics, embedded firmware development, and industrial IoT connectivity, I am fully equipped to deliver the complete hardware, firmware, and cloud-integration package outlined in your scope of work. As a dedicated engineering partner entering this project at a competitive cost of $0 (Pro Bono / Pilot Collaboration Phase), my goal is to prove my technical execution capabilities, deliver an exceptional enterprise-grade design matching the Decibel ecosystem, and establish a long-term partnership for your future manufacturing runs.

@therealmrmak

Hello, I have reviewed your requirements for the 24V 100Ah SLA Battery Charger and BMS and I’m very interested in taking on this project. I can work on the intelligent charger, battery voltage/current/temperature monitoring, SOC/SOH estimation, protection functions, alarms, and RS485/Modbus, CAN and Ethernet integration. I will focus on a reliable, production-oriented design suitable for continuous industrial operation. I can provide schematics, component selection, PCB design support, firmware/control logic, communication implementation and testing documentation. I’m ready to discuss the detailed specifications and start immediately. I’d be glad to help turn this into a reliable working system.

@ElectronicsMust

With over a decade in electronics development and a solid track record of delivering cutting-edge solutions, I'm confident that I am the highly proficient freelancer you need for this industrial battery charger and BMS project. Not only do I possess a deep understanding of your design requirements, but I have an extensive experience in high-current hardware, power management, and battery systems - which are crucial to developing an efficient and reliable solution for your 24V SLA batteries. As a seasoned professional, I always provide end-to-end support to my clients, and this project is no exception. From complete schematic designs to firmware development and manufacturing support, rest assured that I will deliver everything you need to successfully produce this battery charger and BMS. Beyond my technical skills lies a commitment to client satisfaction. Hence,I won't just disappear after the first prototype. Also,directly working with clients is something that truly excites me as it affords me the opportunity to stay actively involved throughout the project. This collaborative approach significantly reduces errors and allows us to find more innovative solutions together. So why settle for less when you can experience the excellence? Hire me today for a streamlined industrial battery charger & BMS design process!