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I need a skilled engineer to design a PCB and software for a portable device that converts DC 24V to 240V. The device should have an integrated battery charger and a Battery Management System (BMS) for LiFePO4 batteries. Key requirements: - 2kw output peak 4kw - Low battery alert - Re-charge from 240/110v (50/60hz) - Solar input 200w max - External battery - Onboard BMS - 24v battery input (lifopo4) - Adjustable recharge rate from mains, 3kw max (when using 240v) 1.5kw max on 110v - LCD screen for displaying: o SOC o Time to empty o Time to full charge o Current output o Current input - Bluetooth for o Future use o Firmware updates Ideal skills and experience: - Expertise in PCB design - Experience with power electronics and converters - Proficient in developing BMS - Background in software development for embedded systems - Knowledge of LiFePO4 battery systems Please provide relevant work experience and a portfolio.
Project ID: 39752938
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51 freelancers are bidding on average £509 GBP for this job

As an accomplished Electrical Engineer specialized in Embedded Systems, I bring a wealth of expertise in circuit design, signal processing, and power electronics that aligns seamlessly with the requirements of your project. My extensive background in developing Battery Management Systems (BMS) will prove invaluable to integrating a sophisticated LiFePO4 system into your device. Additionally, my skills in PCB design using tools such as Eagle, Target, and Kicad ensure that I can create innovative, high-quality designs precisely tailored to your needs. With a deep understanding of microcontrollers including Raspberry Pi and STM32 as well as broad-based programming abilities, I possess the unique advantage of being able to both design the hardware for your converter system and develop the accompanying software. Having worked on several converter projects rendering 2kW to 4kW output peak capabilities, I am confident in my ability to deliver on this aspect. Lastly, my proven track record in integrating Bluetooth technology and implementing firmware updates round off my credentials toward meeting your project's present and future demands. With me, you receive more than just technical skills; you get a seasoned problem solver who loves pushing boundaries. Let me prove that by designing for you an exceptional portable DC-AC converter that not only meets but exceeds your expectations.
£750 GBP in 30 days
8.0
8.0

Hello, As experts with comprehensive knowledge and skills in circuit design, digital electronics, electrical engineering, and embedded systems, my team at Live Experts is more than well-equipped for your 24V to 240V converter project. With our proficiency in PCB layout, signal processing and understanding of power electronics, we guarantee a seamless design process while satisfying all the key requirements of your project. We understand the significance of incorporating an efficient Battery Management System (BMS) for LiFePO4 batteries and we have developed BMS in past projects that have proven to be exceptionally functional. In addition, we're knowledgeable about LiFePO4 battery systems. Moreover, we have a strong expertise in developing software for various embedded systems including LCD screens. Thus, through this interface, not only will you be able to perform essential monitoring functions like SOC, Time to Empty, Time to full charge etc., but it will be future-proof with a Bluetooth functionality that can be utilized for potential firmware updates or even remote operation. Choosing us over others guarantees that you've hired individuals who don't just meet your technical needs but contribute their skills in a way that enhances the overall quality of the product. Our commitment extends beyond just fulfilling basic requirements - we aim to deliver a solution which caters to even your unforeseen needs while ensuring utmost client satisfaction Thanks!
£750 GBP in 5 days
7.2
7.2

Hello, I appreciate the opportunity to work on your project for the 24V to 240V converter design with an integrated BMS. My understanding is that you need a comprehensive solution that includes both a PCB design and software to efficiently manage power conversion while ensuring safety and performance. With 2kW peak output and the capability to recharge from different sources, I will design the system to meet all specified requirements, including the LCD display and Bluetooth functionality for future updates. I have solid experience in PCB design and a strong background in power electronics, particularly with converters and battery management systems. My previous projects have involved creating similar devices, and I would be glad to share my portfolio with you. What specific dimensions or form factor do you have in mind for the PCB and the overall device design? Thanks, Shamshad
£750 GBP in 15 days
6.6
6.6

With regards to your project, I am confident that I have the expertise required for its successful completion. My eight years of experience in PCB design and my knowledge of power electronics and converters align perfectly with your needs. I have worked on numerous projects in this domain, incorporating varied features such as low battery alerts, adjustable recharge rates, and even LCD screen displays to show SOC, time to empty/full charge, current input/output; coincidentally, these are the exact requirements you have for your portable device. Moreover, my experience extends to software development for embedded systems and design of Battery Management Systems (BMS) as well. You specifically mentioned LiFePO4 batteries, and fittingly this is an area I am very comfortable with. I have full understanding of their characteristics and charging requirements and can duly apply them to your project. Lastly, being a Preferred Freelancer ranked among the top 3% speaks volumes about my work ethic and meticulousness. You can be rest assured of a timely delivery of high-quality results within budget. Turning your concepts into reality is my passion and I would be glad to lend my skills to your project. Feel free to peruse my portfolio or reach out anytime for further discussion on how we can make this project a grand success!
£500 GBP in 7 days
6.6
6.6

HI, PLEASE KINDLY READ THROUGH MY PROPOSAL I am a Researcher in Electrical Engineering with specialization in Control Systems (Linear and Nonlinear Control Systems). I have Bachelor's Degree in Electronics Engineering. My Area of Specialization is Prodcut Designs , Prototyping, Control System My Major skills are PCB design, Arduino, c/c++ MATLAB, Simulink WHAT I CAN DO: I’ll design a PCB in KiCAD for a portable 2kW (4kW peak) DC 24V to 240V converter, integrating a LiFePO4 BMS and battery charger. The system will feature a 200W solar input, adjustable mains charging (3kW max at 240V, 1.5kW at 110V), and low battery alerts. An STM32 MCU will run C firmware for real-time control, displaying SOC, time to empty/full, and input/output on a 16x2 I2C LCD. Bluetooth (HC-05) will enable firmware updates and future app integration. Deliverables: schematics, Gerber files, firmware, and BOM. RELEVANT PROJECTS: Designed a 1kW inverter PCB with BMS for LiFePO4, and a solar charger with Bluetooth control, achieving 95% efficiency. QUESTIONS: Battery capacity and cell configuration? Preferred solar panel voltage? LCD size or specific Bluetooth module? Please reach out to me , I assure you that i will deliver excellent results
£250 GBP in 3 days
6.2
6.2

Hi there, I’ve gone through your requirements and I can design both the PCB and embedded software for your portable DC–AC conversion system. With my background in mechatronics and power electronics, I’ve worked on high-power DC-AC inverters, battery management systems (LiFePO4), and embedded control for charging/discharging with monitoring and communication interfaces. I can design a robust 24V → 240V converter with 2kW continuous / 4kW peak output, integrate an onboard BMS, add dual charging options (AC mains 240/110V with adjustable rates, plus solar input), and provide protections with low-battery alerts. The LCD interface will display SOC, time to empty/full, input/output current, and I can also integrate Bluetooth for future updates. I’ll deliver a production-ready PCB design (schematic, Gerbers, BOM), embedded firmware, and clear documentation. Feel free to send me a message so we can discuss details and align the design with your specifications. Best regards, Samuel Tshibangu
£500 GBP in 2 days
6.2
6.2

As an experienced electronic hardware and firmware engineer with a strong power electronics background, I am well-positioned to design the 24V to 240V Converter with BMS you need. I specialize in PCB designs for power supply circuits just like this, and have a proven track record of developing efficient LED driver circuits and RF PCB layouts, which will be vital for your project. My expertise extends beyond hardware to include firmware development where I've gained extensive knowledge in programming microcontrollers such as the ones required for your project. This includes implementing communication protocols essential for seamless integration, a skill very important to your project which requires LCD screen, SOC display, and Bluetooth capabilities among others. I am also proficient in LiFePO4 battery systems which will be necessary for effective BMS design. Add this to my ability to develop reliable, high-performance PCBs and you have a winning combination that ensures your device is not only efficient but also safe for use. My dedication and commitment to delivering quality solutions on time make me the right choice for this project. Let's connect and discuss how we can make this innovative solution a reality together!
£500 GBP in 7 days
6.3
6.3

As an experienced Electrical Engineer, I am excited by the challenge your project presents. My expertise in PCB design and power electronics can significantly contribute to the success of your portable converter design. Having worked with numerous embedded systems, I am knowledgeable in developing Battery Management Systems (BMS), which is a crucial aspect of this undertaking. I have valuable experience working with LiFePO4 batteries as well as designing converters for varying voltage conversions. My proficiency across a range of programming languages including C, C++, Python, and Assembly will ensure that the software aspect of this project is executed seamlessly. The adaptive nature of this converter you desire demands a robust software architecture that I can provide. My past projects in developing embedded system firmware include features you need like detailed display functionalities through LCD screens and Bluetooth connectivity for future enhancements. It would be an honor to work with you on this project. Choosing me ensures access to my broad perspective derived from working across different disciplines. Let us join forces to transform your concept into a reality that surpasses your expectations. Thank you for considering my pitch, and I eagerly await the opportunity to discuss your project requirements further with you!
£950 GBP in 7 days
5.4
5.4

Hi, how are you doing? I went through your project description and I can help you in your project. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LABView/ Multisim/PSPICE/VLSI Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements. We can deliver your project efficiently within timeline. If you choose me, I think you won't regret. Best Regards.
£500 GBP in 7 days
6.1
6.1

Hello! I'm a highly skilled PCB Designer with over 9 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal
£750 GBP in 10 days
5.1
5.1

With over a decade of experience in circuit design, electrical engineering, and PCB layout, I am confident that my expertise aligns perfectly with the requirements of your 24V to 240V converter project. I have a strong background in developing power electronics and converters which will be ideal for this task. My knowledge extends to embedded systems software development, thus, I am well suited to create the integrated Battery Management System (BMS) your device requires.
£500 GBP in 7 days
5.3
5.3

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!
£750 GBP in 30 days
5.1
5.1

OVER TEN YEARS EXPERIENCE & WONDERFUL JOB SUCCESS RATE This is the kind of power-electronics project I love—where PCB design, firmware and energy management all have to mesh cleanly for high reliability. I’ve worked on high-wattage DC-AC conversion and LiFePO4 BMS design, so I understand the nuances of peak loads, safe charge/discharge cycles, and heat handling at these power levels. I’d start with a modular PCB layout, separating high-voltage conversion from logic/BMS control, ensuring proper creepage/clearance and thermal paths for 2–4kW. The embedded software would handle SOC calculations, time-to-empty/full algorithms, alerts, and Bluetooth-ready firmware updates. The LCD UI would remain simple but provide live metrics without lag. Adjustable recharge rate (1.5kW @110V / 3kW @240V) and solar integration would be parameter-driven, coded for safety and flexibility. I’ll deliver schematics, Gerbers, BOM, firmware, and clear documentation for assembly/testing. Would be excited to bring engineering precision and real-world durability to this portable power system. Thanks. Truong...
£300 GBP in 7 days
4.9
4.9

As an experienced electrical engineer, I believe my background in industrial automation and energy management are a perfect fit for your converter design project. Throughout my career, I’ve demonstrated expertise in developing high-performance systems which aligns perfectly with your need for a PCB and software. Specifically, I have extensive experience working with converters and power electronics in large scale projects including water treatment automation where reliable performance is critical. Moreover, my familiarity with LiFePO4 battery systems and BMS will ensure that the portable device will not only convert 24V to 240V but also manage its battery efficiently. My skill set extends beyond hardware development; I am proficient in building software solutions for embedded systems as well. In addition to the primary function of converting power, Lastly, my meticulousness in craftsmanship supported by my understanding of diverse manufacturing processes ensures thorough end-to-end deliverables - from designing to prototype production. With me on this project, you can count on consistent communication, attention to detail, and personalized solutions based on your specific needs. I am committed to bringing our device to life precisely to your specifications and exceeding your expectations.
£500 GBP in 7 days
5.2
5.2

Hello, I specialize in high-power PCB design and embedded software, with hands-on experience developing DC-AC inverters, BMS systems for LiFePO4, and solar/mains charging solutions. Could you clarify if you’d like the firmware for the LCD interface and Bluetooth integration included, or only the core power electronics and BMS? My portfolio includes multi-kilowatt inverter and charger systems with integrated protections, monitoring, and mobile connectivity, making me a strong fit for this project. Best regards, Vlad.
£500 GBP in 3 days
4.6
4.6

With extensive experience in designing embedded systems and PCB layouts as well as a deep knowledge of power electronics, I am confident in my abilities to successfully complete your 24V to 240V converter design project with a BMS. My comprehensive understanding of LiFePO4 battery system operation will ensure the battery management aspect of your project is handled meticulously. Furthermore, I have proven expertise in developing sophisticated BMS systems similar to the one you require; I recently designed high-complexity BMS for renowned clients like OperateMyBuilding and YFLab. Working on projects for different regions with varying electrical standards, I guarantee the versatility of your design by incorporating 240/110v recharge capabilities at 50/60Hz. Your device will also have a maximum solar input requirement of 200W, which I assure you, will be incorporated without any compromise to the performance of the system. For easy monitoring, I will integrate an LCD screen that displays various vital parameters like SOC, time to empty/full charge, current output/input among others. In conclusion, partnering with me on this project means getting a highly skilled professional dedicated not only to building your product but making it market-ready and positioned for growth. Take a moment to review my extensive portfolio. Together let's bring your next hardware innovation into fruition.
£500 GBP in 7 days
4.7
4.7

Best 24V to 240V Converter & BMS Design Expert! ⭐⭐⭐⭐⭐ Hi Alex, I can help you design a high-efficiency portable DC–AC converter system with an integrated Battery Management System (BMS) for LiFePO₄ batteries. With over 30 years of experience in power electronics, PCB design, and embedded software development, I’ll deliver a robust, prototype-ready solution optimized for performance and safety. ✅ 1. Valuable Suggestion: For a reliable 2kW (peak 4kW) converter, I recommend a high-frequency isolated topology with digital BMS control, ensuring efficient power conversion, safe charging, and long battery life. ✅ 2. Similar Projects: 1. 24V to 230V portable inverter with integrated solar charging 2. LiFePO4 battery pack with custom BMS and Bluetooth diagnostics 3. High-power DC–AC converter with LCD monitoring and adjustable charge rate ✅ 3. What You’ll Get: 1. Complete schematic and PCB layout for the 24V → 240V converter with onboard BMS 2. Embedded hardware for LCD display, SOC estimation, alerts, and Bluetooth connectivity 3. BOM with carefully selected components for safety, efficiency, and cost-effectiveness ✅ 4. Quick Questions: 1. Should the design prioritize maximum portability or extended runtime? 2. Do you prefer an LCD + buttons interface only, or also a mobile app for Bluetooth monitoring? Please note: I can’t initiate conversation on this platform. Kindly message me if you’d like to proceed. Best regards, PCB Must Innovations
£500 GBP in 4 days
6.4
6.4

I specialize in PCB & embedded software for power electronics, with experience in DC-AC converters, BMS for LiFePO4, and smart charging. Similar work, including an inverter design, is in my profile. Would you like me to share that sample project for review?
£750 GBP in 2 days
4.4
4.4

Hello there! I am ready to take on the project to design a 24V to 240V Converter with BMS for your portable device. The solution will include a PCB design and software development. The device will feature a 2kW output peak, a Battery Management System (BMS) for LiFePO4 batteries, an integrated battery charger, and meet all specified requirements including a solar input of 200W max, LCD screen display, and Bluetooth connectivity. Our expertise in PCB design, power electronics, BMS development, embedded systems software, and LiFePO4 battery systems ensures a comprehensive solution. Let's discuss your project in detail! Cheers, RedBrick American Engineering
£250 GBP in 2 days
3.8
3.8

I am a Licensed Professional Electrical Engineer with Master's degree and 6+ years of experience, with extensive expertise in power electronics, battery management systems, and embedded systems design. Your portable DC-AC converter with integrated BMS project aligns perfectly with my specialized background in power systems design and battery technologies. I have comprehensive experience designing high-power inverter circuits, LiFePO4 battery management systems, and embedded control systems. My background includes power conversion topology selection, thermal management for high-power applications, and safety systems for battery charging applications. My approach will deliver a complete system including high-efficiency DC-AC inverter design with 2kW continuous/4kW peak capability using advanced switching topologies, integrated multi-input battery charger supporting 240V/110V mains and 200W solar with adjustable charge rates, comprehensive BMS with cell balancing, protection circuits, and SOC estimation algorithms, advanced LCD interface displaying real-time system parameters, and Bluetooth connectivity for remote monitoring and firmware updates. I specialize in creating production-ready power electronics that meet safety standards and deliver reliable performance in demanding applications. I am ready for a quick meeting to discuss your specific power conversion requirements. Best regards, Tahir Saleem
£270 GBP in 2 days
3.0
3.0

Warminster, United Kingdom
Member since Sep 1, 2025
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