I will design custom battery packs for ev solar and ess

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walethebooklab
W
walethebooklab
The BookLab

About this gig

Need a battery pack that is properly sized for your application, not just a collection of cells?


I design custom lithium-ion and LiFePO4 battery packs for EVs, e-bikes, solar systems, energy storage, robotics, portable electronics, and other battery-powered products.


Depending on your project, I can support:


  • Cell chemistry and cell selection
  • Series and parallel configuration
  • Voltage, capacity, energy and runtime calculations
  • Pack sizing and architecture
  • BMS selection and integration guidance
  • Charging and discharging requirements
  • Current and C-rate calculations
  • Thermal and safety considerations
  • Mechanical layout and enclosure planning
  • Component selection and BOM
  • Technical documentation and design review


Every project is developed around your required voltage, capacity, load, operating conditions, available space, and performance targets.


You receive a clear, application-focused battery design with the calculations and documentation needed to move your concept toward prototyping or further engineering development.


Please message me before ordering for EV, high-current, high-voltage, or custom projects so I can confirm the correct scope.

Delivery style preference

Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.

Get to know The BookLab

The BookLab

Expert at what he does!

  • FromUnited States
  • Member sinceAug 2026
  • Avg. response time4 hours
  • Languages

    English, French, Spanish, German
I am a Battery Design and Engineering specialist providing practical solutions for EVs, energy storage systems, electronics, robotics, and renewable energy applications. I offer lithium-ion battery pack design, cell selection, series/parallel configuration, voltage and capacity calculations, BMS planning, thermal management, charging/discharging analysis, enclosure considerations, performance optimization, and technical documentation. I focus on safety, efficiency, reliability, and real-world performance, delivering battery solutions tailored to each project's technical requirements.