Lion PowerCustom Power Designs
Custom power conversion, motor control, and battery systems for teams who've outgrown off-the-shelf modules.
What clients say
Quoted feedback from past projects.
Samo and his team took our project of developing the world's first USB-C charging for eBikes. Their expertise quickly identified improvements in our ideas and their commitment delivered the final product before the deadline. This allowed us to beat our competition as first to market.
We were experiencing issue after issue with our motor controller modules and that's why we decided to get our own motor controller developed. Engineers at Lion Power made a really high-quality product which cut our field failure rate by 80%. Definitely recommend.
We just completed our second project with Samo and are planning a third one. We went through a few 'low budget' freelancers before we found Samo and the results were 'low quality', like expected. Samo really turned things around for us. He took over the whole electronic system development and perfectly integrated with our mechanical department. The result was a high-power battery-operated LED light that passed all certifications with ease and is successfully selling.
We hired Samo because we needed scientific grade motor controllers for our robots that we just couldn't find elsewhere. Samo proved to be a reliable and trustworthy partner as he quickly and diligently responded to many requirement changes from our side during the project. Recommend.
I had an academic paper that described the high-voltage power supply necessary for our product. I reached out to more than 20 contractors and they all declined because they just didn't see the value in studying and learning something new. Samo gladly took up the challenge, reviewed multiple other academic papers, proved as a worthy discussion partner, improved upon the idea and finally built the power supply. It is now manufactured in multiple thousand units annually. Best contractor I had.
The stock motor drives that we used in our heat pump just didn't perform well enough and the price was ridiculous. We decided to invest in the development of our own drive so that we could own the design and manufacture it at a lower cost. Samo and his team proved more than adequate and they delivered the designs and validated prototypes ahead of schedule. This cost for our motor drive was reduced by 60%. Best investment we made.
How we work
The same sequence, whether the deliverable is one board or a small production run.
Consult
Define the electrical and mechanical constraints — load, environment, volume, timeline.
Design
Topology, component selection, schematic and layout — reviewed against the real requirements.
Prototype
Bring-up, bench testing, and firmware to get a working unit in your hands fast.
Validate
Thermal, load, and reliability testing against the conditions the product will actually face.
Deliver
Production-ready documentation, firmware, and hand-off — or ongoing support, as needed.
What we do
Eight disciplines, one design process. Select a field to see the work in detail.
Power Supply
Custom DC-DC and AC-DC converter design, sized to your load — not a datasheet reference design.
View work → 02High Voltage Power Supply
Multi-kV supplies for plasma and laser applications, built for clean, stable high-voltage delivery.
View work → 03Battery Charger
Charger design tuned to your cell chemistry, charge profile, and safety requirements.
View work → 04Battery Management System
Cell monitoring, balancing, and protection electronics for battery packs — automotive and industrial grade.
View work → 05Battery Storage System
Complete energy storage system design, from cell to enclosure, for stationary and backup power.
View work → 06Motor Controller
Drive electronics and control loops for BLDC, PMSM, and stepper motors, tuned to the load they see.
View work → 07LED Driver
Custom LED driver design for precise, efficient, and reliable illumination control.
View work → 08Inverter
Solar, UPS, and grid-tied inverter design built to convert and deliver power where it's needed.
View work →Selected work
A few recent builds, framed by the problem they solved.
USB-C Charging for an Ultra-Compact Deep-Sea Light
Charger built directly into the light itself, so it charges from any USB-C source on hand — no separate charger to buy, pack, or lose in the field.
Ultra-Compact Battery Pack for a Deep-Sea Light
A two-level cell configuration packed more capacity into a deep-sea light's tightly constrained battery volume — extending operating time 50% with no increase in product size.
High-Power Deep-Sea LED Light with Driver
Water-cooled, metal-core PCB driver design for a high-power deep-sea LED light — hotspot temperature down 60%, MTBF up 30%, without growing the housing.
Complete Electronics Platform for a Deep-Sea Exploration Light
Four boards, one team — charger, BMS, LED driver, and battery pack, developed end-to-end so the client's electronics could run fully outsourced.
Integrated Charger and BMS for a High-End Electric Road Bike
A compact, integrated charger and BMS let the frame get shaped around aerodynamics and rider comfort — not around bulky electronics.
USB-C Charger Adapter for Electric Bicycles
A pocket-size adapter lets eBike riders skip the bulky stock charger and top up with the USB-C charger they already carry for their phone or laptop.
Synchronous Motor Control Card for Robotic Arm Actuators
Hardware and firmware control loops tuned to the client's actuator motors improved robotic-arm precision 30% — fewer defects, fewer mistakes in use.
Frequently asked questions
A few things clients usually ask before getting in touch.
How long does a typical project take?
A complete project typically takes 6 to 12 months, covering requirements and feasibility, proof of concept, simulation, schematic design, PCB layout, prototype fabrication, validation, and design revisions through to hand-off. Support continues afterward as you integrate the electronics into your product, with the option of ongoing cooperation through pilot and manufacturing runs.
What certifications do your designs support?
Designs are developed to be CE, UL, IEC, and FCC compliant. Pre-compliance testing is performed so you face minimal issues when certifying through a notified body. Specific standards are defined at the start of each project based on your target market.
Is there a minimum project size?
Projects range from R&D prototypes and proof-of-concept work through to manufacture-ready designs. A small, quick design typically starts around $10,000 USD; a full product-ready design typically runs $15,000–$30,000 USD, depending on complexity. Get in touch to discuss your specific requirements.
Do you help after the prototype is delivered?
Yes — support continues after hand-off, including integration and troubleshooting assistance, certification support, and setting up pilot and manufacturing runs, with final product delivery to your specified address.
Want to bring a project to life?
Send over what you're building and what it needs to do. We'll get back to you at the email you provide.