Multi-Cell Battery Management System (BMS)

What you'll build

Charge and protect a multi-cell lithium battery pack safely with a real battery-management analog front-end (BQ769x0). You'll implement cell balancing, constant-current/constant-voltage charging, and the fire-safety protections (overvoltage, undervoltage, and overcurrent) that any serious pack needs. It builds directly on the single-cell power module.

It sits on the POWER track: power delivery, including batteries, charging, protection, and the clean rails everything else depends on.

The build pipeline

No steps skipped, no black boxes. Each stage is gated on real proof of work: a clean ERC, valid gerbers, a passing bring-up. You finish having actually done the engineering, not just watched it.

1. 01REQUIREMENTS
2. 02BOM SOURCING
3. 03SCHEMATIC
4. 04LAYOUT
5. 05DRC + GERBER
6. 06ORDERING
7. 07ASSEMBLY
8. 08BRING-UP
9. 09REVISION

Builds on

• ESP32-S3 USB-C Breakout Board→
• ESP32 Li-ion Battery & Power Module→

Part of these builds

Questions

When does this course open?

It's in active production. Join the waitlist and we'll email you the moment it goes live, and the demand signal helps us decide what to build next.

Is it beginner-friendly?

This is an advanced L3 capstone, the deep end where the subsystems come together. Every stage is explained from first principles, so you can follow along as long as you're comfortable reading a schematic.

What will I need to build it?

The course overview will preview for free; the full course is a one-time purchase (no subscription). Building the board for real also needs its bill of materials (listed in the course) and a small PCB order from a fab house. The course walks you through both.

What will I actually learn?

You'll learn power delivery, including batteries, charging, protection, and the clean rails everything else depends on, plus the full board workflow: schematic capture, layout, DRC, gerber export, ordering, assembly, and bring-up.