Home Services About Contact
BATTERY MANAGEMENT SYSTEMS

Battery Management
Systems

From cell monitoring to pack-level integration. 4S to 120S.
Proven at 10K+ units/month across three OEM platforms.

4S–120S
Cell Range
10K+
Units / Month
3
OEM Platforms
50+
Safety Interlocks
EXPERTISE

Complete BMS Engineering

We design battery management systems that ship at scale. Our BMS expertise spans electric vehicles, energy storage systems, and industrial applications — from cell-level monitoring through pack-level integration, with production-proven firmware and safety architectures.

SoC / SoH Estimation

Coulomb counting, OCV lookup, and model-based estimation algorithms. Accurate state tracking across temperature and aging.

Cell Balancing

Passive and active balancing architectures. Module-level balancing for large packs. Energy-efficient redistribution.

Thermal Management

Temperature monitoring, thermal derating, cooling control integration, and thermal runaway protection strategies.

Functional Safety

Multi-layer protection architecture. Pre-charge, contactor control, fault management, and field-proven safety interlocks.

OUR WORK

Products We've Built

Production-proven BMS designs across EV and energy storage applications.

2W EV BMS for leading Indian OEM
Add Product Image

2W EV BMS — Leading Indian OEM

Complete battery management system for a two-wheeler electric vehicle platform. Designed for high-volume production at 10K+ units per month.

4S–16S CAN Bus Production
ESS Battery Pack for US manufacturer
Add Product Image

ESS Battery Pack — US Manufacturer

Energy storage system BMS with advanced SoH diagnostics and cloud connectivity. High-voltage architecture for grid-scale deployment.

High Voltage SoH Diagnostics Cloud
EV BMS for Vietnamese OEM
Add Product Image

EV BMS — Vietnamese OEM

Multi-cell BMS platform for electric scooters and motorcycles. Integrated safety architecture with 50+ protection interlocks.

Multi-Cell UART / SPI Safety
SPECIFICATIONS

Technical Capabilities

Deep expertise across the full BMS engineering stack.

Communication Protocols

  • CAN 2.0B / CAN FD
  • UART / RS-485
  • SPI / I2C (inter-IC)
  • isoSPI (daisy-chain cell monitors)
  • Modbus RTU / TCP

MCU Platforms

  • TI MSPM0 (low-power, cost-optimized)
  • STM32 (F4, G4, L4 families)
  • TI C2000 (real-time control)
  • NXP S32K (automotive grade)
  • Bare-metal & FreeRTOS

Protection Features

  • Over-voltage / Under-voltage (cell + pack)
  • Over-current / Short circuit
  • Over-temperature / Under-temperature
  • Pre-charge & contactor control
  • Thermal runaway detection & isolation

Standards & Compliance

  • IEC 62619 (Secondary lithium cells)
  • UL 1973 (Stationary batteries)
  • UN 38.3 (Transport of lithium batteries)
  • AIS-156 (India EV standard)
  • MISRA C coding guidelines
OUR PROCESS

From Concept to Production

A structured approach to BMS development that minimizes respins.

01
Requirements & Architecture
Cell chemistry, voltage range, current specs, safety requirements
We start by understanding your battery pack configuration, cell chemistry, operating environment, and safety requirements. This defines the BMS architecture — number of monitoring channels, balancing strategy, communication topology, and MCU selection.
02
Schematic & Firmware
Circuit design, safety interlocks, algorithm development
Parallel hardware and firmware development. Schematic design includes cell monitoring ICs, protection circuits, pre-charge, and communication interfaces. Firmware covers SoC/SoH algorithms, balancing control, fault management, and communication stacks.
03
PCB & Prototype
Layout, fabrication, assembly, initial bring-up
PCB layout with thermal management, high-voltage isolation, and EMI considerations. Prototype build and bring-up includes cell monitoring validation, protection threshold verification, and communication testing across the full operating temperature range.
04
Validation & Production
System testing, certification support, production handoff
Full system validation against requirements. Support for IEC 62619, UL 1973, and other certification testing. Production handoff includes Gerbers, BOM, assembly instructions, test procedures, programming jigs, and manufacturing support.

Need a BMS designed?

Let's discuss your battery pack requirements.

Get in Touch
mohit@maqlabs.com
+91 8600175076