Iron and Air Systems

Guide · Battery

Battery Management Systems Explained

Direct answer

What a BMS does, why every lithium battery needs one, and how to choose between integrated and external BMS architectures.

A Battery Management System (BMS) is the safety brain of every lithium battery. It balances cells, prevents over-charge and over-discharge, monitors temperature, and shuts the bank down if something is unsafe. This guide covers what a BMS does, why every lithium battery needs one, and how to choose between integrated (drop-in batteries) and external BMS architectures (Victron Lynx, REC BMS) for marine and off-grid applications.

This guide is being written. Full content coming soon.


Iron and Air

Published 26 April 2026

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