Engineering Journal Hero
The Engineering Journal

Uncensored Engineering Truths for Battery Builders

Deep-dive technical papers, field-tested integration strategies, and thermal management breakthroughs written by our core engineers, for engineers.

Latest Articles

The Content Feed

Fresh engineering insights, strategies, and teardown reports.

Aluminum vs Stainless Steel Battery Pack Enclosures: Which Should You Choose?
Enclosures & Mechanical Design 9 Min Read

Aluminum vs Stainless Steel Battery Pack Enclosures: Which Should You Choose?

Aluminum battery pack enclo ure offer uperior thermal conductivity and lightweight propertie , making them ideal for pa enger EV . Stainle teel enclo ure provide unmatched durability and impact re i tance, perfect for heavy-duty mining vehicle and tationary energy torage y tem . Your choice depend entirely on your platform’ weight limit and operating environment.

Read more → Jul 10, 2026
15 ECE R100.3 Certification Test Items: Complete Guide
Global Homologation & Validation 7 Min Read

15 ECE R100.3 Certification Test Items: Complete Guide

ECE R100.3 certification require pa ing 15 critical afety te t for lithium-ion battery y tem . The e evaluate electrical afety, mechanical durability, and environmental re ilience, including thermal propagation, vibration, cru h, hort circuit, water immer ion, and overcharge protection.

Read more → Jul 9, 2026
Top 15 Battery System Parameters for Heavy-Duty EVs
Lithium-ion Battery 6 Min Read

Top 15 Battery System Parameters for Heavy-Duty EVs

De igning a lithium-ion battery pack for a heavy-duty EV or electric boat i incredibly complex. If you mi a ingle pecification, your entire vehicle integration could fail. I’m going to break down the top 15 battery y tem parameter for the heavy-duty EV that you ab olutely need to ma ter.

Read more → Jul 8, 2026
What is a DNV Certification for Marine Battery Systems?
Global Homologation & Validation 8 Min Read

What is a DNV Certification for Marine Battery Systems?

DNV certification for marine battery y tem i an independent, globally recognized maritime approval proce . It verifie that large lithium-ion battery pack (typically over 50 kWh) meet tringent afety, environmental, and reliability tandard for demanding off hore and marine environment .

Read more → Jul 7, 2026
What Are The Differences Between Cell, Module, and Battery Pack?
Manufacturing & Supply Chain 11 Min Read

What Are The Differences Between Cell, Module, and Battery Pack?

A battery cell i the ba ic chemical unit that tore electrical energy. A battery module i a clu tered a embly of multiple cell connected in erie and parallel within a mechanical frame. A battery pack i the final, deployment-ready y tem that integrate module with thermal management, a Battery Management Sy tem (BMS), and high-voltage control .

Read more → Jul 6, 2026
Top 8 Testing Items for UN38.3 Certification
Global Homologation & Validation 7 Min Read

Top 8 Testing Items for UN38.3 Certification

UN38.3 certification require lithium-ion battery pack to pa 8 rigorou te t : Altitude Simulation, Thermal Te t, Vibration, Shock, External Short Circuit, Impact/Cru h, Overcharge, and Forced Di charge. Pa ing en ure your batterie are afe for global tran portation.

Read more → Jul 3, 2026
What Is an Electrical Schematic Diagram for EVs?
BMS & High-Voltage Architecture 9 Min Read

What Is an Electrical Schematic Diagram for EVs?

An EV electrical chematic diagram i a tandardized 2D blueprint mapping the electrical connection , component , and logic circuit of an electric vehicle. It detail how high-voltage power and low-voltage control ignal flow between the battery, BMS, PDU, and drivetrain.

Read more → Jul 2, 2026
Stay Ahead

Don’t Miss the Next Engineering Breakthrough

Join CTOs, battery architects, and procurement heads who receive our Monthly Pack-Build Insider.

✉️ No spam. Ever.
🛡️ Engineering-grade content only.
✅ Unsubscribe anytime.