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Using Thermal Cameras for Diagnostic Checks Tools & Equipment

Using Thermal Cameras for Diagnostic Checks

A high-resistance connection is invisible to the eye but glows like a star to a thermal camera. In this diagnostic masterclass, we explain the physics of IR imaging, how to perform a dynamic load test to spot weak spot welds, and why a $200 thermal module is the best safety investment for any battery workshop.

04 Dec 2025 Read More
Choosing a Soldering Iron for Battery Work Tools & Equipment

Choosing a Soldering Iron for Battery Work

Soldering onto a battery pack is a race against time. If you take longer than 2 seconds, you risk melting safety seals. In this guide, we evaluate the thermal recovery of T12, Hakko, and JBC systems, explain why 100W is the minimum for BMS work, and provide the definitive technique for soldering 10AWG wire without cooking your cells.

03 Dec 2025 Read More
Internal Resistance Meters: Using the YR1035+ Tools & Equipment

Internal Resistance Meters: Using the YR1035+

A multimeter measures voltage, but it cannot see the health of the chemistry. In this engineering deep dive, we explain the physics of 1kHz AC internal resistance measurement, why the YR1035+ is mandatory for cell binning, and how to interpret milliohm readings to catch failing cells before they enter a pack.

02 Dec 2025 Read More
Using Electronic Loads for Capacity Testing Tools & Equipment

Using Electronic Loads for Capacity Testing

The label on a lithium cell is often a work of fiction. To build a balanced pack, you must measure the actual energy output. In this technical guide, we review the DL24P, EBC-A20, and EBC-A40L electronic loads, explain the physics of 4-wire Kelvin measurement, and show you how to identify "fake" high-capacity cells before they enter your system.

01 Dec 2025 Read More
Spot Welder Comparison: kWeld, Malectrics, and Glitter Tools & Equipment

Spot Welder Comparison: kWeld, Malectrics, and Glitter

A weak spot weld is a hidden fuse waiting to fail. In this engineering evaluation, we compare the joule-counting kWeld against the Arduino-based Malectrics and the capacitor-driven Glitter 801 series, explaining the physics of resistance welding and why timing-based welders are obsolete for high-performance lithium packs.

30 Nov 2025 Read More
Project: Hybrid Capacitor-Lithium Jump Starter DIY Projects

Project: Hybrid Capacitor-Lithium Jump Starter

Most portable jump starters fail in the winter because lithium chemistry struggles to deliver high current when frozen. We build a hybrid "Cold Weather Beast" using a bank of 3000F supercapacitors and a high-C LiPo battery, creating a device that provides 1000A of cranking power even in the middle of a blizzard.

29 Nov 2025 Read More
Project: Building a Flexible Electric Skateboard Pack DIY Projects

Project: Building a Flexible Electric Skateboard Pack

Building a battery for an electric skateboard is a mechanical challenge as much as an electrical one. Standard rigid packs will snap under the constant flexing of a longboard deck. In this advanced guide, we detail the architecture of segmented battery packs, the use of silicone wire bridges, and the vibration-damping techniques required for a high-performance 10S2P flexible build.

28 Nov 2025 Read More
Project: Solar Powered USB Power Bank DIY Projects

Project: Solar Powered USB Power Bank

Most commercial solar power banks are toys with tiny 0.2W panels. We build a professional-grade portable power station using a 10W panel, high-drain 18650s, and a genuine CN3791 MPPT charging controller for real-world efficiency in the sun.

25 Nov 2025 Read More
Project: Converting a UPS from SLA to LiFePO4 DIY Projects

Project: Converting a UPS from SLA to LiFePO4

Tired of replacing lead-acid UPS batteries every two years? Lithium Iron Phosphate (LiFePO4) offers a 10-year lifespan, but it isn't a simple drop-in. In this engineering project, we analyze the voltage matching of 8S LFP vs. 24V Lead-Acid, the challenges of float charging, and how to silence the internal alarms of your APC or CyberPower unit.

24 Nov 2025 Read More
Project: Upgrading Bluetooth Speaker Batteries DIY Projects

Project: Upgrading Bluetooth Speaker Batteries

Commercial Bluetooth speakers are often crippled by small, low-quality lithium polymer pouches. In this project guide, we show you how to swap dead factory batteries for high-capacity 18650s, explaining the voltage matching required for 1S vs. 2S systems and how to safely modify the chassis for a massive runtime boost.

22 Nov 2025 Read More
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