Showing 10 of 10 articles
DIY Projects
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.
DIY Projects
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.
DIY Projects
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.
DIY Projects
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.
DIY Projects
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.
DIY Projects
The project that defined a generation of DIY energy storage. We break down the engineering of a modular 18650 powerwall using recycled laptop cells, explaining the safety of cell-level fusing, the physics of massive busbars, and the logistics of testing 1,000+ cells for a home-scale energy system.
DIY Projects
Buying a professional kWeld is expensive, but you can build a highly capable resistance welder using a spare 12V car battery and a few key components. In this technical guide, we explore the physics of Joule heating, the "fail-shut" risks of cheap MOSFET boards, and how to build a safe, consistent welder for your 18650 packs.
DIY Projects
Those old DeWalt and Makita drills are built like tanks, but their NiCad batteries are ancient history. In this comprehensive project guide, we walk through the engineering of a 5S lithium conversion, explaining why high-drain cells are mandatory, how to integrate a tool-grade BMS, and the critical reason why you must throw away your original charger.
DIY Projects
Is your e-bike range dropping? Don't buy a cheap replacement pack with mystery cells. In this engineering walkthrough, we explain how to safely rebuild a Hailong-style downtube battery using premium high-drain cells, custom spot-welding layouts, and advanced insulation techniques to maximize range and safety.
DIY Projects
Commercial solar generators are expensive and often unrepairable. In this step-by-step project guide, we show you how to build a rugged, high-capacity 12V LiFePO4 power box inside a military-style ammo can, complete with MPPT charging, high-speed USB-C PD, and a detailed wiring schematic for off-grid resilience.
