Category Archives: Unclassified

Every day, we rely on lithium batteries—whether in smartphones, laptops, electric vehicles, power banks, drones or home energy storage systems. Yet, few people pay attention to a “hidden killer” inside these batteries: internal resistance (IR). It’s invisible and untouchable, yet it directly determines a battery’s health, efficiency, and safety. For example, when your phone drains…

Drone flight has become incredibly advanced. Stabilization, autonomy, and navigation systems have reached a point where flying is no longer the biggest challenge. But at sea, landing is still a gamble. Unpredictable waves, constantly shifting decks, and slippery surfaces make even the most experienced pilots struggle. As a result, most offshore drone operations are still…

In multirotor drones, flight is not just about motors or propellers—it’s about a tightly coupled energy chain where every component affects the next. Understanding how electrical energy is converted into thrust is the foundation of selecting the right battery, optimizing performance, and avoiding costly mismatches. Let’s break down the complete powertrain, then walk through hover…

1. Industry News: A Step Toward “Infinite Flight” Recently, Kraus Hamdani Aerospace (KHA) and PowerLight Technologies successfully demonstrated a laser-based wireless power transmission system for drones at Shaw Air Force Base. During the test: The K1000ULE UAV received ~1 kW of power mid-air The system operated at altitudes up to 5,000 ft (1,500 m) The…

As UAVs and eVTOLs advance, battery performance remains the limiting factor for flight endurance, payload, and operational efficiency. While flight control, aerodynamics, and lightweight materials have seen major improvements, energy density is still the bottleneck. One of the most effective ways to increase energy density is raising the operating voltage of lithium-ion soft pack batteries….

On April 22, 2026, China’s first domestically produced heavy-lift eVTOL, the AR-E800, successfully completed its maiden flight. At the core of this aircraft is an 800V high-voltage platform battery pack, independently developed by Changhong Power, overcoming major technical challenges including high-voltage insulation, thermal management, and weight optimization. This battery serves as the aircraft’s reliable “heart,”…

In UAV battery manufacturing, one test is so simple that it’s often underestimated—yet so powerful that it quietly determines whether a cell is stable, consistent, and safe: Open Circuit Voltage (OCV) For drone battery packs—especially high-performance pouch cells—OCV is not just a number. It’s a window into the internal health of the cell. 1. What…