True Cordless Freedom Meets Professional Power

Working on intricate electronics shouldn't mean fighting with heavy power cables. The FNIRSI HS-03 is engineered for engineers, DIY enthusiasts, and STEM educators who demand reliable, on-the-go performance. Powered by a high-capacity 2600mAh replaceable battery, it ensures your workflow remains completely wire-free.

Zero Downtime with Dual Power Modes

Battery running low in the middle of a critical repair? Simply plug in via USB-C using a power bank or adapter. The seamless transition between battery and corded modes means you experience absolutely zero downtime.

Precision Heat in Just 7 Seconds

Time is money, especially for field repairs. Featuring a powerful 10W output and advanced heating technology, the HS-03 melts solder in just 7 seconds. The custom F210 precision tips ensure rapid thermal recovery, allowing you to tackle micro-components and heavy-duty joints with equal ease.

Advanced PID Temperature Stability

Fluctuating temperatures lead to poor solder joints. Equipped with an advanced PID temperature control chip, this soldering iron eliminates transient load fluctuations. You get rock-solid stability across its impressive 212–842°F (100–450°C) range. Dial in your perfect heat using the crisp 0.96" IPS HD display and 1°F ultra-precision adjustment.

Smart Safety for Peace of Mind

Designed for the modern workbench, the customizable auto-sleep and standby functions (0.5–60 mins) not only extend the lifespan of your tips but also prevent accidental burns, giving you absolute peace of mind when stepping away from your desk.