Summer is heating up, and portable fans are officially a must-have for daily commutes and weekend getaways. Teardown insights from Dianchi reveal that Xiaomi’s latest Mi Handheld Fan is making waves. Equipped with an LED digital display and a highly satisfying 100-step stepless speed control, this fan is built to keep you cool all day thanks to its massive 5000mAh battery.
Designed with an integrated handle battery pack, the unit operates at a nominal 3.65V with a 5000mAh (18.25Wh) capacity and a 4.2V charge limit. Under the hood, it features two LISHEN 18650 cylindrical lithium-ion cells, model LR1865SK, delivering 2600mAh (9.49Wh) per cell—a battery previously put through rigorous professional testing by the network. Wired in parallel, this dual-cell setup hits that impressive 5000mAh mark, ensuring sustained, reliable airflow.
Compared to single-cell designs, putting two cells in parallel boosts total capacity without changing the single-cell voltage platform, striking the perfect balance between a comfortable grip size and extended runtime. The 18650 form factor remains an industry staple for a reason. For compact, steady-draw appliances like handheld fans, a parallel 18650 layout squeezes a full 5000mAh of endurance into a remarkably tight handle footprint.
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