LiPo batteries for drones
Drones punish a weak battery immediately: thrust falls, flight time collapses, and a voltage sag under load can end a flight. This page explains drone battery selection through the high-discharge listing built for it.
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A drone battery must deliver high current on demand — take-off, climb and manoeuvre all draw peaks far above cruise current — while staying light enough to fly. That combination is why drone batteries are high-discharge cells, and why weight matters as much as capacity: a heavier battery that adds capacity can still reduce flight time if the motors must work harder to carry it. The selection balance is energy per gram at the required peak current, not capacity alone.
The 702030 drone listing states 3.7 V, 300 mAh, 7.0 x 20 x 32 mm, 20C, a 500-times cycle life, and drone applications, with its own minimum order of 5 pieces, enquiry range of $0.96–1.50 and 7-work-day lead time. The 20C figure belongs to that listing. Other drone-suitable listings differ in capacity, rate and terms, and a larger drone will typically need a larger, higher-voltage pack rather than a bigger single cell.
For a drone inquiry, state the aircraft's voltage (series count), the capacity or flight-time target, the peak current or motor draw, and the weight budget. Those four facts determine whether a single cell, a series pack or a custom pack is the answer — and they prevent the common error of buying on C-rate alone and discovering the pack is too heavy or too small.