Racepow 15000mAh 6S3P is a high-end Liion battery suitable for 9-10" drones, where it can provide long flight time. The advantage of Liion batteries is their higher energy density - they can offer higher capacity at a lower weight. The downside, however, is smaller discharge currents. So you need to be gentle on the throttle. Li-ion batteries are thus particularly suitable for calm flight - cruise or long-range. The minimum voltage per cell is 2.5V, but we recommend landing with a slight margin at about 2.7V per cell. The battery is made from Samsung INR21700-50S cells, which are among the best on the market.