The CNHL MiniStar 3S 650mAh and 850mAh batteries with a 70C discharge rating are ideal for 2-3 inch FPV quadcopters.The C-rating of a battery indicates its maximum safe power delivery, crucial for high-speed racing and freestyle moves.The internal resistance (IR) of the cells also impacts performance, affecting voltage sag and flight duration.CNHL, known for affordable LiPo batteries, offers the MiniStar series designed for efficiency and weight savings.Both the 650mAh and 850mAh batteries feature a 70C discharge rate, XT30U connectors, and AWG14 wires.Flight tests with the DarwinFPV CineAPE20 O4 showed efficient thermal management and good cell balance.The 850mAh battery demonstrated lower internal resistance and provided longer flight times compared to the 650mAh pack.CNHL's 3S MiniStar batteries are priced at $19.98 for the 650mAh pair and $25.98 for the 850mAh pair.These batteries are available for purchase from various warehouses and offer good power-to-weight ratios and charging capacities.FirstQuadcopter's unbiased reviews provide valuable insights into drone-related products to assist buyers in making informed decisions.