This Samsung 18650 3.6V 2600mAh battery is a high-quality battery for use with most high-drain devices. The 2600mAh capacity means that it is a perfect fit for high-drain devices like mods and flashlights. The battery has a rating of 20A and has a maximum discharge current of 20A, making it a good battery for high-drain devices. It has a low self-discharge rate, meaning that the battery will not lose its charge for long periods of time. This is important for batteries that are stored for a long time.