2x 18650 3.7V Serial Battery Holder حاملة بطاريات ليثيوم زوجية

2x 18650 3.7V Serial Battery Holder حاملة بطاريات ليثيوم زوجية is a compact battery holder designed to accept two 18650 lithium-ion cells and connect them in series. When two 3.7V cells are placed in series the combined nominal voltage is approximately 7.4V, making this holder suitable for projects and applications that require a higher voltage than a single cell can provide.The holder is built with spring contact terminals to ensure reliable electrical connection and easy insertion and removal of cells. It typically includes insulated leads for positive and negative outputs, allowing straightforward wiring into battery management circuits, chargers, or device power inputs. The plastic housing secures the cells and helps maintain correct polarity to reduce the risk of incorrect insertion.This battery holder is useful for hobby electronics, prototype builds, portable devices, and equipment that accept an external 7.4V battery source. Users should pair it with appropriate protection circuitry, charge management, and suitable 18650 cells matched by capacity and chemistry. Observe safe handling, correct polarity, and manufacturer recommendations for charging and cell selection when integrating this holder into any system.