Product Overview The 13600 3.7V 900mAh Cylindrical Li-Polymer Battery is a rechargeable lithium-polymer cell engineered by VATS Battery for reliable, long-lasting power in modern electronic devices. Built on a compact 13.0×60.0mm footprint, it combines a stable 3.7V nominal voltage with a true 900mAh capacity, allowing portable devices to run longer on a single charge without adding bulk. Manufactured by an ISO9001-certified lithium battery maker based in Guangdong, China,