High-performance 3.7V 350mAh Lithium Polymer Battery for barcode scanners and 4G/WiFi/GPS data collectors. Ultra-thin, lightweight design with high energy density, long cycle life, and excellent safety performance. Customizable size, voltage, capacity, PCM, and connectors. Ideal for portable industrial devices requiring reliable power. Certified to UN38.3, IEC62133, RoHS, and other international standards.More