Features: Two cylindrical batteries, lithium batteries, suitable for remote controls, toys or other small electronic devices. Circuit board module: With two leads (red and black), it is used to connect the battery and other electronic components. Multi-purpose: These components are used to assemble simple electronic projects or prototype designs. Rechargeable: It adopts a rechargeable design, can be reused, and is energy-saving and environmentally friendly. Date First Available March 2, 2025