【4-Pack PCB Mount 21700 Battery Holders】 Each set includes 4 triple-slot holders, designed for flat-top 3.7V 21700 lithium batteries, ideal for PCB mounting and DIY electronics.
【Nickel-Plated Steel Pins for PCB Soldering】 Features durable steel spring contacts with a nickel-plated finish, ensuring strong conductivity and secure battery placement. ⚠ Not designed for bending—only for PCB insertion and soldering.
【Safe Installation & Removal】 ⚠ Due to the cylindrical battery structure, always insert the battery at an angle, starting with the positive terminal first, then pressing down the negative terminal. For removal, detach from the negative side first to prevent short circuits.
【Compact & Secure Fit】 The precise slot design keeps batteries firmly in place, preventing loose connections and ensuring reliable power delivery for PCB-based projects.
【Safety Warning - Sharp Pins】 ⚠ The steel contact pins are sharp. Handle with care to avoid injury. Keep out of reach of children.