4piece 3A Battery Pack Box with Switching with Cord and Lid; no soldering required Key benefits and features No soldering needed: fourpack battery box with builtin switching, cord and lid for simple, tool assembly. Polarity quick recognition: industrial springs and colorcoded wiring allow instant polarity identification. Durable and reliable: designed to withstand daily use while maintaining optimized electrical conductivity for 3A battery configurations. Safe and suitable for education: ideal for electronics enthusiasts building projects and for childsafe battery compartments in educational toys. Easy power control: integrated switch and wire enable straightforward control of power flow to batterypowered devices. What makes it stand out Readytouse 4pack configuration with switch, lid and cord, reducing assembly effort. Durable construction with polarityfriendly wiring to support 3A battery setups. Versatile for hobby projects and educational applications while prioritizing safety in childfocused deployments. Typical applications Educational projects and classroom demonstrations that require a safe, switchable power source for 3A batteries. DIY electronics and prototyping projects such as small robots, sensors, or modular gadgets needing easy power control. toy projects and childsafe battery compartments in educational toys.