Build your own portable charger with this Estardyn DIY Power Bank Kit! 🔋 Featuring a durable metal case and built-in circuit board, it supports one compatible 3.7V flat-top 18650 lithium-ion battery (not included) to provide 5V/1A USB output for charging compatible phones and small devices. The removable case makes battery access convenient, while built-in overcharge and overvoltage protection adds an extra layer of safety. Ideal for electronics hobbyists and DIY power projects. Battery not included; use only the specified compatible battery type.:Â
