5V 2A USB 2X 18650 caja del banco de energía Kit cargador de batería caja DIY para teléfono inteligente HCCY caja del banco de energía caja de almacenamiento de carga

Features:
1.Use high-quality materials with guaranteed quality
2.The nesting includes the power motherboard, power housing, and spring iron sheet
3.Stable performance, can accommodate 1-2 3.7V18650 lithium batteries (flat head, pointed universal)
4.Easy to use, this product has a separate circuit with anti reverse protection, and the battery can be installed freely without burning the board. If one of the two batteries is installed correctly, it can be used normally
5.Small size, exquisite appearance, and easy to carry