3X(This model is a non-mobile power supply product of welding-free mobile power supply (circuit board + shell), excluding the battery. The battery needs to be purchased by the customer to install 18650 (flat head) it can be used. Do not put the battery in reverse, it will damage the motherboard, (the is the positive pole, the spring is the negative pole), put it in correctly, there is no , the shell cannot be disassembled twice, fix it at one time!
Battery model: 18650 (not included)
Installable cells: 6 sections

Colour:black
Material:plastic
Size:146 x 77 x 23mm

Package Contents:
1 Bank Case)