Battery pack from Old Laptop battery.

thingiverse

This week I made a portable power bank that lets me charge my mobile on the go. It has two Li-ion batteries and packs 4200 milliamps of power. It charges all types of mobile devices and provides a constant 5-volt power source. The maximum current output is approximately 600 milliamperes. The case was designed to be compact and sleek in your hand, thanks to its 3D printed construction. https://www.youtube.com/watch?v=ZZrsI1alguo ------------------------ PARTS NEEDED: 2 Li-ion batteries: http://goo.gl/OBrGIE TP4056: http://goo.gl/yF0i3F 5V step-up booster: http://goo.gl/2LB4Ax ------------------------ FOLLOW ME ON: http://instagram.com/mrjcrp http://facebook.com/mediamilan http://twitter.com/mr_jcrp ------------------------ MORE PROJECTS, TUTORIALS AND POSTS CAN BE FOUND AT http://www.mediamilan.com. Remember that Li-ion batteries can explode if mishandled. Handle them with care. Print Settings: Printer Brand: RepRap Printer: Prusa i3 Rafts: No Supports: No Resolution: .4mm nozzle / .2 layer height Infill: 50% Notes: Printed in ABS.