This battery case was developed to be attached on a bicycle. Case can hold up to 4x18650 batteries which is quite universal solution for led lamps. Led lamp used in this project was: http://www.lightmalls.com/solarstorm-x2-2000-lumen-dual-head-bicycle-light-with-2xcree-xm-l-u2-led-4-modes-4-18650-batteryBasic printing settings are required. No need for special tuning. We used 0.2mm layer height and ABS.