Summary Battery holding cases for C.H.I.P. 9$ computer. It can be used with a standalone C.H.I.P. , or Pocketchip, and with Lego type building blocks. You can power Pocketchip by also plugging the battery into C.H.I.P. and I've also ventured into using Pocketchip with two batteries at once. I haven't fully tested the long term of using chip with two batteries, but from what I've seen my Pocketchip is still okay. The Initial thought was allow C.H.I.P. users a convenient and safe place for a battery to be stored. Also make more space inside the Pocketchip case itself so more additional hacks could be done inside. Read here before using two batteries at once as of 10/18/16 I've read it might be a bad idea. For more information you can visit NextThingCo.'s Forum where a topic is created discussing Adding a second battery and alternative powering. https://bbs.nextthing.co/t/adding-a-second-battery-and-alternative-powering/10793 Print Settings Printer Brand: Printrbot Printer: Simple White Rafts: Doesn't Matter Supports: Yes Resolution: .2mm Infill: 100% Notes: Depending on how your slicer and printer generates support materiel, you might want pay attention to the direction of hole the support material is oriented inside the case. This will make for easier removal. Post-Printing If you are removing the battery from your Pocketchip be very careful. Make sure you unplug it first. When pulling it off the insanely sticky tape take it slow, pulling evenly from the whole battery. Do not bend the battery, and if you use something for leverage make sure you do not pierce or dent the battery. Also pay close attention to your screens ribbon cable and the surrounding components. Although it is tough to remove it can be done with patience and a strong gentle touch. If you do not know much about lithium batteries I suggest finding some videos on Youtube just so you know what you're dealing with. Make sure you wear safely glasses, and don't punch yourself in the face!