make printing technology an interminably promising approach for functional materials assembly and device fabrication, including but not limited to displays, [4-5] transistors, [6-7] energy storage, [8-10] and biological devices. [11-12] Additive manufacturing builds 3D objects via layer-by-layer adding of materials directly from computer designed models, thus this technology is also known as 3D printing. [13] Extrusion-based 3D printing is a process that involves the pressurized ink delivery through a designed nozzle. It is becoming a new type of manufacturing technology that can be used to build 3D structures from micro to macrometer scale. [14] This makes extrusion printing highly useful in energy device, as it provides opportunity to accurately control the spatial geometry of electrode configurations for enhanced energy densities. [15] Indeed inkjet and extrusion printing are currently becoming standard fabrication tools in many fields, [16] but in this progress report, we will focus on their application in electrochemical energy storage. The coarse printing resolution (around 30 µm) sets a restriction that makes it obviously not suitable for micro electronic devices, but it is sufficient for planar energy devices, e.g., microbatteries, microsupercapacitors, and electrochromics. Generally, the printing resolution is determined by jetted ink droplet rheology property, substrate wettability, and printer quality. Even with resolution limitations, inkjet and extrusion printing provide a convenient and low-cost manufacture approach, and these technologies will continue to advance with the assistance of mature ink formulation and high-resolution printer improvement. In the following, a brief overview of inkjet and extrusion printing technologies will be presented, from apparatus to ink formulation. We will discuss the strategies for successful uniform high-resolution printing. For the application part, our focus will be put on advanced energy storage devices, ranging from batteries and supercapacitors to energy storage electrochromics. Finally, conclusions and outlook to future trends of printed energy storage devices are provided at the end. 2. Inkjet and Extrusion Printing Technologies 2.1. Inkjet Principles There are two droplet generation mechanisms by inkjet printers, which are generically known as continuous inkjet Inkjet and extrusion printing are widely employed technologies in the field of printed electronics. They provide opportunity of manufacturing diverse electronic devices on various types of substrates by employing digital layouts under ambient conditions. In this short review, fundamentals about inkjet mechanisms and ink fluidic characteristics are presented. The interaction between individual droplets and that of droplets with substrates, which are pivotal to the printing resolution and uniformity, are analyzed. In addition, some issues on droplet-based extrusion 3D printing are discussed as an extension of conventional inkjet printing. The recent progress in application of inkjet and extrusion prin...