The Astrobotic rover will carry a battery pack (273 Whr) to ensure power during the high-activity landing and also for the brief periods during roving when the solar panels won't be fully oriented toward the Sun. The team is fabricating a battery pack that straps the lithium ion cells to a main I-beam, which connects to the radiator to disperse heat. This image shows the top piece of an aluminum mold for the battery pack over which a carbon-fiber structure will be built up. This image shows the bottom piece of an aluminum mold for the battery pack over which a carbon-fiber structure will be built up, forming a container something like a U clamp to hold the individual small cells together. This image shows some of the carbon fiber strips that will be laid up over the battery molds to create the battery pack structure.