\subsection{Battery\_test} \screenshot{plugins/images/ss-battery_test-\genericimg.png}{Battery Test}% {img:batterytest} This plugin simulates normal power drain by spinning up the disk and reading a big file once every 90 seconds (or thereabouts). Each spin up also writes the battery level to a log file. The test stops when battery level reaches 4\% in order to avoid being unable to write to the disk. The power usage data is saved to a file in the root directory of the Jukebox. This plugin can sometimes be useful for diagnosing problems with battery charging.