A battery box structure includes an enclosure which defines a first receiving groove, a first circuit board, a push button elastically disposed between the enclosure and the first circuit board, and a battery holder. The set of encoded data slices represents data encoded using a dispersed storage error encoding function having a number of encoded data slices in the set of encoded data slices equal to or greater than a decode threshold and the retrieval threshold is equal to or greater than the decode threshold. The system further includes a high speed valve assembly for controlling flow of fuel to the injector and an electronic controller associated with the fuel injector for commanding the valve assembly to deliver fuel to the fuel injector at a commanded flow rate, based upon input from the sensors in the fuel injector. The method also includes determining an appropriate response template from the plurality of response templates based on the input. The processor reads and analyzes the image of the test pattern to accordingly generate a look-up table. The data stream of the packet may be encoded with forward error correction information to detect and correct errors in the data stream.