There are two batteries that are available for us to use for storing the solar energy. These two batteries, the GMET TS116 2014/04/21 as shown in Figure 1, are supposedly identical according to their data sheets. However, we obtained significantly different voltage measurements from each battery. We suspect that one of the batteries are damaged. We tried to hook up the Anada PV60 charge controller to three Solopower SFX1-i70 solar panels to charge the battery that had an unexpectedly low voltage. However, we noticed that the charge controller always indicated that the batteries were "ready", or fully charged. It even indicated the batteries were full when the batteries were not connected.
Figure 1. Battery with the case opened.
The wayside track also had a problem. The wayside on the track did not have fully connected copper railings. The tubings on the track were not connected either. We believe that the track was designed unevenly which caused the tubings to be forcefully bent. This caused the wayside tubes to deform. Since the tubes were deformed and took a lot of force to put them back in place, we decided to remove the sections that were not connected and put new tubings in. In order to put the tubings on the track, we screwed in a wood block to hold together the tubes as shown in Figure 2.
Figure 2. Fixing the tubings on the wayside track
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