A bit of a brain teaser for those of us who are less informed, so experts please allow time for others to work it out.
Yesterday morning I found my packing shed system shut down, OK not unusual we had strong over night winds probably the volts were too high (no controls on this system), so I changed over inverters as the standby has greater voltage tolerances, all came good, measured the battery voltage and ops its down to 21volts. (24v system)
So I went next door to see the batteries and placed the digital meter across each of the 2V cells in the first of three parallel strings, until I come to one that has a negative 2.1v reading.
Question is how is this so?
Pics to follow tomorrow.
allan