bad bad battery manu [RE-wrenches]

[John Blittersdorf, Cent. VT Solar & Wind]

Kurt,
   I have had a case of bulging positive posts on Trojan L16's installed in 
99.  It was a grid tie system and the batteries all failed after an initial 
cell failure on one of two strings.  Final autopsy on the 8 batteries was 3 ok 
and the rest with one or two cells dead.  It was my first view of the SW4024 
trying in vain to get the voltage up to 24.  Unfortunately I had installed the 
e-meter in a less than ideal location for visibility to the customer so she 
didn't notice the abnormally low system voltage.  I now supply a multimeter with 
every system so I can have customers check for failed cells and throw the grid 
transfer switch and shut down the system if necessary til I can check it out.  
Also I am thinking that some kind of a warning buzzer or light might be in 
order.  Maybe triggered by a spare relay in the SW.  In this case, the customer 
had been adding more than usual amounts of water.  She always checked the 
batteries monthly... more often than necessary, I thought.  

John
CVSolar

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