end battery failure? [RE-wrenches]

[Jay Peltz, Peltz Power]

Hi all,

Here is another battery question.

48v battery, L-16's, 2 strings.  Batteries on good system, hydro all winter, good
summer sun, pretty well maintained, desulfaters as well. 2 x 4048 inverters, 15kw
genset.

One both strings, the end batteries failed, while all the interior ones are fine.

One comment ( clue), the owner likes to keep the batteries very high, 60v.  Now
this isn't a problem in the summer, but in hydro weather, this could mean 60v for
days or even weeks at a time.?

Thanks all,

jay

Peltz Power

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