L-16s like higher voltages [RE-wrenches]

[Windy Dankoff, Dankoff Solar]

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>2.) Check each cell to make sure they are relatively equal (within .010 on a
>hydrometer, or .05 on a voltmeter).
>
>Re-reading my post I see that I forgot to say how often to check for unequal
>cells. I recommend once per month during cloudy periods on most PV systems
>and once every two or three months during sunny times when the batteries are
>fully charged a few times per week on average.
>Dave


To make it easiest, keep a chart or mark the cells that tend to be 
low. Normally, it will always be the same one(s). For frequent tests, 
like every month or three, just check just one generally-low cell 
against a generally high one.

Be warned with hydrometer that as full charge approaches, the 
readings tend to lag behind, then pop up rather suddenly and not, of 
course, at the same time. This is because the electrolyte is heavier 
down in the plates than up on top, until it finally mixes. That leads 
to far-exaggerated differences between cell s.g.

Don't forget to drip some acid on your jeans.

Windy

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