Originally Posted by OldCoot
My monitor shows E, 1/3,2/3 & Full
Yea, but look at where the sensors are installed.
E - means there is more than 6 volts available to the display panel or the ground wire is broken
1/3 - means "not empty"
2/3 - means about 1/2 full
F - means about 7/8 full or "time to dump" or you might get a surprise in a little while.
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