is there any fuel gauge available for upto 110 AH Lead acid batteries,i want to use this gauge with my inverter.
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You can use the bq2060A fuel gauge for that value and lead acid. You will have to do some tricks to make it work with that size battery. Search the knowledge DB (FAQ) for
Using the bq2060 or bq2060A in high capacity high current applications.
I think there is also an FAQ on lead acid as well.
Also just FYI, you put this in the chargers section of the forums.
Check out the bq78412 Pb-Acid Battery State-of-Charge Indicator With Run-Time Display
http://focus.ti.com/docs/prod/folders/print/bq78412.html