bq34z100 FULLSLEEP Mode questions

Hi

I am planning on using the bq34z100 as a coulomb counter for a 100 Amp Hr primary battery.   The load on the battery has a very large dynamic range, (50uAmps to 5 Amps).  The load spends 99% of the time in the very low current range (< 100uAmps) thus I believe the bq34z100 will spend most of the time in the FULLSLEEP Mode.

While in FULLSLEEP Mode will the bq34z100 continue to accumulate coulombs?

The specifications for the Integrating ADC (Coulomb Counter) in the data sheet for the bq34z100 gives a specification of 0.007 %FSR for the Integral Nonlinearlity Error.  Does that mean that the error for very small discharge currents (100uAmps) will be much larger than the actual discharge current?

Thanks

jib