I am interested in a circuit that can harvest solar energy and charge into a battery, and also provide information about the remaining capacity of the battery. The expected load is in the 5-20mW range, so it is relatively low-power (but beyond the capabilities of the cymbet cbc915).
The bq25504 looks like the right chip for harvesting and managing the battery; is there a recommended fuel gauge monitor that would work well with this chip? I am not a power engineer, so any tips on interfacing the two would be appreciated.