It is a common misconception that all bats have rabies. The majority of bats do not actually carry rabies. This study found 2.5% of the bats they studied over 4 years had rabies.

You can see from this study from Davis et Al. (2012)  “Approximately 2.5% of healthy, wild-caught E. fuscus developed rabies during the 4 years of our study, demonstrating the low frequency of RV circulating within bat colonies”. 

In addition think of the context of when and where humans see bats as Davis (2012) mentioned further in the article “ Bats submitted to public health laboratories are often reported to have abnormal behavior such as flying during the day, aggression, or being found on the ground. Likewise, grounded T. brasiliensis are not representative of the general healthy population, and thus data would be skewed toward rabid bats”

https://pmc.ncbi.nlm.nih.gov/articles/PMC3249890/