Hi everyone. I'm curious in getting everyone's feedback on their Suburban furnace's performance. I want to know how low will your battery read and still ignite the furnace? For example, will your battery have enough power reading 1/3 on your panel to turn on the fan and close the sail switch to ignite the burner or will it only complete the cycle at 2/3 full? Please chime in, I am curious how low your battery can be on your personal Roo. I have a 2015 Roo model 21BD. Thanks.