last week the featherlite (fthr “Official Coach” of NASCAR)  manager arranged a call from the engineer who designed the equalizer/battery monitor. i got the call and was at the coach about 15 min from my home and was able to describe to the engineer on the phone where the current sensors were in the bus bar area. the engineer confirmed that they were probably in the wrong place and said that he would relate that to the manager. he also referred me to page 5 of the vanner battery equalizer manual under “theory of operation” where a diagram which shows the proper placement of the current sensors. http://featherlitecoach.org/vanner_manual_Battery_Equalizer_80.pdf
(page 5)
after reading the copy below the diagram a very helpful local mechanic noticed that the equalizers themselves charge the batteries according to the information they receive from their sensors. it appears to describes in the manual how overcharging and boiling of the batteries is possible if mis-placement of the sensors leads to erroneous readings and a charge imbalance. to quote:

“In many 24 volt electrical systems it is desirable to tap into the battery system to obtain power for 12 volt loads. This method, while seemingly simple, causes a charge imbalance resulting in Battery B (see diagram) being overcharged, and possibly boiling, while Battery A discharges. ”

more than i wanted to know but now i understand it is possible that the problem that i thought was just a monitor display problem could or may cause battery damage and fumes and/or explosion, a problem their work has caused before (battery boiling and fumes, not explosions / see earlier posts including post 30 “the incredulous customer service rep” April 14) still as of today i have not yet received a call back from the manager at Featherlite Luxury Coach of NASCAR concerning this problem nor have i been offered any solution not to mention compensation for the weeks and hours of work the replacement parts and labor that their work has so far. i am not sure how serious the problem with the charge indicator and placement of the charge sensors but i wish i never had to learn about them and i expected more from  fthr Featherlite Official Coach of NASCAR.