BAC Forum

General Boards => Technical Support => Topic started by: jeffprupis on June 06, 2018, 02:54:04 AM

Title: Chassis Battery at 11.5V
Post by: jeffprupis on June 06, 2018, 02:54:04 AM

Just identified this problem. While driving Inverter on drawing 20-40amps. Chassis batteries charging at only 11.5-8 volts. Turn on the geneset (while driving) house batteries charge at 10-12 amps. Chassis batteries charge at 12.2-6 volts. Coach seems to start fine after being hooked up to shore power. Am I looking at a chassis battery issue, alternator or something else? Thoughts please.

Title: Re: Chassis Battery at 11.5V
Post by: Gerald Farris on June 06, 2018, 04:42:03 AM

Jeff,
The first thing that I would do is check the engine alternator output. It sounds like you have a defective alternator. Also, from your description, it sounds like your inverter is set at a very reduced charging rate.

Gerald