Another battery drain question

MURPHY55347 wrote:
I have a new Sunseeker 2800 GTS that appears to have a battery drain. Charged battery for several days then measured after resting for a day and it reads 12.7 volts. After 2 weeks it is down to 12.3. I believe it has a Xantrex 3 stage charger. Battery disconnect switch is off. I have read all the info about parasitic drains and other possible causes but if this switch is off doesn't that mean everything should be off. My last motorhome when the switch was off I could leave it for months and the batteries held their charge. This is what confuses me about this one. It goes in for some other warranty issues in a couple of weeks but I wanted to ask you all if this seems normal or if I am missing something obvious.

Is this your chassis battery or house battery? Disconnect neg cable set your MM to 10 amps, put your leads between neg cable and neg post,and see what your parasitic amp draw is. Several amps could draw your battery down. .5 amps or less would be normal.