Battery Tender Question from a Newbie

[Bren10]

Hello All,
I am a newbie to RVing, so I hope I've posted it in the right place. I have had the privilege of chatting with a very nice member who has answered several questions for me, and helped me get my 1995 Coachmen Santara Winterized behind the scenes, but this is my 1st of what I'm sure will be many posts.

My question is about hooking up my Battery Tender. I bought a 4 bank Battery Tender brand charger thinking I could hook up my 3 batteries to 1 charger, plug it in, and the batteries would be fully charged come Spring. But after reading several of the posts I'm not sure that is correct. As I am disabled I will not be removing the batteries from my MH, and plan to hook the tender to it while connected to the MH.

My question is: Do I need to hook up 3 banks, 1 to each of the 3 batteries, or just 2 banks-1 to charge the 2 Chassis batteries in the series, and 1 for the house battery? (Also how can I tell which batteries are which?)

I just don't want to overcharge the batteries, and from what I read on here the 2 Chassis Batteries will actually charge simultaneously. My MH has a battery disconnect that was put on it so that will be in the off position while charging the batteries. Also do I need to unhook any of the battery cables when charging the batteries, or is it alright to leave it hooked up?

Thank you. Any help is appreciated.

[Cat320]

Be careful if you buy a "battery tender." Some of them will keep a fully charged battery or bank of batteries charged, but will NOT charge a battery or bank of batteries if not fully charged already.

[Bren10]

Thank you I'll be sure and keep a close eye on it the battery should be fully charged I've been keeping it started since the cold hit, so hopefully it will be alright.