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Mattdenryter · 03-17-2023, 04:13 PM

Hello everyone,
I have a 2012 fleetwood discovery 40g. I recently found an indoor storage place close to me that I am going to start keeping my motorhome at. Each spot has an electrical outlet however they do not want you plugging the coach in directly. They want you to use a trickle charger connected straight to the batteries. I have six 6 volt batteries that are all connected to each other and 2 12 volt batteries, that are connected. Is it possible to trickle charge these without disconnecting all the batteries, and How would I attach a trickle charger. Thanks

Ray,IN · 03-17-2023, 05:04 PM

So actually you have 5 12V batteries. Connect a trickle charger to the main positive and negative battery cables of the 6 - 6V batteries, then use jumper cables from those main battery cables on the house bank to connect the chassis battery bank.
All those batteries might require at least a total of 3 amps of trickle charge at 13.3-13.6VDC

Your 6, 6V battery house bank( you can visualize it being 3 12V batteries) is similar to this:

Your 2 12V battery chassis bank is similar to this:

153stars · 03-17-2023, 05:29 PM

You may want a dual bank marine charger. The amps are usually split. So 20amp is 2 x 10a. That's a lot of batteries the house bank I would want 6-10 amps. on that. Guest and Pro Mariner seem pretty good.
Noco chargers get good reviews. Woot used to have them cheap ...maybe refurbished when they came out. Wish I bought a few then . Got a 10 A from Santa this year it's hooked up now. My Bluesea MTL-ACR keeps house and chassis combined when needed.

twinboat · 03-17-2023, 07:17 PM

Buy 2 trickle chargers.

1 for the chassis battery, hooking to a positive and the chassis ground.

1 for the house bank, connecting to a positive with multiple cables leaving the batteries and the negetive to the chassis ground cable. Do not connect to a short jumper between batteries.

Now get an extension cord with 2 or more outlets on it, plug both chargers in and your set for the season.

A10 amp charger will only draw 1 amp at 120 volts, so 2 will not overload your storage circuits.