Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 10-16-2019, 06:34 PM   #1
Bus Nut
Meathead's Avatar
Join Date: Apr 2018
Location: New Orleans
Posts: 339
Year: 2001
Coachwork: Thomas
Engine: 3126b 210hp
Rated Cap: 48
Battery Charging Question

Hey Yall

My solar is up and running. I bought the 400w kit from Renogy and the inverter too. All is good. I have been plugging straight into the inverter to work on the bus.
I have an intellipower 9100 charger currently plugged into the inverter and Im keeping my start batteries topped off.

I have a go power auto transfer switch to go from inverter to shore power.

I bought a blue seas big knob switch so I can manually switch the charger between start batteries & house batteries. Also has OFF position.
SO....can I charge my house batteries (shore power) while my solar panels are also sending juice to those batteries?

And...on the other side, if I forget to turn the knob to OFF while Im running the bus, I would be double juicing the start batteries.

Is this OK? Do I need something else?
I would never set the knob to both bcuz start batts are flooded and house batts are gel. The literature for the charger says it can tell the difference between battery types.

Intellipower 9100 w charge wizard
Renogy Rover charge controller
(If youre familiar with those)

Thanks, Dave

Meathead is offline   Reply With Quote
Old 10-16-2019, 06:40 PM   #2
Bus Geek
o1marc's Avatar
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,208
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Your panels, unless you turn them off, are always supplying power to the batteries while you are draining them. I don't see a need to charge my start batteries from the solar system, that's the alternators job.
o1marc is online now   Reply With Quote
Old 10-16-2019, 07:40 PM   #3
Bus Crazy
Johnny Mullet's Avatar
Join Date: Oct 2017
Location: Ashtabula, Ohio
Posts: 1,494
Year: 1996
Coachwork: Thomas
Chassis: International
Engine: T444E 7.3L
I have my original bus batteries kept separate from my Renogy 200W system and coach batteries except with a manual switch to connect my batteries. I only use the switch to charge from the alternator when driving if needed so "double juicing" is fine and wont hurt it.
Johnny Mullet is offline   Reply With Quote
Old 10-17-2019, 06:19 AM   #4
Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,398
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
Charging from shore power or alternator while your solar is connected also is fine.
PNW_Steve is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:24 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.