Good Sam Club Open Roads Forum: Tech Issues: Solar Panel question??????
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Solar Panel question??????

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
joelyn

Az

Senior Member

Joined: 10/26/2002

View Profile



Good Sam RV Club Member

Offline
Posted: 09/12/21 06:31pm Link  |  Quote  |  Print  |  Notify Moderator

have a golf cart that we use at the parks. its a 36 volt cart with 6 6 volt batteries. Anyone know if there is a solar panel that can be mounted on the roof of the cart to keep the batteries charged??? live in Az. so sun is no problem. if so what size or kind of solar panel would i need??? never dealt with solar. THANKS FOR ANY INPUT...





pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 09/12/21 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

Hi Joelyn,

I'd suggest two "12 volt" panels in series.

If you just want maintenance between golfing trips, it may be possible to just direct connect them to the batteries. What size in amp-hours is each of the six volt batteries?

If you want more rapid recharging, then two 60 watt panels in series and a charge controller meant for 36 volts would be needed.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

KD4UPL

Swoope, VA

Senior Member

Joined: 03/16/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 09/12/21 07:08pm Link  |  Quote  |  Print  |  Notify Moderator

It will be difficult if not impossible to find a single solar panel that can charge a 36 volt battery bank. Fully charged that bank will need about 44 volts. You could use two 60 cell solar panels in series, these are about 40" by 66" in size. Or, you could use 3 "12 volt" panels in series, these are usually more like 24" by 54" in size.
You will need a charge controller that will handle 36 volts. These are rare but he Outback FM60 and FM80 can both be programmed for that voltage. I'm not aware of any other models but there may be some.
60 cell panels can be found for around $150 each. An FM60 is about $400.

FWC

The Wilderness

Senior Member

Joined: 09/12/2020

View Profile



Posted: 09/12/21 08:01pm Link  |  Quote  |  Print  |  Notify Moderator

The Victron MPPT 100/20 48V model will work with 36V battery banks. You will need solar panels with an open circuit voltage near greater than 45V or so, so three '12V' panels in series or two '24V'panels in series.

msmith1.wa

Tacoma, WA

Full Member

Joined: 05/10/2014

View Profile


Offline
Posted: 09/12/21 09:49pm Link  |  Quote  |  Print  |  Notify Moderator

Although they are out of business, if you could find a panel or two made by Stion. Depending on the wattage of the panel the VOC is 77v to 80v.


2003 Silverado 2500HD 4x4 8.1l
2016 Evergreen Amped 28FS

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 09/12/21 10:19pm Link  |  Quote  |  Print  |  Notify Moderator

charge-controller-12v-24v-36v-48v-auto


https://www.pvace.com/products/60a-mppt-........r-sealed-gel-agm-flooded-lithium-battery

BFL13

Victoria, BC

Senior Member

Joined: 02/15/2006

View Profile



Posted: 09/13/21 08:32pm Link  |  Quote  |  Print  |  Notify Moderator

You can do one pair of 6s at a time with a 12v charger or solar controller Just have battery clamps on the charger's output wires and shift along to the next pair

Did that with a 36v cart (6-sixes) that had a broken 36v charger.

Not as handy to get them all done, but perhaps a lot easier than doing all six at once considering the solar equipment required at 12v vs 36v.


1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

joelyn

Az

Senior Member

Joined: 10/26/2002

View Profile



Good Sam RV Club Member

Offline
Posted: 09/13/21 10:16pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the suggestions and ideas, but it seems way above my expertise as well as my pocketbook. guess just stay with the ole charger method.. but again thank u all for ur responses...

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 09/13/21 10:33pm Link  |  Quote  |  Print  |  Notify Moderator

joelyn,

Did you simply want to maintain and slowly recharge the battery bank?

LLOPR

NY

New Member

Joined: 09/14/2021

View Profile


Offline
Posted: 09/20/21 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

I'd suggest two "12 volt" panels in series. Fox example Renogy 200 Watt - https://solwiser.com/am-solar-panel-reviews/

"12 volt" panels in series, these are usually more like 24" by 54" in size.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Tech Issues

 > Solar Panel question??????
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.