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Crazy Ray

Monroe,La

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Posted: 08/13/21 11:19am Link  |  Quote  |  Print  |  Notify Moderator

NO


RET ARMY 1980,"Tiny" furkid, Class A, 2007 Bounder 35E, Ford V10 w/Steer Safe, 4 6V CROWN,GC235,525W Solar Kyocera, TriStar 45 Controller,Tri-Metric 2020,Yamaha 2400, TOW CRV. Ready Brake. "Living Our Dream" NASCAR #11-18-19-20- LOVE CO,NM,AZ


Boon Docker

Mountain Foothills of Southern Alberta

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Posted: 08/13/21 11:41am Link  |  Quote  |  Print  |  Notify Moderator

Go for the 10 watt unit. Just make sure one of the battery cables is disconnected over the winter.

frankwp

Calgary, AB, Canada

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Posted: 08/13/21 12:13pm Link  |  Quote  |  Print  |  Notify Moderator

I've always disconnected the fully charged battery every fall & left it for the winter. In the spring, the battery isn't noticeably discharged. I just replaced the old battery at 11 years, but even so, it still had some life left in it.


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Boon Docker

Mountain Foothills of Southern Alberta

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Posted: 08/13/21 12:18pm Link  |  Quote  |  Print  |  Notify Moderator

frankwp wrote:

I've always disconnected the fully charged battery every fall & left it for the winter. In the spring, the battery isn't noticeably discharged. I just replaced the old battery at 11 years, but even so, it still had some life left in it.


I do the same. My pair of GC2's discharge less that 10% over the winter.

pianotuna

Regina, SK, Canada

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Posted: 08/13/21 12:26pm Link  |  Quote  |  Print  |  Notify Moderator

fj12ryder,

five watts per 100 amp-hours of storage is the bare minimum. No need for a controller.


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.

RLS7201

Beautyful Downtown Gladstone, MO

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Posted: 08/13/21 02:45pm Link  |  Quote  |  Print  |  Notify Moderator

I have this solar charger on the dash of my Pick Up all winter long while snow birding for 3.5 months. Been using it for about 6 years with no problem.
At first I questioned if 1.5 watts was enough but so far so good.

Richard


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2oldman

NM

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Posted: 08/13/21 03:49pm Link  |  Quote  |  Print  |  Notify Moderator

RLS7201 wrote:

At first I questioned if 1.5 watts was enough but so far so good.
I doubt 0.1 amp for maybe a few hours/day would do much of anything. You may want to check the battery voltage and see if it is actually doing anything.

fj12ryder

Platte City, MO

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Posted: 08/13/21 04:25pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

fj12ryder,

five watts per 100 amp-hours of storage is the bare minimum. No need for a controller.
Thank you for the info.


Howard and Peggy

"Don't Panic"

RLS7201

Beautyful Downtown Gladstone, MO

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Posted: 08/23/21 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

RLS7201 wrote:

At first I questioned if 1.5 watts was enough but so far so good.
I doubt 0.1 amp for maybe a few hours/day would do much of anything. You may want to check the battery voltage and see if it is actually doing anything.


Doubt all you want but it does keep the battery topped off for over 3 months. Before the 1.5 Watt charger, the battery wouldn't start the truck after sitting for over 3 months. Now when we return home the truck starts. Next spring, I will take a voltage reading of the battery.

Richard

fj12ryder

Platte City, MO

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Posted: 08/23/21 05:56pm Link  |  Quote  |  Print  |  Notify Moderator

Well, FWIW, I unearthed the ol' amp meter and checked the lines coming off the battery. With the OEM battery disconnect set to Off, the draw was 0.01 amp. With the OEM battery disconnect set to On, I had 2.2 amps of draw. More than enough to drain the battery fairly quickly I believe.

On our older Fuzion, the battery disconnect only disconnected major things, there was still enough of a draw, I never measured it, that it would drain the battery down in a week or two.

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