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Joined Jul 2012
L8: Grand Teacher
> bubble2 3,920 Posts
966 Reputation
desynergy
01-04-2020 at 11:27 AM.
01-04-2020 at 11:27 AM.
Hmm.. I was about to buy 4 for backups but the ones that came with my kits, including harbor freight's, are 30 amp.
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Joined Nov 2008
L4: Apprentice
> bubble2 416 Posts
26 Reputation
Iteabaggedu
01-04-2020 at 11:29 AM.
01-04-2020 at 11:29 AM.
Amazon has it for the same price!

https://www.amazon.com/dp/B004RCP...pcomp_prc1
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Joined Dec 2004
L6: Expert
> bubble2 1,533 Posts
511 Reputation
Specboy
01-04-2020 at 11:38 AM.
01-04-2020 at 11:38 AM.
Fine is all you have is a single 100w (or 2, 50w) panel tied to a battery. Maybe great for power in a small shed.. but don't plan on adding another panel. Maybe ok for a tow behind 2 person teardrop sleeper too.

Come to think of it, a battery maintainer for off season maintenance of a mower or summer car battery.

~sb
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Joined Oct 2006
L2: Beginner
> bubble2 30 Posts
14 Reputation
funkriders
01-04-2020 at 11:55 AM.
01-04-2020 at 11:55 AM.
This is the regular price on Amazon and amazon has free shipping whereas Walmart does not at this pricepoint.

https://www.amazon.com/Sunforce-6...merReviews
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Joined Aug 2017
L5: Journeyman
> bubble2 823 Posts
47 Reputation
gonzoret
01-04-2020 at 11:57 AM.
01-04-2020 at 11:57 AM.
I bought this Schumacher SP-600 6W from an Amazon deal to set up as a trickle charge for my truck. Will this controller work for that?
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Joined Mar 2017
L2: Beginner
> bubble2 39 Posts
10 Reputation
person438
01-04-2020 at 12:00 PM.
01-04-2020 at 12:00 PM.
Quote from gonzoret :
I bought this Schumacher SP-600 6W from an Amazon deal to set up as a trickle charge for my truck. Will this controller work for that?

No need for a charge controller at 6w for a vehicle battery
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Joined Apr 2013
L3: Novice
> bubble2 122 Posts
29 Reputation
icanseeyourepidermis
01-04-2020 at 01:54 PM.
01-04-2020 at 01:54 PM.
Quote from person438 :
No need for a charge controller at 6w for a vehicle battery
This is incorrect. A small enough panel may not overcharge a large enough truck battery, **but** the sp-600 panel does not include a blocking diode so it would drain the battery at night if connected directly. Charge controllers prevent drain by the panel, and this is the more important reason for the Schumacher manual specifically calling for a controller for maintenance applications.
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Joined Jul 2013
L3: Novice
> bubble2 141 Posts
42 Reputation
NickN7561
01-04-2020 at 03:43 PM.
01-04-2020 at 03:43 PM.
Quote from icanseeyourepidermis :
This is incorrect. A small enough panel may not overcharge a large enough truck battery, **but** the sp-600 panel does not include a blocking diode so it would drain the battery at night if connected directly. Charge controllers prevent drain by the panel, and this is the more important reason for the Schumacher manual specifically calling for a controller for maintenance applications.
Yeah solar panels have a weird side effect of turning into led's if they've got a power source on one end at night. The current goes the other way and leaches from the battery to the panels in the form of light.
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Joined Nov 2018
L3: Novice
> bubble2 113 Posts
54 Reputation
rolyco
01-04-2020 at 06:14 PM.
01-04-2020 at 06:14 PM.
Quote from Specboy :
Fine is all you have is a single 100w (or 2, 50w) panel tied to a battery. Maybe great for power in a small shed.. but don't plan on adding another panel. Maybe ok for a tow behind 2 person teardrop sleeper too.

Come to think of it, a battery maintainer for off season maintenance of a mower or summer car battery.

~sb

I'm looking to potentially add some solar panels to my small shed but have very little knowledge on the topic. Any pointers on "beginner kits" and expected good price points or forums where I can learn more to get started?
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Joined Dec 2004
L6: Expert
> bubble2 1,533 Posts
511 Reputation
Specboy
01-05-2020 at 06:05 AM.
01-05-2020 at 06:05 AM.
Quote from rolyco :
I'm looking to potentially add some solar panels to my small shed but have very little knowledge on the topic. Any pointers on "beginner kits" and expected good price points or forums where I can learn more to get started?

Renogy makes some nice stuff at reasonable prices. Best thing to do is make a list of everything in your shed you want to power and research the wattage of each device. Then add 20% more wattage on top of that and you'll have a good starting point. Read up on the difference between mppt and pwm charge controllers and understand the benefits of panels wired in series, vs panels wired in parallel.

If you are looking to add ac powered devices, you'll want to look into inverters, but for things like lights or fans, I'd look at 12v dc. LED light strips or "pucks" that will last a long time on a single 12v car-size battery are great and can provide even lighting.

Lastly, oversize your charge controller so you can add more panels if needed. I'm piecing together a system for my travel trailer that will support four panels total. Two that will be mounted on the roof and a third folding one I already have that can be moved into the sun if I'm parked in the shade. the 4th is for expansion... maybe a flexible panel on the curved Fame of the trailer at some point...
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Joined Oct 2014
L5: Journeyman
> bubble2 556 Posts
133 Reputation
MagicBurrito
01-05-2020 at 07:03 AM.
01-05-2020 at 07:03 AM.
Quote from funkriders :
This is the regular price on Amazon and amazon has free shipping whereas Walmart does not at this pricepoint.

https://www.amazon.com/Sunforce-6...merReviews
No longer available on Amazon at that price. Showing 30+ $ now
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Joined Sep 2005
L3: Novice
> bubble2 252 Posts
70 Reputation
pucksr
01-05-2020 at 08:02 AM.
01-05-2020 at 08:02 AM.
Quote from NickN7561 :
Yeah solar panels have a weird side effect of turning into led's if they've got a power source on one end at night. The current goes the other way and leaches from the battery to the panels in the form of light.

And LEDs will also work as photodiodes !!
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Joined Dec 2008
L6: Expert
> bubble2 1,307 Posts
457 Reputation
Tweak42
01-05-2020 at 11:18 AM.
01-05-2020 at 11:18 AM.
Quote from rolyco :
I'm looking to potentially add some solar panels to my small shed but have very little knowledge on the topic. Any pointers on "beginner kits" and expected good price points or forums where I can learn more to get started?

Been watching diy solar videos on YouTube by Will Prowse and he recently started a new forum for diy solar. https://diysolarforum.com/
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