Do I need a solar controller?

Oct 28, 2020
8
6
Funster No
77,279
MH
Don't own one yet
Exp
Since 2007
I've recently purchased a small 10 watt solar panel .
The box says I can connect directly to my leisure battery to enable trickle charging whilst the van is in storage ( no mains available).
But do I need a controller?
I've searched online but seem to be getting conflicting information.
Any information would be appreciated 🙂
 
Jan 19, 2014
6,466
15,772
Derbyshire
Funster No
29,757
MH
Elddis Accordo 105
Exp
since 2014
You're supposed to be ok up to about 15w but my 5w panel on the car sends the voltage up to 15+ on consecutive sunny days. And that's with the panel in the windscreen which significantly reduces output.

Fit a little ÂŁ20 Bluetooth monitor and keep an eye on it. The thing with small panels + controller is if you're not careful the controller can use more power than the panel makes.

Amazon product
 
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