Solar panels

[Guest]

Hi, I have a '80 Cat 30, and am thinking of installing a 50 Watt solar panel to charge two group 24 type batteries. The question is, will I need to have a charge regulator, or can I connect directly. I'm thinking of connecting the unit on a very clear and sunny day, then being there to see the effect on the batteries. I'm open for ideas and suggestions. Thanks, Harry

 

[Jeff Walker]

Rule of Thumb

The general rule is that panels that produce less than 1% to 2% of the battery banks capacity in amp-hours do not require regulation. If you have 200 amp-hours of battery, a 4-amp panel should be OK. I would still consider a regulator with a blocking diode (prevents charge loss through solar panel) in case you add another panel someday. Hope this helps.Jeff s/v Suzanne