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18Instructables295,811Views27CommentsJoined February 25th, 2009

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  • adaviel's instructable Multi-Input Electric Vehicle Charging Station's weekly stats: 1 month ago
    • Multi-Input Electric Vehicle Charging Station
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  • Lightweight solar panel (12V battery charger)

    Re. fibreglass, I don't know. I assume any other insulating material would work. I used GRP because I'm familiar with it. I understand about VOCs; one epoxy paint gave me a blinding headache so I made a positive-pressure respirator.The issue with the cells is minimum bending radius. All you need to do is mount them on a light stiff board (hence the honeycomb) and cover with a transparent waterproof material. It may be that acrylic would work, sealed with silicone sealant and secured with bolts. My solar kits suggest glass panels, which for me was too heavy and too fragile.I have since seen commercial panels for RVs becoming lighter and cheaper. Considering the work that is required for home assembly, I might just consider buying those for my sailboat project (still on hold).

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  • adaviel's instructable Cargo Cover for Nissan Leaf's weekly stats: 2 months ago
    • Cargo Cover for Nissan Leaf
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  • Lightweight Solar Panel (12V Battery Charger)

    Good guestions. I think I used 2 layers of 4oz E-glass cloth from my local goindustrial store for the panel, then 1 layer of 2.5oz cloth to cover the PV cells. I'm not 100% sure.I'm not sure about the light absorbtion. There is about a 200% variation in open-voltage output of the cells I bought, so to get a good answer I'd have to carefully characterize a particular cell then measure it again after encapsulation. I did some crude measurements like that but forget the answer, beyond "it worked". The potting resin is completely transparent to visible light, and I don't think that well-wetted glass absorbs much light. I'd assume it would be at least as good as the epoxy some commercial panel manufacturers use. Years ago I made a motorcycle headlight lens with glass mat, which was...see more »Good guestions. I think I used 2 layers of 4oz E-glass cloth from my local goindustrial store for the panel, then 1 layer of 2.5oz cloth to cover the PV cells. I'm not 100% sure.I'm not sure about the light absorbtion. There is about a 200% variation in open-voltage output of the cells I bought, so to get a good answer I'd have to carefully characterize a particular cell then measure it again after encapsulation. I did some crude measurements like that but forget the answer, beyond "it worked". The potting resin is completely transparent to visible light, and I don't think that well-wetted glass absorbs much light. I'd assume it would be at least as good as the epoxy some commercial panel manufacturers use. Years ago I made a motorcycle headlight lens with glass mat, which was good enough not to get me pulled over, and the thinner cloth is better than that.

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