I store my boat in storage lot near my lake without access to electrical. To help the keep the batteries charged, I'm contemplating a solar charger. I'm considering the following two:

http://www.amazon.com/Sunforce-50022.../dp/B0006JO0TC
http://www.amazon.com/Sunforce-50033.../dp/B001RJOP5Y

Does anyone have any experience with either? Or any thoughts about using solar chargers like this in general.


Thanks, Tom