Sunsei Solar

The batteries used for starting engines on power boats and sailboats will self discharge during periods of lay up. This is not only annoying when you want to take out the boat but also permanently damaging to your expensive battery.
A small solar panel can maintain a trickle charge to your battery so that it is instantly ready when you want to go out on your boat. A battery that is maintained like this will have a longer life, lowering your replacement costs. They are an ideal way to maintain the start battery on an infrequently used standby generator.
All panels are designed to use with 12 volt batteries. The SE-150 and SE-500 will not overcharge a battery and do not need a regulator. The SE-1500 is powerful enough to replace the charge used by 12 volt lights etc. and should be used with a regulator such as the MST/SG4.
The SE-150 is designed to mount on the inside of a window or windshield with included suction cups. For this reason it is not weatherproof.
The SE-500 and SE-1500 are weatherproof and designed for outside mounting.