Dougwalkabout's "amorphous (thin film) panels" are also great because of their surface area, so they perform better in cloudy conditions. I'd be careful of saying Blast's batteries were topped-off from a single day's sun from a 30watt panel without knowing the amp-hour capacity of the batteries. Remember we are playing with electrical energy and chemical energy in solar/batter systems.
It's a 20 amp-hour battery which was only 40% discharged (putting out 12.3 V) according to my battery monitor. After one very cloudy day my 30-watt solar panel had brought it back up to 100% charged (12.83 V) according to the same monitor.
My Xantrex Powerpack 400Plus. My battery monitor. My monocrystalline 30-watt solar panel. -Blast
Previous Topic
Index
