A turlough is a unique type of seasonal lake found in Irish karst areas which are formed through the annual welling-up of water from the underground water system. Water supplies from wells in karst topography may be unsafe, as the water may have run unimpeded from a sinkhole in a cattle pasture, through a cave and to the well, bypassing the normal filtering that occurs in a porous aquifer.
A battery rated at 180 amp-hours over 6 hours might be rated at 220 AH at the 20-hour rate, and 260 AH at the 48-hour rate. Much of this loss of efficiency is due to higher internal resistance at higher amperage rates-internal resistance is not a constant-kind of like the more you push, the more it pushes back.
I.e. Assuming You have a typical full size auto battery, it is about 50 amp hours. To Calculate how much time Youâll need to charge the battery with a 15 Watt solar charger Youâll need: 1  Calculate the Ampere per hour of the charger: 15 Watts /12 Volts = 1,25 Amperes.2  Calculate the division: 50 amp hours / 1,25 ampers = 40 Hours of direct sunlight.3  Add 10%: 4 hours..e. Assuming You have a typical full size auto battery, it is about 50 amp hours. To Calculate how much time Youâll need to charge the battery with a 15 Watt solar charger Youâll need: 1  Calculate the Ampere per hour of the charger: 15 Watts /12 Volts = 1,25 Amperes.