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.
Now, if you multiply the amp-hr rating by the voltage rating of the battery, you get watt-hours, which is a true measure of the total energy capacity of the battery, and which, in my opinion, all batteries should be measured by.or example, a 1-amp-hr battery can supply 1 amp for 1 hour or 1/10th of an amp for 10 hours or 10 amps for 6 minutes (tho in this last case it may get pretty hot and perhaps fail under such a heavy load).