This means that the battery is discharged down to 10.5 volts over a 20 hour period while the total actual amp-hours that it supplies are measured. Sometimes ratings at the 6 hour rate and 100 hour rate are also given for comparison and for different applications.
Pool meets are usually no more than 4 hours, but beach meets last about 7 hours. It depends how many events are in the meet. And then if it is a really big meet (like a tournament kind of) it can last days. Hope that helps.
The swim distance in most Olympic triathlons is 0.9 miles. For a 70.3 race, it goes up to 1.2 miles. This 0.3 mile difference equates to 528 yards. For those that are concerned about more pool time, no worries because this increase in yardage won't take muchâif anyâincrease in swim training time.