for the load test, do a search for cluster tests - during the test, throw as many load users as possible, the heated seats, heated steeering wheel, A/C or heater - they put more load on the engine and alternator...

if you buy the correct type/size battery, it will have a vent tube already there, there is NO need to puncture any holes... As a matter of fact, do NOT puncture holes in the battery that is not designed for a hole, you may have some serious problems, ranging from health issues to car problems...