module replacement

HI Prius Community,

I wanted to ask what is the difference between load testing with a bulb versus discharging?

and what tool to use for discharging? same imax b6 v2?

I am load testing with the H1 headlight 37Watt bulb. Is that low? But could not find any bad module. Is it possible all the modules are good, but then how do I have a leak then?

Please please I need answers for each

I will be pleased if someone can help me if I reach to them during the process.