You want a power source. I can help you with that. Know what I want? I want something to drink! Bring me five Wastewander Water Pouches, and I'll give you the 4711-FTZ.
Now... guess where you can find Wastewander Water Pouches! Why don't you walk up to one of the Wastewander nomads to the east of here and ask them for one. Let me know how that works out for you.
Excellent, the power source is yours. Now, it isn't completely designed for use in a science kit like that, so you'll only have a limited amount of time before all the data you collect will go kablooey!
When you collect everything you need for whatever it is you are doing, bring it to me and I'll shut it down properly. You'll have at most two hours to get what you need to get done, done.
If you don't get it done in time, I can always sell you another power source to try again. You heard me - sell!