The key is almost finished, but it’s going to need a power source, with both CID and Fun Shaundi coming along to help you. CID doesn’t know the exact locations of the power sources, but only the general area. This mission behaves similarly to earlier ones, where a meter in the top left corner of the screen will fill up as you get closer and closer to the source.
The first source only has some minor resistance, but the second one will have a shield around it, so you’ll have to disable the generator before you can grab it. The third one will have multiple generators, some you need to disable by hand and others you can shoot, as well as more Zin and even a Marauder.
Unfortunately, after disabling the generators to remove the shield, the battery will explode when you grab it. Luckily, though, CID points out that there’s another "final" battery nearby, but it’s heavily fortified. Clear the area of the Zin first, then take out the generators. The battery turns out to be a tank and when you get inside, you will only have three minutes to get it back to Kinzie’s warehouse. There will be plenty of roadblocks, which shouldn’t be a problem for the tank. Once you get it back to the warehouse, the mission will end.