Battery or Plug?

Let's say you have to work on a laptop all week. I'm talking you have to use it for your job, it's connected to your house for heat/air/security, you order your groceries on-line, watch all your shows on it, and even use it for an alarm.
Now, knowing all you'll need it for, you can only have one computer. AND... you can choose to power it by battery or plug only.

Which would you choose?

Oh, and here's another thing: In the purchase contract, there is a guarantee there will always be an outlet available to you at all times.

Kinda makes it a no-brainer doesn't it?

Then why, as Christians, do we think we can fill our Jesus battery up on Sunday's with a quick re-charge on Wednesday - if we're running low? We need to remember that we do nothing on our own power and are to live lives completely dependent on the power of Christ.

Christianity: Batteries not included. Plug in.