If you wanted to get some miles on the engine after the battery is drained, you should be able to force the engine to run continually and get hot by starting the vehicle and opening the hood and let it sit and run for 10-15 minutes. That's supposed to be a safety feature so that someone isn't working underhood and unexpectedly have the engine start. You could then go drive a little more aggressively than normal.
I personally wouldn't worry too much about it. Nearly all modern engines are run in from the factory and the rings on the pistons will already be nearly seated/worn in to match the cylinder walls for best compression and oil control. The main thing a lot of recommended break-in procedures are for driveline components such as bearings, axles, brake pads, conventional transmission clutch packs, to give the computer time to learn adaptive values to control various components, etc. and not necessarily the engine.
There's also varying thoughts as to what's best for the engine. On a conventional powered new car I'd normally drive a little easy with varying rpms and speeds, if possible, for the first few hundred miles. Then start giving it some aggressive full throttle and a lot of rpms.
With the Hybrid it likely wouldn't hurt to drive it at different speeds and give it some easier miles, then don't plug in and let it run on hybrid mode for a gas tank or so. Even if you didn't do that there's likely nothing to worry about.
Eric H. - '19 Pacifica Hybrid Limited - '04 Neon SRT-4 (eBlue/S2)
'92 Dodge Daytona IROC R/T - '91 Dodge Spirit R/T
'07 Ram 1500 - '14 CTS-V Wagon - plus some other stuff
Last edited by blackbird; 12-18-2018 at 08:27 PM.