Good Day! I bought a 2016 Prius Two Liftback this week! As an Elec Engineer, I'm looking to see what kind of upgrades(underlined)I might be able to do for the car. It seems the THS IV system is used in several vehicles, so I'll be doing some reading around to find out what form factor differences there are between the Prius Prime hardware + PiP gen 1 and other THS IV cars. I assume that the Lexus models or larger cars have stronger MG1/MG2 motors. I also hazard to guess that the Prius Prime has a interesting power flow due to the MG1 and MG2 driving the wheels. Also, the Prius Prime uses a Li-Ion battery pack, rated for 8.8 kW. I guess this battery has a much better power to weight ratio (or power density) than the NiMH battery factory installed. Anyone have any insight into how to get a battery that fits my car and has lower weight and/or more capacity, like a Li-ion? It seems getting more capacity wouldnt really upgrade the miles per gallon at all, only allow me to run for longer on a battery charge (which is charged by the motor to begin with). However, a lighter battery would be marginally better. For now, I love the car!! I've really enjoyed getting 55-65 mpg on regular gas. My old car was a premium gas guzzler, so i paid about $200+ a month for fuel! I like the audio system when my iphone is plugged in playing music off of my stored music, but I'll probably upgrade the system one day to a high quality speaker set and attempt to mod the control panel into the Prius Prime control panel... Definitely getting a max allowable window tint, its about $300 for the best in my area. I'm looking to get a ELM327 wifi device and an app like Torque or similar to view the precise amount of amperage delivered by/to the battery. With that, I'll also want a iPhone holder to be able to see the readout. I've already replaced the vanity and dome interior lights with LEDs. Doing so should help protect the battery from unintentional depletion, and they provide a lot more light. I'm trying to work out how to remove the map light bulbs so I can replace those with some LEDs as well! I'm still trying to find a how-to for the reverse lights, which I've got LED bulbs for but i'm not sure how to proceed with the replacement. I'll probably get the dealer to replace the map lights and reverse lights later, or show me how. Has anyone had any luck figuring out how to plug in the HV battery to a wall outlet if it's low? Even for small amounts of charge, it would be handy to be able to plug in, in case it dies. I haven't spent much time looking at the owners manual, but it appears to be 700 pages of somewhat useful info!