Hopefully this isn't considered a thread hihacking, I'll start a new thread if appropriate...
I have also been thinking about the 12V system of the '08 HCH that I picked up a couple of weeks ago. I have an amateur radio that I plan on installing (http://www.rigpix.com/kenwood/tm732a.htm)
. It draws around 1.5A - 3A while receiving (which is probably 95% of the time), and can draw up to 11A while transmitting (depending on the RF power setting at the time; will probably be in bursts of 30 seconds to 1 minute). In my previous car, I used it with a 35Ah 12V battery that I brought into the house to charge periodically, but I'd really like to not have to do that moving forward.
I guess these are my questions:
1. Will a 3A load 95% of the time (while the car is on) with occasional jumps up to at most 11A for brief periods (30 seconds - 1 minute) be an issue for the HCHII's electrical system? I'll probably wire the radio directly into the 12V battery.
2. Am I better off keeping the 35Ah battery in my trunk? It weighs around 25 pounds.
3. Will the FE trade-off be about the same between using the car's 12V system and using a separate 35Ah battery? I know this is probably a tough question to answer.
[UPDATE: Some of the other threads regarding ham radios answered #4 for me]
4. Not necessarily 12V related, but does anyone know of RFI issues caused by the HCHII's systems? I have heard the Prius II causes some RFI in certain bands. I guess the reverse of this might be an issue too (i.e. the radio causing problems with the HCHII's systems, but I'm not as concerned).
I have really enjoyed reading the threads on this board so far, and have been impressed with the knowledge that is shared by everyone.