ORIGINAL: microdon2
Aerobar \ Sandy Jain - Sounds like using that diode is a good option if you already have the extra battery and swith \ charging jacks. If not, then the Ibec seems like a good - somewhat cheaper - and lighter alternative to a dedicated ignition battery. Agreed?
Depending on your choices and sources of switches and batteries the price may start be be comparable although I don't see it being cheaper. I make my own packs to get the type and number of wires/connectors I want. It also happens to be cheaper than a commerically finished pack. The price of the Ultra IBEC has dropped quite a bit since I last looked at it. If the Ultra IBEC has features that you value highly then the price may be irrelevant. Even though I look for great values I am far from penny wise and pound foolish. I have spent lavishly on RC stuff when I thought it was worth it. Having been frugal were it makes sense makes the occasional lavish purchase much easier.