[RedDevil]

The G1 pack has a higher voltage and yours is a manual, which gives you more control over charge and discharge of the pack - which may work for the good, but also allows you to damage it!

I know of no G1 parallel pack built like mine, I would have devoured such a thread if I knew of it.

I expect that I'll use about 1 kWh per commute and save half a liter of fuel with it.
At current electricity and fuel costs I need almost 3000 of those to break even.

I theorized that feeding the system makes it a better hybrid; theoretically it could achieve better economy with augmented hybrid use than it would if I use EV mode until it peters out (if that were possible whit the Insight) and then resume normal hybrid mode with the charge/discharge hysteresis losses. In that case the gain will be bigger.

It will definitely be more fun to drive. The way the Insight got off the line this morning with its fuller than usual IMA battery was encouraging.