No you are not kidding yourself, going completely portable is quite practical and preferable for many of us. This includes starters and fuel pumps. In the case of the pocket ignitors, most will carry two as a matter of SOP. Most pocket ignitors come with a 1300 mah Nicd and you can also get 2600 Nimh cell to put in the replacable types.

Another popular item for ignition with fans of going portable are the portable glow drivers, my older one has a four cell pack internal and provides automatic instant variable current to the plug for clearing floods without destroying the plug.

John